Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

54 files changed, 2692 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/array/11.1.4-0.js b/js/src/tests/test262/language/expressions/array/11.1.4-0.js
new file mode 100644
index 0000000000..a8541c380a
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/11.1.4-0.js
@@ -0,0 +1,15 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 11.1.4-0
+description: >
+    elements elided at the end of an array do not contribute to its
+    length
+---*/
+
+  var a = [,];
+
+assert.sameValue(a.length, 1, 'a.length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/11.1.4_4-5-1.js b/js/src/tests/test262/language/expressions/array/11.1.4_4-5-1.js
new file mode 100644
index 0000000000..dbb5ec41e8
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/11.1.4_4-5-1.js
@@ -0,0 +1,28 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Refer 11.1.4; 
+    The production
+    ElementList : Elisionopt AssignmentExpression
+    5.Call the [[DefineOwnProperty]] internal method of array with arguments ToString(firstIndex), the Property Descriptor { [[Value]]: initValue, [[Writable]]: true
+    , [[Enumerable]]: true, [[Configurable]]: true}, and false.
+es5id: 11.1.4_4-5-1
+description: >
+    Initialize array using ElementList (Elisionopt
+    AssignmentExpression) when index property (read-only) exists in
+    Array.prototype (step 5)
+---*/
+
+            Object.defineProperty(Array.prototype, "0", {
+                value: 100,
+                writable: false,
+                configurable: true
+            });
+            var arr = [101];
+
+assert(arr.hasOwnProperty("0"), 'arr.hasOwnProperty("0") !== true');
+assert.sameValue(arr[0], 101, 'arr[0]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/11.1.4_5-6-1.js b/js/src/tests/test262/language/expressions/array/11.1.4_5-6-1.js
new file mode 100644
index 0000000000..c10e03c7e3
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/11.1.4_5-6-1.js
@@ -0,0 +1,28 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Refer 11.1.4; 
+    The production
+    ElementList : ElementList , Elisionopt AssignmentExpression
+    6.Call the [[DefineOwnProperty]] internal method of array with arguments ToString(ToUint32((pad+len)) and the Property Descriptor { [[Value]]: initValue
+    , [[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true}, and false.
+es5id: 11.1.4_5-6-1
+description: >
+    Initialize array using ElementList (ElementList , Elisionopt
+    AssignmentExpression) when index property (read-only) exists in
+    Array.prototype (step 6)
+---*/
+
+            Object.defineProperty(Array.prototype, "1", {
+                value: 100,
+                writable: false,
+                configurable: true
+            });
+            var arr = [101, 12];
+
+assert(arr.hasOwnProperty("1"), 'arr.hasOwnProperty("1") !== true');
+assert.sameValue(arr[1], 12, 'arr[1]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.1.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.1.js
new file mode 100644
index 0000000000..f0d3b83deb
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.1.js
@@ -0,0 +1,34 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: "Evaluate the production ArrayLiteral: [ ]"
+es5id: 11.1.4_A1.1
+description: >
+    Checking various properties of the array defined with expression
+    "var array = []"
+---*/
+
+var array = [];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = []; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = []; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = []; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 0) {
+  throw new Test262Error('#4: var array = []; array.length === 0. Actual: ' + (array.length));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.2.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.2.js
new file mode 100644
index 0000000000..01111b8c26
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.2.js
@@ -0,0 +1,34 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: "Evaluate the production ArrayLiteral: [ Elision ]"
+es5id: 11.1.4_A1.2
+description: >
+    Checking various properties the array defined with "var array =
+    [,,,,,]"
+---*/
+
+var array = [,,,,,];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [,,,,,]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [,,,,,]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [,,,,,]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [,,,,,]; array.length === 5. Actual: ' + (array.length));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.3.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.3.js
new file mode 100644
index 0000000000..158bbcd25d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.3.js
@@ -0,0 +1,59 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: "Evaluate the production ArrayLiteral: [ AssignmentExpression ]"
+es5id: 11.1.4_A1.3
+description: >
+    Checking various properteis and contents of the array defined with
+    "var array = [1,2,3,4,5]"
+---*/
+
+var array = [1,2,3,4,5];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [1,2,3,4,5]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [1,2,3,4,5]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [1,2,3,4,5]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [1,2,3,4,5]; array.length === 5. Actual: ' + (array.length));
+}
+
+//CHECK#5
+if (array[0] !== 1) {
+  throw new Test262Error('#5: var array = [1,2,3,4,5]; array[0] === 1. Actual: ' + (array[0]));
+}
+
+//CHECK#6
+if (array[1] !== 2) {
+  throw new Test262Error('#6: var array = [1,2,3,4,5]; array[1] === 2. Actual: ' + (array[1]));
+}
+
+//CHECK#7
+if (array[2] !== 3) {
+  throw new Test262Error('#7: var array = [1,2,3,4,5]; array[2] === 3. Actual: ' + (array[2]));
+}
+
+//CHECK#8
+if (array[3] !== 4) {
+  throw new Test262Error('#8: var array = [1,2,3,4,5]; array[3] === 4. Actual: ' + (array[3]));
+}
+
+//CHECK#9
+if (array[4] !== 5) {
+  throw new Test262Error('#9: var array = [1,2,3,4,5]; array[4] === 5. Actual: ' + (array[4]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.4.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.4.js
new file mode 100644
index 0000000000..06298f24dd
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.4.js
@@ -0,0 +1,59 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: "Evaluate the production ArrayLiteral: [ Elision, AssignmentExpression ]"
+es5id: 11.1.4_A1.4
+description: >
+    Checking various properteis and content of the array defined with
+    "var array = [,,,1,2]"
+---*/
+
+var array = [,,,1,2];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [,,,1,2]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [,,,1,2]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [,,,1,2]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [,,,1,2]; array.length === 5. Actual: ' + (array.length));
+}
+
+//CHECK#5
+if (array[0] !== undefined) {
+  throw new Test262Error('#5: var array = [,,,1,2]; array[0] === undefined. Actual: ' + (array[0]));
+}
+
+//CHECK#6
+if (array[1] !== undefined) {
+  throw new Test262Error('#6: var array = [,,,1,2]; array[1] === undefined. Actual: ' + (array[1]));
+}
+
+//CHECK#7
+if (array[2] !== undefined) {
+  throw new Test262Error('#7: var array = [,,,1,2]; array[2] === undefined. Actual: ' + (array[2]));
+}
+
+//CHECK#8
+if (array[3] !== 1) {
+  throw new Test262Error('#8: var array = [,,,1,2]; array[3] === 1. Actual: ' + (array[3]));
+}
+
+//CHECK#9
+if (array[4] !== 2) {
+  throw new Test262Error('#9: var array = [,,,1,2]; array[4] === 2. Actual: ' + (array[4]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.5.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.5.js
new file mode 100644
index 0000000000..2909b08365
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.5.js
@@ -0,0 +1,59 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: "Evaluate the production ArrayLiteral: [ AssignmentExpression, Elision ]"
+es5id: 11.1.4_A1.5
+description: >
+    Checking various properteis and contents of the array defined with
+    "var array = [4,5,,,,]"
+---*/
+
+var array = [4,5,,,,];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [4,5,,,,]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [4,5,,,,]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [4,5,,,,]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [4,5,,,,]; array.length === 5. Actual: ' + (array.length));
+}
+
+//CHECK#5
+if (array[0] !== 4) {
+  throw new Test262Error('#5: var array = [4,5,,,,]; array[0] === 4. Actual: ' + (array[0]));
+}
+
+//CHECK#6
+if (array[1] !== 5) {
+  throw new Test262Error('#6: var array = [4,5,,,,]; array[1] === 5. Actual: ' + (array[1]));
+}
+
+//CHECK#7
+if (array[2] !== undefined) {
+  throw new Test262Error('#7: var array = [4,5,,,,]; array[2] === undefined. Actual: ' + (array[2]));
+}
+
+//CHECK#8
+if (array[3] !== undefined) {
+  throw new Test262Error('#8: var array = [4,5,,,,]; array[3] === undefined. Actual: ' + (array[3]));
+}
+
+//CHECK#9
+if (array[4] !== undefined) {
+  throw new Test262Error('#9: var array = [4,5,,,,]; array[4] === undefined. Actual: ' + (array[4]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.6.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.6.js
new file mode 100644
index 0000000000..32be59534d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.6.js
@@ -0,0 +1,61 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Evaluate the production ArrayLiteral: [ Elision, AssignmentExpression,
+    Elision ]
+es5id: 11.1.4_A1.6
+description: >
+    Checking various properteis and contents of the array defined with
+    "var array = [,,3,,,]"
+---*/
+
+var array = [,,3,,,];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [,,3,,,]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [,,3,,,]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [,,3,,,]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [,,3,,,]; array.length === 5. Actual: ' + (array.length));
+}
+
+//CHECK#5
+if (array[0] !== undefined) {
+  throw new Test262Error('#5: var array = [,,3,,,]; array[0] === undefined. Actual: ' + (array[0]));
+}
+
+//CHECK#6
+if (array[1] !== undefined) {
+  throw new Test262Error('#6: var array = [,,3,,,]; array[1] === undefined. Actual: ' + (array[1]));
+}
+
+//CHECK#7
+if (array[2] !== 3) {
+  throw new Test262Error('#7: var array = [,,3,,,]; array[2] === 3. Actual: ' + (array[2]));
+}
+
+//CHECK#8
+if (array[3] !== undefined) {
+  throw new Test262Error('#8: var array = [,,3,,,]; array[3] === undefined. Actual: ' + (array[3]));
+}
+
+//CHECK#9
+if (array[4] !== undefined) {
+  throw new Test262Error('#9: var array = [,,3,,,]; array[4] === undefined. Actual: ' + (array[4]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A1.7.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.7.js
new file mode 100644
index 0000000000..46c51c2d1b
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A1.7.js
@@ -0,0 +1,61 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    Evaluate the production ArrayLiteral: [ AssignmentExpression, Elision,
+    AssignmentExpression ]
+es5id: 11.1.4_A1.7
+description: >
+    Checking various properteis and contents of the array defined with
+    "var array = [1,2,,4,5]"
+---*/
+
+var array = [1,2,,4,5];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [1,2,,4,5]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [1,2,,4,5]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [1,2,,4,5]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 5) {
+  throw new Test262Error('#4: var array = [1,2,,4,5]; array.length === 5. Actual: ' + (array.length));
+}
+
+//CHECK#5
+if (array[0] !== 1) {
+  throw new Test262Error('#5: var array = [1,2,,4,5]; array[0] === 1. Actual: ' + (array[0]));
+}
+
+//CHECK#6
+if (array[1] !== 2) {
+  throw new Test262Error('#6: var array = [1,2,,4,5]; array[1] === 2. Actual: ' + (array[1]));
+}
+
+//CHECK#7
+if (array[2] !== undefined) {
+  throw new Test262Error('#7: var array = [1,2,,4,5]; array[2] === undefined. Actual: ' + (array[2]));
+}
+
+//CHECK#8
+if (array[3] !== 4) {
+  throw new Test262Error('#8: var array = [1,2,,4,5]; array[3] === 4. Actual: ' + (array[3]));
+}
+
+//CHECK#9
+if (array[4] !== 5) {
+  throw new Test262Error('#9: var array = [1,2,,4,5]; array[4] === 5. Actual: ' + (array[4]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/S11.1.4_A2.js b/js/src/tests/test262/language/expressions/array/S11.1.4_A2.js
new file mode 100644
index 0000000000..652f88c69c
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/S11.1.4_A2.js
@@ -0,0 +1,130 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Create multi dimensional array
+es5id: 11.1.4_A2
+description: >
+    Checking various properteis and contents of the arrya defined with
+    "var array = [[1,2], [3], []]"
+---*/
+
+var array = [[1,2], [3], []];
+
+//CHECK#1
+if (typeof array !== "object") {
+  throw new Test262Error('#1: var array = [[1,2], [3], []]; typeof array === "object". Actual: ' + (typeof array));
+}
+
+//CHECK#2
+if (array instanceof Array !== true) {
+  throw new Test262Error('#2: var array = [[1,2], [3], []]; array instanceof Array === true');
+}
+
+//CHECK#3
+if (array.toString !== Array.prototype.toString) {
+  throw new Test262Error('#3: var array = [[1,2], [3], []]; array.toString === Array.prototype.toString. Actual: ' + (array.toString));
+}
+
+//CHECK#4
+if (array.length !== 3) {
+  throw new Test262Error('#4: var array = [[1,2], [3], []]; array.length === 3. Actual: ' + (array.length));
+}
+
+var subarray = array[0];
+
+//CHECK#5
+if (typeof subarray !== "object") {
+  throw new Test262Error('#5: var array = [[1,2], [3], []]; var subarray = array[0]; typeof subarray === "object". Actual: ' + (typeof subarray));
+}
+
+//CHECK#6
+if (subarray instanceof Array !== true) {
+  throw new Test262Error('#6: var array = [[1,2], [3], []]; var subarray = array[0]; subarray instanceof Array === true');
+}
+
+//CHECK#7
+if (subarray.toString !== Array.prototype.toString) {
+  throw new Test262Error('#7: var array = [[1,2], [3], []]; var subarray = array[0]; subarray.toString === Array.prototype.toString. Actual: ' + (subarray.toString));
+}
+
+//CHECK#8
+if (subarray.length !== 2) {
+  throw new Test262Error('#8: var array = [[1,2], [3], []]; var subarray = array[0]; subarray.length === 2. Actual: ' + (subarray.length));
+}
+
+//CHECK#9
+if (subarray[0] !== 1) {
+  throw new Test262Error('#9: var array = [[1,2], [3], []]; var subarray = array[0]; subarray[0] === 1. Actual: ' + (subarray[0]));
+}
+
+//CHECK#10
+if (subarray[1] !== 2) {
+  throw new Test262Error('#10: var array = [[1,2], [3], []]; var subarray = array[1]; subarray[1] === 2. Actual: ' + (subarray[1]));
+}
+
+var subarray = array[1];
+
+//CHECK#11
+if (typeof subarray !== "object") {
+throw new Test262Error('#11: var array = [[1,2], [3], []]; var subarray = array[1]; typeof subarray === "object". Actual: ' + (typeof subarray));
+}
+
+//CHECK#12
+if (subarray instanceof Array !== true) {
+throw new Test262Error('#12: var array = [[1,2], [3], []]; var subarray = array[1]; subarray instanceof Array === true');
+}
+
+//CHECK#13
+if (subarray.toString !== Array.prototype.toString) {
+throw new Test262Error('#13: var array = [[1,2], [3], []]; var subarray = array[1]; subarray.toString === Array.prototype.toString. Actual: ' + (subarray.toString));
+}
+
+//CHECK#14
+if (subarray.length !== 1) {
+throw new Test262Error('#14: var array = [[1,2], [3], []]; var subarray = array[1]; subarray.length === 1. Actual: ' + (subarray.length));
+}
+
+//CHECK#15
+if (subarray[0] !== 3) {
+throw new Test262Error('#15: var array = [[1,2], [3], []]; var subarray = array[1]; subarray[0] === 3. Actual: ' + (subarray[0]));
+}
+
+var subarray = array[2];
+
+//CHECK#16
+if (typeof subarray !== "object") {
+throw new Test262Error('#16: var array = [[1,2], [3], []]; var subarray = array[2]; typeof subarray === "object". Actual: ' + (typeof subarray));
+}
+
+//CHECK#17
+if (subarray instanceof Array !== true) {
+throw new Test262Error('#17: var array = [[1,2], [3], []]; var subarray = array[2]; subarray instanceof Array === true');
+}
+
+//CHECK#18
+if (subarray.toString !== Array.prototype.toString) {
+throw new Test262Error('#18: var array = [[1,2], [3], []]; var subarray = array[2]; subarray.toString === Array.prototype.toString. Actual: ' + (subarray.toString));
+}
+
+//CHECK#19
+if (subarray.length !== 0) {
+throw new Test262Error('#19: var array = [[1,2], [3], []]; var subarray = array[2]; subarray.length === 0. Actual: ' + (subarray.length));
+}
+
+//CHECK#20
+if (array[0][0] !== 1) {
+  throw new Test262Error('#20: var array = [[1,2], [3], []]; array[0][0] === 1. Actual: ' + (array[0][0]));
+}
+
+//CHECK#21
+if (array[0][1] !== 2) {
+  throw new Test262Error('#21: var array = [[1,2], [3], []]; array[0][1] === 2. Actual: ' + (array[0][1]));
+}
+
+//CHECK#22
+if (array[1][0] !== 3) {
+  throw new Test262Error('#722: var array = [[1,2], [3], []]; array[1][0] === 3. Actual: ' + (array[1][0]));
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/browser.js b/js/src/tests/test262/language/expressions/array/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/browser.js
diff --git a/js/src/tests/test262/language/expressions/array/shell.js b/js/src/tests/test262/language/expressions/array/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/shell.js
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-expr-throws.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-expr-throws.js
new file mode 100644
index 0000000000..deaf9c43dc
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-expr-throws.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-expr-throws.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when evaluation throws (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [generators]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+---*/
+
+assert.throws(Test262Error, function() {
+  [0, ...function*() { throw new Test262Error(); }()];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-iter-get-value.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-iter-get-value.js
new file mode 100644
index 0000000000..0867a9fa27
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-iter-get-value.js
@@ -0,0 +1,50 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-iter-get-value.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when GetIterator fails (@@iterator function return value) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    2. Let iterator be ? Call(method, obj).
+    3. If Type(iterator) is not Object, throw a TypeError exception.
+---*/
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    return null;
+  }
+});
+
+assert.throws(TypeError, function() {
+  [0, ...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-call.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-call.js
new file mode 100644
index 0000000000..d8543c3fa2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-call.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-itr-get-call.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when GetIterator fails (@@iterator function invocation) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    3. Let iterator be Call(method,obj).
+    4. ReturnIfAbrupt(iterator).
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+  [0, ...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-get.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-get.js
new file mode 100644
index 0000000000..f80cc68d13
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-get-get.js
@@ -0,0 +1,49 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-itr-get-get.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when GetIterator fails (@@iterator property access) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    1. If method was not passed, then
+       a. Let method be ? GetMethod(obj, @@iterator).
+---*/
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  [0, ...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-step.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-step.js
new file mode 100644
index 0000000000..f55ade0a5e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-step.js
@@ -0,0 +1,58 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-itr-step.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when IteratorStep fails (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.5 IteratorStep ( iterator )
+
+    1. Let result be IteratorNext(iterator).
+    2. ReturnIfAbrupt(result).
+
+    7.4.2 IteratorNext ( iterator, value )
+
+    1. If value was not passed, then
+       a. Let result be Invoke(iterator, "next", « »).
+    [...]
+    3. ReturnIfAbrupt(result).
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      throw new Test262Error();
+    }
+  };
+};
+
+assert.throws(Test262Error, function() {
+  [0, ...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-value.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-value.js
new file mode 100644
index 0000000000..cde32ee06a
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-itr-value.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-itr-value.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when IteratorValue fails (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    7.4.4 IteratorValue ( iterResult )
+
+    1. Assert: Type(iterResult) is Object.
+    2. Return Get(iterResult, "value").
+
+    7.3.1 Get (O, P)
+
+    [...]
+    3. Return O.[[Get]](P, O).
+---*/
+var iter = {};
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+
+assert.throws(Test262Error, function() {
+  [0, ...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-obj-unresolvable.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-obj-unresolvable.js
new file mode 100644
index 0000000000..3111abca28
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-obj-unresolvable.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-obj-unresolvable.case
+// - src/spread/error/array.template
+/*---
+description: Object Spread operator results in error when using an unresolvable reference (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+assert.throws(ReferenceError, function() {
+  [{a: 0, ...unresolvableReference}];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-mult-err-unresolvable.js b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-unresolvable.js
new file mode 100644
index 0000000000..34348cce7d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-mult-err-unresolvable.js
@@ -0,0 +1,44 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-err-unresolvable.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator following other arguments when reference is unresolvable (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+assert.throws(ReferenceError, function() {
+  [0, ...unresolvableReference];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-expr-throws.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-expr-throws.js
new file mode 100644
index 0000000000..99dd2cd60e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-expr-throws.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-expr-throws.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when evaluation throws (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [generators]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+---*/
+
+assert.throws(Test262Error, function() {
+  [...function*() { throw new Test262Error(); }()];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-call.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-call.js
new file mode 100644
index 0000000000..c10deb08ff
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-call.js
@@ -0,0 +1,49 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-itr-get-call.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when GetIterator fails (@@iterator function invocation) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    3. Let iterator be Call(method,obj).
+    4. ReturnIfAbrupt(iterator).
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+  [...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-get.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-get.js
new file mode 100644
index 0000000000..82e463fe16
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-get.js
@@ -0,0 +1,50 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-itr-get-get.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when GetIterator fails (@@iterator property access) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    1. If method was not passed, then
+       a. Let method be ? GetMethod(obj, @@iterator).
+---*/
+var iter = {};
+Object.defineProperty(iter, Symbol.iterator, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  [...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-value.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-value.js
new file mode 100644
index 0000000000..a6933c639b
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-get-value.js
@@ -0,0 +1,49 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-itr-get-value.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when GetIterator fails (@@iterator function return value) (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    7.4.1 GetIterator ( obj, method )
+
+    [...]
+    2. Let iterator be ? Call(method, obj).
+    3. If Type(iterator) is not Object, throw a TypeError exception.
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return null;
+};
+
+assert.throws(TypeError, function() {
+  [...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-step.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-step.js
new file mode 100644
index 0000000000..9f77be3502
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-step.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-itr-step.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when IteratorStep fails (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+
+    7.4.5 IteratorStep ( iterator )
+
+    1. Let result be IteratorNext(iterator).
+    2. ReturnIfAbrupt(result).
+
+    7.4.2 IteratorNext ( iterator, value )
+
+    1. If value was not passed, then
+       a. Let result be Invoke(iterator, "next", « »).
+    [...]
+    3. ReturnIfAbrupt(result).
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      throw new Test262Error();
+    }
+  };
+};
+
+assert.throws(Test262Error, function() {
+  [...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-value.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-value.js
new file mode 100644
index 0000000000..3970e6f59d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-itr-value.js
@@ -0,0 +1,68 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-itr-value.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when IteratorValue fails (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+
+    7.4.4 IteratorValue ( iterResult )
+
+    1. Assert: Type(iterResult) is Object.
+    2. Return Get(iterResult, "value").
+
+    7.3.1 Get (O, P)
+
+    [...]
+    3. Return O.[[Get]](P, O).
+---*/
+var iter = {};
+var poisonedValue = Object.defineProperty({}, 'value', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return poisonedValue;
+    }
+  };
+};
+
+assert.throws(Test262Error, function() {
+  [...iter];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-obj-unresolvable.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-obj-unresolvable.js
new file mode 100644
index 0000000000..d089e0127b
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-obj-unresolvable.js
@@ -0,0 +1,40 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-obj-unresolvable.case
+// - src/spread/error/array.template
+/*---
+description: Object Spread operator results in error when using an unresolvable reference (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+assert.throws(ReferenceError, function() {
+  [{...unresolvableReference}];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-unresolvable.js b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-unresolvable.js
new file mode 100644
index 0000000000..f796a010f5
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-err-sngl-err-unresolvable.js
@@ -0,0 +1,45 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-err-unresolvable.case
+// - src/spread/error/array.template
+/*---
+description: Spread operator applied to the only argument when reference is unresolvable (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+
+    6.2.3.1 GetValue (V)
+
+    1. ReturnIfAbrupt(V).
+    2. If Type(V) is not Reference, return V.
+    3. Let base be GetBase(V).
+    4. If IsUnresolvableReference(V), throw a ReferenceError exception.
+---*/
+
+assert.throws(ReferenceError, function() {
+  [...unresolvableReference];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-empty.js b/js/src/tests/test262/language/expressions/array/spread-mult-empty.js
new file mode 100644
index 0000000000..58bfdf99d1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-empty.js
@@ -0,0 +1,49 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-empty.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator following other arguments when no iteration occurs (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+    5. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return precedingArgs.
+---*/
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 3);
+  assert.sameValue(arguments[0], 1);
+  assert.sameValue(arguments[1], 2);
+  assert.sameValue(arguments[2], 3);
+  callCount += 1;
+}.apply(null, [1, 2, 3, ...[]]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-expr.js b/js/src/tests/test262/language/expressions/array/spread-mult-expr.js
new file mode 100644
index 0000000000..6d6de57fbd
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-expr.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-expr.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to AssignmentExpression following other elements (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+    5. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return precedingArgs.
+---*/
+var source = [3, 4, 5];
+var target;
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 5);
+  assert.sameValue(arguments[0], 1);
+  assert.sameValue(arguments[1], 2);
+  assert.sameValue(arguments[2], 3);
+  assert.sameValue(arguments[3], 4);
+  assert.sameValue(arguments[4], 5);
+  assert.sameValue(target, source);
+  callCount += 1;
+}.apply(null, [1, 2, ...target = source]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-iter.js b/js/src/tests/test262/language/expressions/array/spread-mult-iter.js
new file mode 100644
index 0000000000..58bf244d25
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-iter.js
@@ -0,0 +1,66 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-iter.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator following other arguments with a valid iterator (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+       f. Append nextArg as the last element of list.
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  var nextCount = 3;
+  return {
+    next: function() {
+      nextCount += 1;
+      return { done: nextCount === 6, value: nextCount };
+    }
+  };
+};
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 5);
+  assert.sameValue(arguments[0], 1);
+  assert.sameValue(arguments[1], 2);
+  assert.sameValue(arguments[2], 3);
+  assert.sameValue(arguments[3], 4);
+  assert.sameValue(arguments[4], 5);
+  callCount += 1;
+}.apply(null, [1, 2, 3, ...iter]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-literal.js b/js/src/tests/test262/language/expressions/array/spread-mult-literal.js
new file mode 100644
index 0000000000..99200683ca
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-literal.js
@@ -0,0 +1,51 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-literal.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to AssignmentExpression following other elements (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ArgumentList , ... AssignmentExpression
+
+    1. Let precedingArgs be the result of evaluating ArgumentList.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let iterator be GetIterator(GetValue(spreadRef) ).
+    4. ReturnIfAbrupt(iterator).
+    5. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return precedingArgs.
+---*/
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 5);
+  assert.sameValue(arguments[0], 5);
+  assert.sameValue(arguments[1], 6);
+  assert.sameValue(arguments[2], 7);
+  assert.sameValue(arguments[3], 8);
+  assert.sameValue(arguments[4], 9);
+  callCount += 1;
+}.apply(null, [5, ...[6, 7, 8], 9]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-obj-ident.js b/js/src/tests/test262/language/expressions/array/spread-mult-obj-ident.js
new file mode 100644
index 0000000000..376867e5d4
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-obj-ident.js
@@ -0,0 +1,76 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-obj-ident.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread operator following other properties (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let o = {c: 3, d: 4};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(Object.keys(obj).length, 4);
+
+  verifyProperty(obj, "a", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 1
+  });
+
+  verifyProperty(obj, "b", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 2
+  });
+
+  verifyProperty(obj, "c", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 3
+  });
+
+  verifyProperty(obj, "d", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 4
+  });
+  callCount += 1;
+}.apply(null, [{a: 1, b: 2, ...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-obj-null.js b/js/src/tests/test262/language/expressions/array/spread-mult-obj-null.js
new file mode 100644
index 0000000000..89b71fb411
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-obj-null.js
@@ -0,0 +1,47 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-obj-null.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread operator following other arguments with null value (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 1);
+  assert.sameValue(obj.b, 2);
+  assert.sameValue(Object.keys(obj).length, 2);
+  callCount += 1;
+}.apply(null, [{a: 1, b: 2, ...null}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-mult-obj-undefined.js b/js/src/tests/test262/language/expressions/array/spread-mult-obj-undefined.js
new file mode 100644
index 0000000000..06afb0eb3d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-mult-obj-undefined.js
@@ -0,0 +1,47 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/mult-obj-undefined.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread operator following other arguments with undefined (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 1);
+  assert.sameValue(obj.b, 2);
+  assert.sameValue(Object.keys(obj).length, 2);
+  callCount += 1;
+}.apply(null, [{a: 1, b: 2, ...undefined}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-getter-descriptor.js b/js/src/tests/test262/language/expressions/array/spread-obj-getter-descriptor.js
new file mode 100644
index 0000000000..565807388e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-getter-descriptor.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-getter-descriptor.case
+// - src/spread/default/array.template
+/*---
+description: Spread operation with getter results in data property descriptor (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let o = {
+    get a() {
+        return 42;
+    }
+};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.c, 4);
+  assert.sameValue(obj.d, 5);
+  assert.sameValue(Object.keys(obj).length, 3);
+
+  verifyProperty(obj, "a", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 42
+  });
+  callCount += 1;
+}.apply(null, [{...o, c: 4, d: 5}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-getter-init.js b/js/src/tests/test262/language/expressions/array/spread-obj-getter-init.js
new file mode 100644
index 0000000000..d3d196353e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-getter-init.js
@@ -0,0 +1,41 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-getter-init.case
+// - src/spread/default/array.template
+/*---
+description: Getter in object literal is not evaluated (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+---*/
+
+let o = {a: 2, b: 3};
+let executedGetter = false;
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 2);
+  assert.sameValue(obj.b, 3);
+  assert.sameValue(executedGetter, false)
+  assert.sameValue(Object.keys(obj).length, 3);
+  callCount += 1;
+}.apply(null, [{...o, get c() { executedGetter = true; }}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-manipulate-outter-obj-in-getter.js b/js/src/tests/test262/language/expressions/array/spread-obj-manipulate-outter-obj-in-getter.js
new file mode 100644
index 0000000000..c7e5cdb8df
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-manipulate-outter-obj-in-getter.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-manipulate-outter-obj-in-getter.case
+// - src/spread/default/array.template
+/*---
+description: Getter manipulates outter object before it's spread operation (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+var o = { a: 0, b: 1 };
+var cthulhu = { get x() {
+  delete o.a;
+  o.b = 42;
+  o.c = "ni";
+}};
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.hasOwnProperty("a"), false);
+  assert.sameValue(obj.b, 42);
+  assert.sameValue(obj.c, "ni");
+  assert(obj.hasOwnProperty("x"));
+  assert.sameValue(Object.keys(obj).length, 3);
+  callCount += 1;
+}.apply(null, [{...cthulhu, ...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread-getter.js b/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread-getter.js
new file mode 100644
index 0000000000..717990ed84
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread-getter.js
@@ -0,0 +1,55 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-mult-spread-getter.case
+// - src/spread/default/array.template
+/*---
+description: Multiple Object Spread usage calls getter multiple times (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let getterCallCount = 0;
+let o = {
+    get a() {
+        return ++getterCallCount;
+    }
+};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 2);
+  assert.sameValue(obj.c, 4);
+  assert.sameValue(obj.d, 5);
+  assert.sameValue(Object.keys(obj).length, 3);
+  callCount += 1;
+}.apply(null, [{...o, c: 4, d: 5, a: 42, ...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread.js b/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread.js
new file mode 100644
index 0000000000..fbeace4e76
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-mult-spread.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-mult-spread.case
+// - src/spread/default/array.template
+/*---
+description: Multiple Object Spread operation (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+let o = {a: 2, b: 3};
+let o2 = {c: 4, d: 5};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 2);
+  assert.sameValue(obj.b, 3);
+  assert.sameValue(obj.c, 4);
+  assert.sameValue(obj.d, 5);
+  assert.sameValue(Object.keys(obj).length, 4);
+  callCount += 1;
+}.apply(null, [{...o, ...o2}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-null.js b/js/src/tests/test262/language/expressions/array/spread-obj-null.js
new file mode 100644
index 0000000000..ae106cfd5c
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-null.js
@@ -0,0 +1,45 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-null.case
+// - src/spread/default/array.template
+/*---
+description: Null Object Spread is ignored (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(Object.keys(obj).length, 0);
+  callCount += 1;
+}.apply(null, [{...null}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-override-immutable.js b/js/src/tests/test262/language/expressions/array/spread-obj-override-immutable.js
new file mode 100644
index 0000000000..3a97d624d1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-override-immutable.js
@@ -0,0 +1,54 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-override-immutable.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread overriding immutable properties (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+---*/
+
+let o = {b: 2};
+Object.defineProperty(o, "a", {value: 1, enumerable: true, writable: false, configurable: true});
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 3)
+  assert.sameValue(obj.b, 2);
+
+  verifyProperty(obj, "a", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 3
+  });
+
+  verifyProperty(obj, "b", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 2
+  });
+  callCount += 1;
+}.apply(null, [{...o, a: 3}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-overrides-prev-properties.js b/js/src/tests/test262/language/expressions/array/spread-obj-overrides-prev-properties.js
new file mode 100644
index 0000000000..a7da2822d7
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-overrides-prev-properties.js
@@ -0,0 +1,51 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-overrides-prev-properties.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread properties overrides previous definitions (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let o = {a: 2, b: 3};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 2);
+  assert.sameValue(obj.b, 3);
+  assert.sameValue(Object.keys(obj).length, 2);
+  assert.sameValue(o.a, 2);
+  assert.sameValue(o.b, 3);
+  callCount += 1;
+}.apply(null, [{a: 1, b: 7, ...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-skip-non-enumerable.js b/js/src/tests/test262/language/expressions/array/spread-obj-skip-non-enumerable.js
new file mode 100644
index 0000000000..e064545086
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-skip-non-enumerable.js
@@ -0,0 +1,39 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-skip-non-enumerable.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread doesn't copy non-enumerable properties (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+---*/
+
+let o = {};
+Object.defineProperty(o, "b", {value: 3, enumerable: false});
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.hasOwnProperty("b"), false)
+  assert.sameValue(Object.keys(obj).length, 0);
+  callCount += 1;
+}.apply(null, [{...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-spread-order.js b/js/src/tests/test262/language/expressions/array/spread-obj-spread-order.js
new file mode 100644
index 0000000000..3e15329cfb
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-spread-order.js
@@ -0,0 +1,52 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-spread-order.case
+// - src/spread/default/array.template
+/*---
+description: Spread operation follows [[OwnPropertyKeys]] order (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol, object-spread]
+flags: [generated]
+includes: [compareArray.js]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+var calls = [];
+var o = { get z() { calls.push('z') }, get a() { calls.push('a') } };
+Object.defineProperty(o, 1, { get: () => { calls.push(1) }, enumerable: true });
+Object.defineProperty(o, Symbol('foo'), { get: () => { calls.push("Symbol(foo)") }, enumerable: true });
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.compareArray(calls, [1, 'z', 'a', "Symbol(foo)"]);
+  assert.sameValue(Object.keys(obj).length, 3);
+  callCount += 1;
+}.apply(null, [{...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-symbol-property.js b/js/src/tests/test262/language/expressions/array/spread-obj-symbol-property.js
new file mode 100644
index 0000000000..2d675ed5c3
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-symbol-property.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-symbol-property.case
+// - src/spread/default/array.template
+/*---
+description: Spread operation where source object contains Symbol properties (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol, object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let symbol = Symbol('foo');
+let o = {};
+o[symbol] = 1;
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj[symbol], 1);
+  assert(Object.prototype.hasOwnProperty.call(obj, symbol), "symbol is an own property");
+  assert.sameValue(obj.c, 4);
+  assert.sameValue(obj.d, 5);
+  assert.sameValue(Object.keys(obj).length, 2);
+  callCount += 1;
+}.apply(null, [{...o, c: 4, d: 5}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-undefined.js b/js/src/tests/test262/language/expressions/array/spread-obj-undefined.js
new file mode 100644
index 0000000000..36485e9b93
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-undefined.js
@@ -0,0 +1,45 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-undefined.case
+// - src/spread/default/array.template
+/*---
+description: Undefined Object Spread is ignored (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(Object.keys(obj).length, 0);
+  callCount += 1;
+}.apply(null, [{...undefined}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-obj-with-overrides.js b/js/src/tests/test262/language/expressions/array/spread-obj-with-overrides.js
new file mode 100644
index 0000000000..9ffb6bd799
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-obj-with-overrides.js
@@ -0,0 +1,57 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/obj-with-overrides.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread properties being overriden (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol, object-spread]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let o = {a: 2, b: 3, c: 4, e: undefined, f: null, g: false};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(obj.a, 1);
+  assert.sameValue(obj.b, 7);
+  assert.sameValue(obj.c, 4);
+  assert.sameValue(obj.d, 5);
+  assert(obj.hasOwnProperty("e"));
+  assert.sameValue(obj.f, null);
+  assert.sameValue(obj.g, false);
+  assert.sameValue(obj.h, -0);
+  assert.sameValue(obj.i.toString(), "Symbol(foo)");
+  assert(Object.is(obj.j, o));
+  assert.sameValue(Object.keys(obj).length, 10);
+  callCount += 1;
+}.apply(null, [{...o, a: 1, b: 7, d: 5, h: -0, i: Symbol("foo"), j: o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-sngl-empty.js b/js/src/tests/test262/language/expressions/array/spread-sngl-empty.js
new file mode 100644
index 0000000000..13871d8b11
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-sngl-empty.js
@@ -0,0 +1,48 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-empty.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to the only argument when no iteration occurs (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       [...]
+---*/
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 0);
+  callCount += 1;
+}.apply(null, [...[]]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-sngl-expr.js b/js/src/tests/test262/language/expressions/array/spread-sngl-expr.js
new file mode 100644
index 0000000000..1eda282be1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-sngl-expr.js
@@ -0,0 +1,56 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-expr.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to AssignmentExpression as only element (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+       f. Append nextArg as the last element of list.
+---*/
+var source = [2, 3, 4];
+var target;
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 3);
+  assert.sameValue(arguments[0], 2);
+  assert.sameValue(arguments[1], 3);
+  assert.sameValue(arguments[2], 4);
+  assert.sameValue(target, source);
+  callCount += 1;
+}.apply(null, [...target = source]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-sngl-iter.js b/js/src/tests/test262/language/expressions/array/spread-sngl-iter.js
new file mode 100644
index 0000000000..9a2aa19b94
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-sngl-iter.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-iter.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to the only argument with a valid iterator (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [Symbol.iterator]
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+       f. Append nextArg as the last element of list.
+---*/
+var iter = {};
+iter[Symbol.iterator] = function() {
+  var nextCount = 0;
+  return {
+    next: function() {
+      nextCount += 1;
+      return { done: nextCount === 3, value: nextCount };
+    }
+  };
+};
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 2);
+  assert.sameValue(arguments[0], 1);
+  assert.sameValue(arguments[1], 2);
+  callCount += 1;
+}.apply(null, [...iter]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-sngl-literal.js b/js/src/tests/test262/language/expressions/array/spread-sngl-literal.js
new file mode 100644
index 0000000000..68151e80a4
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-sngl-literal.js
@@ -0,0 +1,53 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-literal.case
+// - src/spread/default/array.template
+/*---
+description: Spread operator applied to array literal as only element (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+flags: [generated]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
+
+    ArgumentList : ... AssignmentExpression
+
+    1. Let list be an empty List.
+    2. Let spreadRef be the result of evaluating AssignmentExpression.
+    3. Let spreadObj be GetValue(spreadRef).
+    4. Let iterator be GetIterator(spreadObj).
+    5. ReturnIfAbrupt(iterator).
+    6. Repeat
+       a. Let next be IteratorStep(iterator).
+       b. ReturnIfAbrupt(next).
+       c. If next is false, return list.
+       d. Let nextArg be IteratorValue(next).
+       e. ReturnIfAbrupt(nextArg).
+       f. Append nextArg as the last element of list.
+---*/
+
+var callCount = 0;
+
+(function() {
+  assert.sameValue(arguments.length, 3);
+  assert.sameValue(arguments[0], 3);
+  assert.sameValue(arguments[1], 4);
+  assert.sameValue(arguments[2], 5);
+  callCount += 1;
+}.apply(null, [...[3, 4, 5]]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/array/spread-sngl-obj-ident.js b/js/src/tests/test262/language/expressions/array/spread-sngl-obj-ident.js
new file mode 100644
index 0000000000..584b6937d4
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/array/spread-sngl-obj-ident.js
@@ -0,0 +1,62 @@
+// This file was procedurally generated from the following sources:
+// - src/spread/sngl-obj-ident.case
+// - src/spread/default/array.template
+/*---
+description: Object Spread operator without other arguments (Array initializer)
+esid: sec-runtime-semantics-arrayaccumulation
+features: [object-spread]
+flags: [generated]
+includes: [propertyHelper.js]
+info: |
+    SpreadElement : ...AssignmentExpression
+
+    1. Let spreadRef be the result of evaluating AssignmentExpression.
+    2. Let spreadObj be ? GetValue(spreadRef).
+    3. Let iterator be ? GetIterator(spreadObj).
+    4. Repeat
+       a. Let next be ? IteratorStep(iterator).
+       b. If next is false, return nextIndex.
+       c. Let nextValue be ? IteratorValue(next).
+       d. Let status be CreateDataProperty(array, ToString(ToUint32(nextIndex)),
+          nextValue).
+       e. Assert: status is true.
+       f. Let nextIndex be nextIndex + 1.
+
+    Pending Runtime Semantics: PropertyDefinitionEvaluation
+
+    PropertyDefinition:...AssignmentExpression
+
+    1. Let exprValue be the result of evaluating AssignmentExpression.
+    2. Let fromValue be GetValue(exprValue).
+    3. ReturnIfAbrupt(fromValue).
+    4. Let excludedNames be a new empty List.
+    5. Return CopyDataProperties(object, fromValue, excludedNames).
+
+---*/
+let o = {c: 3, d: 4};
+
+
+var callCount = 0;
+
+(function(obj) {
+  assert.sameValue(Object.keys(obj).length, 2);
+
+  verifyProperty(obj, "c", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 3
+  });
+
+  verifyProperty(obj, "d", {
+    enumerable: true,
+    writable: true,
+    configurable: true,
+    value: 4
+  });
+  callCount += 1;
+}.apply(null, [{...o}]));
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);