Adding upstream version 86.0.1.upstream/86.0.1upstream

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

63 files changed, 1474 insertions, 0 deletions

diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-0-1.js b/js/src/tests/test262/language/expressions/delete/11.4.1-0-1.js
new file mode 100644
index 0000000000..2abdae51d5
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-0-1.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator as UnaryExpression
+flags: [noStrict]
+---*/
+
+var x = 1;
+var y = 2;
+var z = 3;
+
+assert((!delete x || delete y), '(!delete x || delete y)');
+assert(delete delete z, 'delete delete z');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-2-2.js b/js/src/tests/test262/language/expressions/delete/11.4.1-2-2.js
new file mode 100644
index 0000000000..5fd845828a
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-2-2.js
@@ -0,0 +1,21 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true when deleting returned value from a
+    function
+---*/
+
+var bIsFooCalled = false;
+var foo = function() {
+  bIsFooCalled = true;
+};
+
+var d = delete foo();
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(bIsFooCalled, true, 'bIsFooCalled');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-3-1.js b/js/src/tests/test262/language/expressions/delete/11.4.1-3-1.js
new file mode 100644
index 0000000000..26fd6e8472
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-3-1.js
@@ -0,0 +1,14 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true when deleting an unresolvable
+    reference
+flags: [noStrict]
+---*/
+
+assert.sameValue(delete unresolvable, true, 'delete unresolvable === true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-3-2.js b/js/src/tests/test262/language/expressions/delete/11.4.1-3-2.js
new file mode 100644
index 0000000000..5b104a6308
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-3-2.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.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator throws ReferenceError when deleting an explicitly
+    qualified yet unresolvable reference (base obj undefined)
+---*/
+
+assert.throws(ReferenceError, function() {
+  delete unresolvable.x;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-3-3.js b/js/src/tests/test262/language/expressions/delete/11.4.1-3-3.js
new file mode 100644
index 0000000000..6b1fbba700
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-3-3.js
@@ -0,0 +1,14 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true when deleting an explicitly qualified
+    yet unresolvable reference (property undefined for base obj)
+---*/
+
+var o = {};
+assert.sameValue(delete o.x, true);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-1-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-1-s-strict.js
new file mode 100644
index 0000000000..4bde0ebeee
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-1-s-strict.js
@@ -0,0 +1,23 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    Strict Mode - TypeError is thrown when deleting non-configurable
+    data property
+flags: [onlyStrict]
+---*/
+
+var obj = {};
+Object.defineProperty(obj, 'prop', {
+  value: 'abc',
+  configurable: false,
+});
+assert.throws(TypeError, function() {
+  delete obj.prop;
+});
+assert.sameValue(obj.prop, 'abc', 'obj.prop');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-2-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-2-s-strict.js
new file mode 100644
index 0000000000..e8f9b5724d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-2-s-strict.js
@@ -0,0 +1,25 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    Strict Mode - TypeError is thrown when deleting non-configurable
+    accessor property
+flags: [onlyStrict]
+---*/
+
+var obj = {};
+Object.defineProperty(obj, 'prop', {
+  get: function() {
+    return 'abc';
+  },
+  configurable: false,
+});
+assert.throws(TypeError, function() {
+  delete obj.prop;
+});
+assert.sameValue(obj.prop, 'abc', 'obj.prop');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-3-s.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-3-s.js
new file mode 100644
index 0000000000..5a75ac567b
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-3-s.js
@@ -0,0 +1,24 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    TypeError isn't thrown when deleting configurable data property
+---*/
+
+var obj = {};
+Object.defineProperty(obj, 'prop', {
+  value: 'abc',
+  configurable: true,
+});
+
+delete obj.prop;
+
+assert.sameValue(
+  obj.hasOwnProperty('prop'),
+  false,
+  'obj.hasOwnProperty("prop")'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-4-s.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-4-s.js
new file mode 100644
index 0000000000..6783d5090e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4-a-4-s.js
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    TypeError isn't thrown when deleting configurable accessor property
+---*/
+
+var obj = {};
+Object.defineProperty(obj, 'prop', {
+  get: function() {
+    return 'abc';
+  },
+  configurable: true,
+});
+
+delete obj.prop;
+
+assert.sameValue(
+  obj.hasOwnProperty('prop'),
+  false,
+  'obj.hasOwnProperty("prop")'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-1.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-1.js
new file mode 100644
index 0000000000..856ea0da33
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-1.js
@@ -0,0 +1,27 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true when deleting a configurable data
+    property
+---*/
+
+var o = {};
+
+var desc = {
+  value: 1,
+  configurable: true,
+};
+Object.defineProperty(o, 'foo', desc);
+
+var d = delete o.foo;
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(o.hasOwnProperty('foo'), false, 'o.hasOwnProperty("foo")');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-10.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-10.js
new file mode 100644
index 0000000000..c0738a9755
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-10.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true for property (stringify) defined on
+    built-in object (JSON)
+---*/
+
+var d = delete JSON.stringify;
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(JSON.stringify, undefined, 'JSON.stringify');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-11.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-11.js
new file mode 100644
index 0000000000..420ba93379
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-11.js
@@ -0,0 +1,25 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true on deleting arguments
+    properties(arguments.callee)
+flags: [noStrict]
+---*/
+
+(function() {
+  function foo(a, b) {
+    return delete arguments.callee;
+  }
+  var d = delete arguments.callee;
+
+  assert.sameValue(d, true, 'd');
+  assert.sameValue(arguments.callee, undefined, 'arguments.callee');
+})();
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-12.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-12.js
new file mode 100644
index 0000000000..3f7fc897a1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-12.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns false when deleting a property(length)
+flags: [noStrict]
+---*/
+
+var a = [1, 2, 3];
+a.x = 10;
+var d = delete a.length;
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(a.length, 3, 'a.length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-13.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-13.js
new file mode 100644
index 0000000000..459421fa5f
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-13.js
@@ -0,0 +1,21 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns false when deleting Array object
+flags: [noStrict]
+---*/
+
+var a = [1, 2, 3];
+a.x = 10;
+
+var d = delete a;
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(Array.isArray(a), true, 'Array.isArray(a)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-14.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-14.js
new file mode 100644
index 0000000000..dd3d849168
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-14.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns true when deleting Array elements
+---*/
+
+var a = [1, 2, 3];
+a.x = 10;
+var d = delete a[1];
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(a[1], undefined, 'a[1]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-15.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-15.js
new file mode 100644
index 0000000000..ea2a3e0bd2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-15.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns true when deleting Array expandos
+---*/
+
+var a = [1, 2, 3];
+a.x = 10;
+var d = delete a.x;
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(a.x, undefined, 'a.x');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-16.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-16.js
new file mode 100644
index 0000000000..4d0e7d1ef0
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-16.js
@@ -0,0 +1,18 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns false on deleting arguments object
+flags: [noStrict]
+---*/
+
+(function() {
+  assert.sameValue(delete arguments, false, 'delete arguments');
+  assert.notSameValue(arguments, undefined, 'arguments');
+})();
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-17.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-17.js
new file mode 100644
index 0000000000..d5d9e39ce6
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-17.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns true on deleting a arguments element
+---*/
+
+function foo(a, b) {
+  var d = delete arguments[0];
+  return d === true && arguments[0] === undefined;
+}
+
+assert.sameValue(foo(1, 2), true, 'foo(1,2)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-2.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-2.js
new file mode 100644
index 0000000000..dc375ee9ed
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-2.js
@@ -0,0 +1,32 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns true when deleting a configurable accessor
+    property
+---*/
+
+var o = {};
+
+// define an accessor
+// dummy getter
+var getter = function() {
+  return 1;
+};
+var desc = {
+  get: getter,
+  configurable: true,
+};
+Object.defineProperty(o, 'foo', desc);
+
+var d = delete o.foo;
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(o.hasOwnProperty('foo'), false, 'o.hasOwnProperty("foo")');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3-s-strict.js
new file mode 100644
index 0000000000..8a25d34be6
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3-s-strict.js
@@ -0,0 +1,27 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator throws TypeError when deleting a non-configurable
+    data property in strict mode
+flags: [onlyStrict]
+---*/
+
+var o = {};
+var desc = {
+  value: 1,
+}; // all other attributes default to false
+Object.defineProperty(o, 'foo', desc);
+
+// Now, deleting o.foo should throw TypeError because [[Configurable]] on foo is false.
+assert.throws(TypeError, function() {
+  delete o.foo;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3.js
new file mode 100644
index 0000000000..76eb6c2eb1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-3.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: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a non-configurable
+    data property
+flags: [noStrict]
+---*/
+
+var o = {};
+var desc = {
+  value: 1,
+  configurable: false,
+}; // all other attributes default to false
+Object.defineProperty(o, 'foo', desc);
+
+// Now, deleting o.foo should fail because [[Configurable]] on foo is false.
+var d = delete o.foo;
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(o.hasOwnProperty('foo'), true, 'o.hasOwnProperty("foo")');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-4.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-4.js
new file mode 100644
index 0000000000..425ce3ff35
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-4.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a non-configurable
+    data property (NaN)
+flags: [noStrict]
+---*/
+
+// NaN (15.1.1.1) has [[Configurable]] set to false.
+var d = delete NaN;
+
+assert.sameValue(d, false, 'd');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-5.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-5.js
new file mode 100644
index 0000000000..da68d598ac
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-5.js
@@ -0,0 +1,26 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting the declaration of the environment object
+    inside 'with'
+flags: [noStrict]
+---*/
+
+var o = new Object();
+o.x = 1;
+var d;
+with(o) {
+  d = delete o;
+}
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(typeof o, 'object', 'typeof(o)');
+assert.sameValue(o.x, 1, 'o.x');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-6.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-6.js
new file mode 100644
index 0000000000..cee3aff136
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-6.js
@@ -0,0 +1,23 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns true when deleting a property inside 'with'
+flags: [noStrict]
+---*/
+
+var o = new Object();
+o.x = 1;
+var d;
+with(o) {
+  d = delete x;
+}
+
+assert.sameValue(d, true, 'd');
+assert.sameValue(o.x, undefined, 'o.x');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-7.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-7.js
new file mode 100644
index 0000000000..0507d4019f
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-7.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator inside 'eval'
+flags: [noStrict]
+---*/
+
+var x = 1;
+var d = eval('delete x');
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(x, 1, 'x');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8-s-strict.js
new file mode 100644
index 0000000000..d6150ba9e5
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8-s-strict.js
@@ -0,0 +1,22 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator throws TypeError when deleting a non-configurable
+    data property in strict mode
+flags: [onlyStrict]
+---*/
+
+var global = this;
+// NaN (15.1.1.1) has [[Configurable]] set to false.
+assert.throws(TypeError, function() {
+  delete global.NaN;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8.js
new file mode 100644
index 0000000000..b6638c57f0
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-8.js
@@ -0,0 +1,17 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: delete operator returns true for built-in objects (JSON)
+flags: [noStrict]
+---*/
+
+var d = delete JSON;
+
+assert.sameValue(d, true, 'd');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9-s-strict.js
new file mode 100644
index 0000000000..332c565978
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9-s-strict.js
@@ -0,0 +1,20 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator throws TypeError when deleting a non-configurable
+    data property (Math.LN2) in strict mode
+flags: [onlyStrict]
+---*/
+
+assert.throws(TypeError, function() {
+  delete Math.LN2;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9.js b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9.js
new file mode 100644
index 0000000000..b2472ca17a
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-4.a-9.js
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a non-configurable
+    data property (Math.LN2)
+flags: [noStrict]
+---*/
+
+var d = delete Math.LN2;
+
+assert.sameValue(d, false, 'd');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-5-1.js b/js/src/tests/test262/language/expressions/delete/11.4.1-5-1.js
new file mode 100644
index 0000000000..22b056520c
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-5-1.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a direct reference to
+    a var
+flags: [noStrict]
+---*/
+
+var x = 1;
+
+// Now, deleting 'x' directly should fail;
+var d = delete x;
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(x, 1, 'x');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-5-2.js b/js/src/tests/test262/language/expressions/delete/11.4.1-5-2.js
new file mode 100644
index 0000000000..7f7cb95ad1
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-5-2.js
@@ -0,0 +1,21 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a direct reference to
+    a function argument
+flags: [noStrict]
+---*/
+
+function foo(a, b) {
+  // Now, deleting 'a' directly should fail
+  // because 'a' is direct reference to a function argument;
+  var d = delete a;
+  return d === false && a === 1;
+}
+
+assert(foo(1, 2), 'foo(1,2) !== true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-5-3.js b/js/src/tests/test262/language/expressions/delete/11.4.1-5-3.js
new file mode 100644
index 0000000000..a9353540ca
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-5-3.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator returns false when deleting a direct reference to
+    a function name
+flags: [noStrict]
+---*/
+
+var foo = function() {};
+
+// Now, deleting 'foo' directly should fail;
+var d = delete foo;
+
+assert.sameValue(d, false, 'd');
+assert.sameValue(typeof foo, 'function', 'typeof foo');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-27-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-27-s-strict.js
new file mode 100644
index 0000000000..c32710b2b6
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-27-s-strict.js
@@ -0,0 +1,25 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    Strict Mode - TypeError is thrown after deleting a property,
+    calling preventExtensions, and attempting to reassign the property
+flags: [onlyStrict]
+---*/
+
+var a = {
+  x: 0,
+  get y() {
+    return 0;
+  },
+};
+delete a.x;
+Object.preventExtensions(a);
+assert.throws(TypeError, function() {
+  a.x = 1;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-28-s.js b/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-28-s.js
new file mode 100644
index 0000000000..aa465ea689
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.1-5-a-28-s.js
@@ -0,0 +1,12 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Strict Mode - TypeError is not thrown when deleting RegExp.length
+---*/
+
+var a = new RegExp();
+var b = delete RegExp.length;
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/11.4.4-4.a-3-s-strict.js b/js/src/tests/test262/language/expressions/delete/11.4.4-4.a-3-s-strict.js
new file mode 100644
index 0000000000..8a25d34be6
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/11.4.4-4.a-3-s-strict.js
@@ -0,0 +1,27 @@
+'use strict';
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    This test is actually testing the [[Delete]] internal method (8.12.8). Since the
+    language provides no way to directly exercise [[Delete]], the tests are placed here.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    delete operator throws TypeError when deleting a non-configurable
+    data property in strict mode
+flags: [onlyStrict]
+---*/
+
+var o = {};
+var desc = {
+  value: 1,
+}; // all other attributes default to false
+Object.defineProperty(o, 'foo', desc);
+
+// Now, deleting o.foo should throw TypeError because [[Configurable]] on foo is false.
+assert.throws(TypeError, function() {
+  delete o.foo;
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.1.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.1.js
new file mode 100644
index 0000000000..b2a838d7dc
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.1.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If Type(x) is not Reference, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking primitive value and Object value cases
+---*/
+
+//CHECK#1
+if (delete 1 !== true) {
+  $ERROR('#1: delete 1 === true');
+}
+
+//CHECK#2
+if (delete new Object() !== true) {
+  $ERROR('#2: delete new Object() === true');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T1.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T1.js
new file mode 100644
index 0000000000..692cbcc692
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T1.js
@@ -0,0 +1,16 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If GetBase(x) doesn't have a property GetPropertyName(x), return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking undeclared variable case
+flags: [noStrict]
+---*/
+
+//CHECK#1
+if (delete x !== true) {
+  $ERROR('#1: delete x === true');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T2.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T2.js
new file mode 100644
index 0000000000..7e6b467f69
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If GetBase(x) doesn't have a property GetPropertyName(x), return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking Object object and Function object cases
+---*/
+
+//CHECK#1
+function MyFunction() {}
+var MyObject = new MyFunction();
+if (delete MyObject.prop !== true) {
+  $ERROR(
+    '#1: function MyFunction(){}; var MyObject = new MyFunction(); delete MyObject.prop === true'
+  );
+}
+
+//CHECK#2
+var MyObject = new Object();
+if (delete MyObject.prop !== true) {
+  $ERROR('#2: var MyObject = new Object(); delete MyObject.prop === true');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T3.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T3.js
new file mode 100644
index 0000000000..af5f97e9f9
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A2.2_T3.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If GetBase(x) doesn't have a property GetPropertyName(x), return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking undeclared variable case
+---*/
+
+//CHECK#1
+if (delete this.x !== true) {
+  $ERROR('#1: delete this.x === true');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.1.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.1.js
new file mode 100644
index 0000000000..2e4089c940
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.1.js
@@ -0,0 +1,37 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property has the DontDelete attribute, return false
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+var x = 1;
+if (delete x !== false) {
+  $ERROR('#1: var x = 1; delete x === false');
+}
+
+//CHECK#2
+var y = 1;
+if (delete this.y !== false) {
+  $ERROR('#2: var y = 1; delete this.y === false');
+}
+
+//CHECK#3
+function MyFunction() {}
+if (delete MyFunction !== false) {
+  $ERROR('#3: function MyFunction(){}; delete MyFunction === false');
+}
+
+//CHECK#4
+var MyObject = new MyFunction();
+if (delete MyObject !== false) {
+  $ERROR(
+    '#4: function MyFunction(){}; var MyObject = new MyFunction(); delete MyObject === false'
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T1.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T1.js
new file mode 100644
index 0000000000..63458adcd5
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+x = 1;
+if (delete x !== true) {
+  $ERROR('#1: x = 1; delete x === true');
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T2.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T2.js
new file mode 100644
index 0000000000..cec60b8e64
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T2.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+---*/
+
+//CHECK#1
+function MyFunction() {}
+MyFunction.prop = 1;
+if (delete MyFunction.prop !== true) {
+  $ERROR(
+    '#1: function MyFunction(){}; MyFunction.prop = 1; delete MyFunction.prop === true'
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T3.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T3.js
new file mode 100644
index 0000000000..8bacd19b13
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.2_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+---*/
+
+//CHECK#1
+function MyFunction() {}
+var MyObject = new MyFunction();
+MyObject.prop = 1;
+if (delete MyObject.prop !== true) {
+  $ERROR(
+    '#1: function MyFunction(){}; var MyObject = new MyFunction(); MyFunction.prop = 1; delete MyObject.prop === true'
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T1.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T1.js
new file mode 100644
index 0000000000..08e7b97fe6
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T1.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+try {
+  x = 1;
+  delete x;
+  x;
+  $ERROR('#1: x = 1; delete x; x is not exist');
+} catch (e) {
+  if (e instanceof ReferenceError !== true) {
+    $ERROR('#1: x = 1; delete x; x is not exist');
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T2.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T2.js
new file mode 100644
index 0000000000..3563245ccc
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T2.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+---*/
+
+//CHECK#1
+function MyFunction() {}
+MyFunction.prop = 1;
+delete MyFunction.prop;
+if (MyFunction.prop !== undefined) {
+  $ERROR(
+    '#1: function MyFunction(){}; MyFunction.prop = 1; delete MyFunction.prop; MyFunction.prop === undefined. Actual: ' +
+    MyFunction.prop
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T3.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T3.js
new file mode 100644
index 0000000000..2e5b126069
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+---*/
+
+//CHECK#1
+function MyFunction() {}
+var MyObjectVar = new MyFunction();
+MyObjectVar.prop = 1;
+delete MyObjectVar.prop;
+if (MyObjectVar.prop !== undefined) {
+  $ERROR(
+    '#1: function MyFunction(){}; var MyObjectVar = new MyFunction(); MyFunction.prop = 1; delete MyObjectVar.prop; MyObjectVar.prop === undefined. Actual: ' +
+    MyObjectVar.prop
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T4.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T4.js
new file mode 100644
index 0000000000..7ee571725e
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T4.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+function MyFunction() {}
+var MyObjectVar = new MyFunction();
+if (delete MyObjectVar !== false) {
+  $ERROR(
+    '#1: function MyFunction(){}; var MyObjectVar = new MyFunction(); delete MyObjectVar === false'
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T5.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T5.js
new file mode 100644
index 0000000000..0047288f4d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T5.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+function MyFunction() {}
+MyObjectNotVar = new MyFunction();
+MyObjectNotVar.prop = 1;
+delete MyObjectNotVar.prop;
+if (MyObjectNotVar.prop !== undefined) {
+  $ERROR(
+    '#1: function MyFunction(){}; MyObjectNotVar = new MyFunction(); MyFunction.prop = 1; delete MyObjectNotVar.prop; MyObjectNotVar.prop === undefined. Actual: ' +
+    MyObjectNotVar.prop
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T6.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T6.js
new file mode 100644
index 0000000000..d1bdd0287d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A3.3_T6.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: If the property doesn't have the DontDelete attribute, remove the property
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking declared variable
+flags: [noStrict]
+---*/
+
+//CHECK#1
+function MyFunction() {}
+var MyObjectVar = new MyFunction();
+if (delete MyObjectNotVar !== true) {
+  $ERROR(
+    '#1: function MyFunction(){}; var MyObjectNotVar = new MyFunction(); delete MyObjectNotVar === true'
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A4.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A4.js
new file mode 100644
index 0000000000..2573373979
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A4.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    "Delete" operator removes property, which is reference to the object, not
+    the object
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Checking two reference by one object
+flags: [noStrict]
+---*/
+
+//CHECK#1
+var obj = new Object();
+var ref = obj;
+delete ref;
+if (typeof obj !== 'object') {
+  $ERROR(
+    '#1: obj = new Object(); ref = obj; delete ref; typeof obj === "object". Actual: ' +
+    typeof obj
+  );
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S11.4.1_A5-strict.js b/js/src/tests/test262/language/expressions/delete/S11.4.1_A5-strict.js
new file mode 100644
index 0000000000..e332942b23
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S11.4.1_A5-strict.js
@@ -0,0 +1,36 @@
+'use strict';
+// Copyright 2011 Google Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    A strict delete should either succeed, returning true, or it
+    should fail by throwing a TypeError. Under no circumstances
+    should a strict delete return false.
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    See if a strict delete returns false when deleting a  non-standard
+    property.
+flags: [onlyStrict]
+---*/
+
+var reNames = Object.getOwnPropertyNames(RegExp);
+for (var i = 0, len = reNames.length; i < len; i++) {
+  var reName = reNames[i];
+  if (reName !== 'prototype') {
+    var deleted = 'unassigned';
+    try {
+      deleted = delete RegExp[reName];
+    } catch (err) {
+      if (!(err instanceof TypeError)) {
+        $ERROR('#1: strict delete threw a non-TypeError: ' + err);
+      }
+      // fall through
+    }
+    if (deleted === false) {
+      $ERROR('#2: Strict delete returned false');
+    }
+  }
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S8.12.7_A1.js b/js/src/tests/test262/language/expressions/delete/S8.12.7_A1.js
new file mode 100644
index 0000000000..85cf56d7de
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S8.12.7_A1.js
@@ -0,0 +1,29 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When the [[Delete]] method of O is called with property name P,
+    and If the property has the DontDelete attribute, return false
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Try to delete Math.E, that has the DontDelete attribute
+flags: [noStrict]
+---*/
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (delete Math.E !== false) {
+  $ERROR('#1: delete Math.E === false. Actual: ' + delete Math.E);
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if (Math.E === undefined) {
+  $ERROR('#2: delete Math.E; Math.E !== undefined');
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T1.js b/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T1.js
new file mode 100644
index 0000000000..5c782a67cf
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T1.js
@@ -0,0 +1,48 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When the [[Delete]] method of O is called with property name P,
+    and if O doesn't have a property with name P, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Try to delete not existent properties
+---*/
+
+var __color__map = {};
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (delete __color__map.red !== true) {
+  $ERROR(
+    '#1: var __color__map = {}; delete __color__map.red === true. Actual: ' +
+    delete __color__map.red
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if (delete __color__map['green'] !== true) {
+  $ERROR(
+    '#2: var __color__map = {}; delete __color__map["green"] === true. Actual: ' +
+    delete __color__map['green']
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#3
+var blue = 1;
+if (delete __color__map[blue] !== true) {
+  $ERROR(
+    '#3: var __color__map = {}; var blue = 1; delete __color__map[blue] === true. Actual: ' +
+    delete __color__map[blue]
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T2.js b/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T2.js
new file mode 100644
index 0000000000..ead16654ec
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S8.12.7_A2_T2.js
@@ -0,0 +1,54 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When the [[Delete]] method of O is called with property name P,
+    and if O doesn't have a property with name P, return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+    Try to delete not existent properties of O, but existent property
+    of prototype
+---*/
+
+function Palette() {}
+Palette.prototype = {
+  red: 0xff0000,
+  green: 0x00ff00,
+};
+var __palette = new Palette();
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (__palette.red !== 0xff0000) {
+  $ERROR(
+    '#1: function Palette(){}; Palette.prototype = {red:0xFF0000, green:0x00FF00}; __palette = new Palette; __palette.red === 0xFF0000. Actual: ' +
+    __palette.red
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if (delete __palette.red !== true) {
+  $ERROR(
+    '#2 function Palette(){}; Palette.prototype = {red:0xFF0000, green:0x00FF00}; __palette = new Palette; delete __palette.red === true. Actual: ' +
+    delete __palette.red
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#3
+if (__palette.red !== 0xff0000) {
+  $ERROR(
+    '#3: function Palette(){}; Palette.prototype = {red:0xFF0000, green:0x00FF00}; __palette = new Palette; __palette.red === 0xFF0000. Actual: ' +
+    __palette.red
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/S8.12.7_A3.js b/js/src/tests/test262/language/expressions/delete/S8.12.7_A3.js
new file mode 100644
index 0000000000..e672da8fbe
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/S8.12.7_A3.js
@@ -0,0 +1,66 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When the [[Delete]] method of O is called with property name P,
+    removes the property with name P from O and return true
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Delete existent properties
+---*/
+
+var BLUE_NUM = 1;
+var BLUE_STR = '1';
+var YELLOW_NUM = 2;
+var YELLOW_STR = '2';
+var __color__map = {
+  red: 0xff0000,
+  BLUE_NUM: 0x0000ff,
+  green: 0x00ff00,
+  YELLOW_STR: 0xffff00,
+};
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#1
+if (delete __color__map[YELLOW_NUM] !== true) {
+  $ERROR(
+    '#1: var BLUE_NUM=1; var BLUE_STR="1"; var YELLOW_NUM=2; var YELLOW_STR="2"; var __color__map = {red:0xFF0000, BLUE_NUM:0x0000FF, green:0x00FF00, YELLOW_STR:0xFFFF00}; delete __color__map[YELLOW_NUM] === true;'
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#2
+if (__color__map[YELLOW_STR] !== undefined) {
+  $ERROR(
+    '#2: var BLUE_NUM=1; var BLUE_STR="1"; var YELLOW_NUM=2; var YELLOW_STR="2"; var __color__map = {red:0xFF0000, BLUE_NUM:0x0000FF, green:0x00FF00, YELLOW_STR:0xFFFF00}; delete __color__map[YELLOW_NUM]; __color__map[YELLOW_STR] === undefined. Actual: ' +
+    __color__map[YELLOW_STR]
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#3
+if (delete __color__map[BLUE_STR] !== true) {
+  $ERROR(
+    '#3: var BLUE_NUM=1; var BLUE_STR="1"; var YELLOW_NUM=2; var YELLOW_STR="2"; var __color__map = {red:0xFF0000, BLUE_NUM:0x0000FF, green:0x00FF00, YELLOW_STR:0xFFFF00}; delete __color__map[BLUE_STR] === true. Actual: ' +
+    delete __color__map[BLUE_STR]
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+//////////////////////////////////////////////////////////////////////////////
+//CHECK#4
+if (__color__map[BLUE_NUM] !== undefined) {
+  $ERROR(
+    '#4: var BLUE_NUM=1; var BLUE_STR="1"; var YELLOW_NUM=2; var YELLOW_STR="2"; var __color__map = {red:0xFF0000, BLUE_NUM:0x0000FF, green:0x00FF00, YELLOW_STR:0xFFFF00}; delete __color__map[BLUE_STR]; __color__map[BLUE_NUM] === undefined. Actual: ' +
+    __color__map[BLUE_NUM]
+  );
+}
+//
+//////////////////////////////////////////////////////////////////////////////
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/browser.js b/js/src/tests/test262/language/expressions/delete/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/browser.js
diff --git a/js/src/tests/test262/language/expressions/delete/delete-unresolvable-base-object-reference-throws-typeerror.js b/js/src/tests/test262/language/expressions/delete/delete-unresolvable-base-object-reference-throws-typeerror.js
new file mode 100644
index 0000000000..934e59eec9
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/delete-unresolvable-base-object-reference-throws-typeerror.js
@@ -0,0 +1,14 @@
+// Copyright (c) 2020 Rick Waldron.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+  delete operations throws TypeError exception when base object is unresolvable reference.
+---*/
+
+assert.throws(TypeError, () => {
+  delete Object[0][0];
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/identifier-strict-strict.js b/js/src/tests/test262/language/expressions/delete/identifier-strict-strict.js
new file mode 100644
index 0000000000..d84e8a4e59
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/identifier-strict-strict.js
@@ -0,0 +1,19 @@
+// |reftest| error:SyntaxError
+'use strict';
+// Copyright (c) 2018 Mike Pennisi.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-delete-operator-static-semantics-early-errors
+description: Parsing error when operand is an IdentifierReference
+info: |
+  It is a Syntax Error if the UnaryExpression is contained in strict mode code
+  and the derived UnaryExpression is PrimaryExpression:IdentifierReference.
+negative:
+  phase: parse
+  type: SyntaxError
+flags: [onlyStrict]
+---*/
+
+$DONOTEVALUATE();
+
+delete test262identifier;
diff --git a/js/src/tests/test262/language/expressions/delete/non-reference-return-true.js b/js/src/tests/test262/language/expressions/delete/non-reference-return-true.js
new file mode 100644
index 0000000000..85c2e44f68
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/non-reference-return-true.js
@@ -0,0 +1,37 @@
+// Copyright (c) 2018 Leo Balter.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: >
+  The delete expression should return true if the right hand UnaryExpression is not a Reference
+info: |
+  Runtime Semantics: Evaluation
+    UnaryExpression : delete UnaryExpression
+
+    1. Let ref be the result of evaluating UnaryExpression.
+    2. ReturnIfAbrupt(ref).
+    3. If Type(ref) is not Reference, return true.
+---*/
+
+var a = { b: 42 };
+assert.sameValue(delete void a.b, true, 'delete void a.b');
+assert.sameValue(delete void 0, true, 'delete void 0');
+assert.sameValue(delete typeof 0, true, 'delete typeof 0');
+assert.sameValue(delete delete 0, true, 'delete delete 0');
+assert.sameValue(delete void typeof +-~!0, true, 'delete void typeof +-~!0');
+assert.sameValue(delete {x:1}, true, 'delete {x:1}');
+assert.sameValue(delete null, true, 'delete null');
+assert.sameValue(delete true, true, 'delete true');
+assert.sameValue(delete false, true, 'delete false');
+assert.sameValue(delete 0, true, 'delete 0');
+assert.sameValue(delete 1, true, 'delete 1');
+assert.sameValue(delete '', true, 'delete ""');
+assert.sameValue(delete 'Test262', true, 'delete "Test262"');
+assert.sameValue(delete 'Test262'[100], true, 'delete "Test262"[100]');
+assert.sameValue(delete typeof +-~!0, true, 'delete typeof +-~!0');
+assert.sameValue(delete +-~!0, true, 'delete +-~!0');
+assert.sameValue(delete -~!0, true, 'delete -~!0');
+assert.sameValue(delete ~!0, true, 'delete ~!0');
+assert.sameValue(delete !0, true, 'delete !0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/shell.js b/js/src/tests/test262/language/expressions/delete/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/shell.js
diff --git a/js/src/tests/test262/language/expressions/delete/super-property-method.js b/js/src/tests/test262/language/expressions/delete/super-property-method.js
new file mode 100644
index 0000000000..80406af00d
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/super-property-method.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: Attempts to delete super reference property references throws ReferenceError exception
+features: [class]
+---*/
+
+class X {
+  method() {
+    return this;
+  }
+}
+
+class Y extends X {
+  method() {
+    delete super.method;
+  }
+}
+
+const y = new Y();
+
+assert.throws(ReferenceError, () => {
+  y.method();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/super-property.js b/js/src/tests/test262/language/expressions/delete/super-property.js
new file mode 100644
index 0000000000..2e6e6e4857
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/super-property.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-delete-operator-runtime-semantics-evaluation
+description: SuperReferences may not be deleted
+info: |
+  [...]
+  5.If IsPropertyReference(ref) is true, then
+    a. If IsSuperReference(ref) is true, throw a ReferenceError exception.
+features: [class]
+---*/
+
+class C extends Object {
+  constructor() {
+    super();
+    delete super.x;
+  }
+}
+
+assert.throws(ReferenceError, () => {
+  new C();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/language/expressions/delete/white-space-line-terminator-between-delete-unaryexpression-allowed.js b/js/src/tests/test262/language/expressions/delete/white-space-line-terminator-between-delete-unaryexpression-allowed.js
new file mode 100644
index 0000000000..aeed0ffa12
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/delete/white-space-line-terminator-between-delete-unaryexpression-allowed.js
@@ -0,0 +1,51 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-delete-operator
+description: >
+  White Space and Line Terminator between "delete" and UnaryExpression are allowed
+info: |
+  UnaryExpression :
+      delete UnaryExpression
+
+---*/
+
+var result;
+
+result = delete	0;
+assert.sameValue(result, true, '\\u0009');
+
+result = delete0;
+assert.sameValue(result, true, '\\u000B');
+
+result = delete0;
+assert.sameValue(result, true, '\\u000C');
+
+result = delete 0;
+assert.sameValue(result, true, '\\u0020');
+
+result = delete 0;
+assert.sameValue(result, true, '\\u00A0');
+
+// Line Break is intentional
+result = delete
+0;
+assert.sameValue(result, true, '\\u000A');
+
+// Line Break is intentional
+result = delete
+0;
+assert.sameValue(result, true, '\\u000D');
+
+result = delete
0;
+assert.sameValue(result, true, '\\u2028');
+
+result = delete
0;
+assert.sameValue(result, true, '\\u2029');
+
+// Line Break is intentional
+result = delete	  
+

0;
+assert.sameValue(result, true, '\\u0009\\u000B\\u000C\\u0020\\u00A0\\u000A\\u000D\\u2028\\u2029');
+
+reportCompare(0, 0);