Adding upstream version 124.0.1.upstream/124.0.1

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

15 files changed, 804 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/browser.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/browser.js
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/detached-buffer.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/detached-buffer.js
new file mode 100644
index 0000000000..51b7d60af4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/detached-buffer.js
@@ -0,0 +1,34 @@
+// 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-%typedarray%.prototype.find
+description: Throws a TypeError if this has a detached buffer
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  This function is not generic. ValidateTypedArray is applied to the this value
+  prior to evaluating the algorithm. If its result is an abrupt completion that
+  exception is thrown instead of evaluating the algorithm.
+
+  22.2.3.5.1 Runtime Semantics: ValidateTypedArray ( O )
+
+  ...
+  5. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
+features: [BigInt, TypedArray]
+---*/
+
+var predicate = function() {
+  throw new Test262Error();
+};
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(1);
+  $DETACHBUFFER(sample.buffer);
+  assert.throws(TypeError, function() {
+    sample.find(predicate);
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/get-length-ignores-length-prop.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/get-length-ignores-length-prop.js
new file mode 100644
index 0000000000..05b01d3167
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/get-length-ignores-length-prop.js
@@ -0,0 +1,56 @@
+// 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-%typedarray%.prototype.find
+description: >
+  [[Get]] of "length" uses [[ArrayLength]]
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  2. Let len be ? ToLength(? Get(O, "length")).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+Object.defineProperty(TypedArray.prototype, "length", {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  Object.defineProperty(TA.prototype, "length", {
+    get: function() {
+      throw new Test262Error();
+    }
+  });
+
+  var sample = new TA([42n]);
+
+  Object.defineProperty(sample, "length", {
+    get: function() {
+      throw new Test262Error();
+    },
+    configurable: true
+  });
+
+  assert.sameValue(
+    sample.find(function() { return true; }),
+    42n
+  );
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-changes-value.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-changes-value.js
new file mode 100644
index 0000000000..64667d84a6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-changes-value.js
@@ -0,0 +1,80 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Change values during predicate call
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+  5. Let k be 0.
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+includes: [compareArray.js, testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var arr = [1n, 2n, 3n];
+  var sample;
+  var result;
+
+  sample = new TA(3);
+  sample.find(function(val, i) {
+    sample[i] = arr[i];
+
+    assert.sameValue(val, 0n, "value is not mapped to instance");
+  });
+  assert(compareArray(sample, arr), "values set during each predicate call");
+
+  sample = new TA(arr);
+  result = sample.find(function(val, i) {
+    if ( i === 0 ) {
+      sample[2] = 7n;
+    }
+    return val === 7n;
+  });
+  assert.sameValue(result, 7n, "value found");
+
+  sample = new TA(arr);
+  result = sample.find(function(val, i) {
+    if ( i === 0 ) {
+      sample[2] = 7n;
+    }
+    return val === 3n;
+  });
+  assert.sameValue(result, undefined, "value not found");
+
+  sample = new TA(arr);
+  result = sample.find(function(val, i) {
+    if ( i > 0 ) {
+      sample[0] = 7n;
+    }
+    return val === 7n;
+  });
+  assert.sameValue(result, undefined, "value not found - changed after call");
+
+  sample = new TA(arr);
+  result = sample.find(function() {
+    sample[0] = 7n;
+    return true;
+  });
+  assert.sameValue(result, 1n, "find() returns previous found value");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-parameters.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-parameters.js
new file mode 100644
index 0000000000..ab3bb965ba
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-parameters.js
@@ -0,0 +1,64 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Predicate called as F.call( thisArg, kValue, k, O ) for each array entry.
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+  5. Let k be 0.
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([39n, 2n, 62n]);
+  var results = [];
+  var result;
+
+  sample.foo = "bar"; // Ignores non integer index properties
+
+  sample.find(function() {
+    results.push(arguments);
+  });
+
+  assert.sameValue(results.length, 3, "predicate is called for each index");
+
+  result = results[0];
+  assert.sameValue(result[0], 39n, "results[0][0] === 39, value");
+  assert.sameValue(result[1], 0, "results[0][1] === 0, index");
+  assert.sameValue(result[2], sample, "results[0][2] === sample, instance");
+  assert.sameValue(result.length, 3, "results[0].length === 3 arguments");
+
+  result = results[1];
+  assert.sameValue(result[0], 2n, "results[1][0] === 2, value");
+  assert.sameValue(result[1], 1, "results[1][1] === 1, index");
+  assert.sameValue(result[2], sample, "results[1][2] === sample, instance");
+  assert.sameValue(result.length, 3, "results[1].length === 3 arguments");
+
+  result = results[2];
+  assert.sameValue(result[0], 62n, "results[2][0] === 62, value");
+  assert.sameValue(result[1], 2, "results[2][1] === 2, index");
+  assert.sameValue(result[2], sample, "results[2][2] === sample, instance");
+  assert.sameValue(result.length, 3, "results[2].length === 3 arguments");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-non-strict.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-non-strict.js
new file mode 100644
index 0000000000..cbfc687e78
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-non-strict.js
@@ -0,0 +1,61 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Verify predicate this on non-strict mode
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+flags: [noStrict]
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+var T = this;
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(1);
+  var result;
+
+  sample.find(function() {
+    result = this;
+  });
+
+  assert.sameValue(result, T, "without thisArg, predicate this is the global");
+
+  result = null;
+  sample.find(function() {
+    result = this;
+  }, undefined);
+
+  assert.sameValue(result, T, "predicate this is the global when thisArg is undefined");
+
+  var o = {};
+  result = null;
+  sample.find(function() {
+    result = this;
+  }, o);
+
+  assert.sameValue(result, o, "thisArg becomes the predicate this");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-strict-strict.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-strict-strict.js
new file mode 100644
index 0000000000..9c5c07eba5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-call-this-strict-strict.js
@@ -0,0 +1,56 @@
+'use strict';
+// 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-%typedarray%.prototype.find
+description: >
+  Verify predicate this on strict mode
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+flags: [onlyStrict]
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(1);
+  var result;
+
+  sample.find(function() {
+    result = this;
+  });
+
+  assert.sameValue(
+    result,
+    undefined,
+    "without thisArg, predicate this is undefined"
+  );
+
+  var o = {};
+  sample.find(function() {
+    result = this;
+  }, o);
+
+  assert.sameValue(result, o, "thisArg becomes the predicate this");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-is-not-callable-throws.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-is-not-callable-throws.js
new file mode 100644
index 0000000000..149b44b285
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-is-not-callable-throws.js
@@ -0,0 +1,68 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Throws a TypeError exception if predicate is not callable.
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  3. If IsCallable(predicate) is false, throw a TypeError exception.
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA();
+
+  assert.throws(TypeError, function() {
+    sample.find({});
+  }, "object");
+
+  assert.throws(TypeError, function() {
+    sample.find(null);
+  }, "null");
+
+  assert.throws(TypeError, function() {
+    sample.find(undefined);
+  }, "undefined");
+
+  assert.throws(TypeError, function() {
+    sample.find(false);
+  }, "false");
+
+  assert.throws(TypeError, function() {
+    sample.find(true);
+  }, "true");
+
+  assert.throws(TypeError, function() {
+    sample.find(1);
+  }, "number");
+
+  assert.throws(TypeError, function() {
+    sample.find("");
+  }, "string");
+
+  assert.throws(TypeError, function() {
+    sample.find([]);
+  }, "array");
+
+  assert.throws(TypeError, function() {
+    sample.find(/./);
+  }, "regexp");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-may-detach-buffer.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-may-detach-buffer.js
new file mode 100644
index 0000000000..0cb8181ca1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-may-detach-buffer.js
@@ -0,0 +1,59 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Predicate may detach the buffer
+info: |
+  %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8
+
+  ...
+
+  However, such optimization must not introduce any observable changes in the
+  specified behaviour of the algorithm and must take into account the
+  possibility that calls to predicate may cause the this value to become
+  detached.
+
+
+  Array.prototype.find ( predicate[ , thisArg ] )
+
+    Let O be ? ToObject(this value).
+    Let len be ? LengthOfArrayLike(O).
+    If IsCallable(predicate) is false, throw a TypeError exception.
+    Let k be 0.
+    Repeat, while k < len,
+      Let Pk be ! ToString(𝔽(k)).
+      Let kValue be ? Get(O, Pk).
+      Let testResult be ! ToBoolean(? Call(predicate, thisArg, « kValue, 𝔽(k), O »)).
+      If testResult is true, return kValue.
+      Set k to k + 1.
+    Return undefined.
+
+  IntegerIndexedElementGet ( O, index )
+
+    ...
+    Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
+    If IsDetachedBuffer(buffer) is true, return undefined.
+
+includes: [testBigIntTypedArray.js, detachArrayBuffer.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var loops = 0;
+  var sample = new TA(2);
+
+  sample.find(function() {
+    if (loops === 0) {
+      $DETACHBUFFER(sample.buffer);
+    }
+    loops++;
+  });
+
+  assert.sameValue(loops, 2);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-not-called-on-empty-array.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-not-called-on-empty-array.js
new file mode 100644
index 0000000000..7c863b77c2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/predicate-not-called-on-empty-array.js
@@ -0,0 +1,51 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Predicate is not called on empty instances
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA();
+  var called = false;
+
+  var result = sample.find(function() {
+    called = true;
+    return true;
+  });
+
+  assert.sameValue(
+    called,
+    false,
+    "empty instance does not call predicate"
+  );
+  assert.sameValue(
+    result,
+    undefined,
+    "find returns undefined when predicate is not called"
+  );
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-predicate-call.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-predicate-call.js
new file mode 100644
index 0000000000..406a6618f9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-predicate-call.js
@@ -0,0 +1,42 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Return abrupt from predicate call.
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(1);
+
+  var predicate = function() {
+    throw new Test262Error();
+  };
+
+  assert.throws(Test262Error, function() {
+    sample.find(predicate);
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-this-out-of-bounds.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-this-out-of-bounds.js
new file mode 100644
index 0000000000..2025d13dd8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-abrupt-from-this-out-of-bounds.js
@@ -0,0 +1,62 @@
+// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-%typedarray%.prototype.find
+description: Return abrupt when "this" value fails buffer boundary checks
+includes: [testBigIntTypedArray.js]
+features: [ArrayBuffer, BigInt, TypedArray, arrow-function, resizable-arraybuffer]
+---*/
+
+assert.sameValue(
+  typeof TypedArray.prototype.find,
+  'function',
+  'implements TypedArray.prototype.find'
+);
+
+assert.sameValue(
+  typeof ArrayBuffer.prototype.resize,
+  'function',
+  'implements ArrayBuffer.prototype.resize'
+);
+
+testWithBigIntTypedArrayConstructors(TA => {
+  var BPE = TA.BYTES_PER_ELEMENT;
+  var ab = new ArrayBuffer(BPE * 4, {maxByteLength: BPE * 5});
+  var array = new TA(ab, BPE, 2);
+
+  try {
+    ab.resize(BPE * 5);
+  } catch (_) {}
+
+  // no error following grow:
+  array.find(() => {});
+
+  try {
+    ab.resize(BPE * 3);
+  } catch (_) {}
+
+  // no error following shrink (within bounds):
+  array.find(() => {});
+
+  var expectedError;
+  try {
+    ab.resize(BPE * 2);
+    // If the preceding "resize" operation is successful, the typed array will
+    // be out out of bounds, so the subsequent prototype method should produce
+    // a TypeError due to the semantics of ValidateTypedArray.
+    expectedError = TypeError;
+  } catch (_) {
+    // The host is permitted to fail any "resize" operation at its own
+    // discretion. If that occurs, the find operation should complete
+    // successfully.
+    expectedError = Test262Error;
+  }
+
+  assert.throws(expectedError, () => {
+    array.find(() => {});
+    throw new Test262Error('find completed successfully');
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-found-value-predicate-result-is-true.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-found-value-predicate-result-is-true.js
new file mode 100644
index 0000000000..a5c977152a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-found-value-predicate-result-is-true.js
@@ -0,0 +1,67 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Return found value if predicate return a boolean true value.
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+    d. If testResult is true, return kValue.
+  ...
+includes: [testBigIntTypedArray.js]
+features: [BigInt, Symbol, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([39n, 2n, 62n]);
+  var called, result;
+
+  called = 0;
+  result = sample.find(function() {
+    called++;
+    return true;
+  });
+  assert.sameValue(result, 39n, "returned true on sample[0]");
+  assert.sameValue(called, 1, "predicate was called once");
+
+  called = 0;
+  result = sample.find(function(val) {
+    called++;
+    return val === 62n;
+  });
+  assert.sameValue(called, 3, "predicate was called three times");
+  assert.sameValue(result, 62n, "returned true on sample[3]");
+
+  result = sample.find(function() { return "string"; });
+  assert.sameValue(result, 39n, "ToBoolean(string)");
+
+  result = sample.find(function() { return {}; });
+  assert.sameValue(result, 39n, "ToBoolean(object)");
+
+  result = sample.find(function() { return Symbol(""); });
+  assert.sameValue(result, 39n, "ToBoolean(symbol)");
+
+  result = sample.find(function() { return 1; });
+  assert.sameValue(result, 39n, "ToBoolean(number)");
+
+  result = sample.find(function() { return -1; });
+  assert.sameValue(result, 39n, "ToBoolean(negative number)");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-undefined-if-predicate-returns-false-value.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-undefined-if-predicate-returns-false-value.js
new file mode 100644
index 0000000000..43714b5e4a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/return-undefined-if-predicate-returns-false-value.js
@@ -0,0 +1,62 @@
+// 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-%typedarray%.prototype.find
+description: >
+  Return undefined if predicate always returns a boolean false value.
+info: |
+  22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+
+  %TypedArray%.prototype.find is a distinct function that implements the same
+  algorithm as Array.prototype.find as defined in 22.1.3.8 except that the this
+  object's [[ArrayLength]] internal slot is accessed in place of performing a
+  [[Get]] of "length". The implementation of the algorithm may be optimized with
+  the knowledge that the this value is an object that has a fixed length and
+  whose integer indexed properties are not sparse.
+
+  ...
+
+  22.1.3.8 Array.prototype.find ( predicate[ , thisArg ] )
+
+  ...
+  6. Repeat, while k < len
+    ...
+    c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+    ...
+  7. Return undefined.
+includes: [testBigIntTypedArray.js]
+features: [BigInt, Symbol, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA(3);
+  var called = 0;
+
+  var result = sample.find(function() {
+    called++;
+    return false;
+  });
+
+  assert.sameValue(called, 3, "predicate was called three times");
+  assert.sameValue(result, undefined);
+
+  result = sample.find(function() { return ""; });
+  assert.sameValue(result, undefined, "ToBoolean(empty string)");
+
+  result = sample.find(function() { return undefined; });
+  assert.sameValue(result, undefined, "ToBoolean(undefined)");
+
+  result = sample.find(function() { return null; });
+  assert.sameValue(result, undefined, "ToBoolean(null)");
+
+  result = sample.find(function() { return 0; });
+  assert.sameValue(result, undefined, "ToBoolean(0)");
+
+  result = sample.find(function() { return -0; });
+  assert.sameValue(result, undefined, "ToBoolean(-0)");
+
+  result = sample.find(function() { return NaN; });
+  assert.sameValue(result, undefined, "ToBoolean(NaN)");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/shell.js b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/shell.js
new file mode 100644
index 0000000000..90ee9c114d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/TypedArray/prototype/find/BigInt/shell.js
@@ -0,0 +1,42 @@
+// GENERATED, DO NOT EDIT
+// file: testBigIntTypedArray.js
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of functions used to assert the correctness of BigInt TypedArray objects.
+defines:
+  - TypedArray
+  - testWithBigIntTypedArrayConstructors
+---*/
+
+/**
+ * The %TypedArray% intrinsic constructor function.
+ */
+var TypedArray = Object.getPrototypeOf(Int8Array);
+
+/**
+ * Calls the provided function for every typed array constructor.
+ *
+ * @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
+ * @param {Array} selected - An optional Array with filtered typed arrays
+ */
+function testWithBigIntTypedArrayConstructors(f, selected) {
+  /**
+   * Array containing every BigInt typed array constructor.
+   */
+  var constructors = selected || [
+    BigInt64Array,
+    BigUint64Array
+  ];
+
+  for (var i = 0; i < constructors.length; ++i) {
+    var constructor = constructors[i];
+    try {
+      f(constructor);
+    } catch (e) {
+      e.message += " (Testing with " + constructor.name + ".)";
+      throw e;
+    }
+  }
+}