Merge pull request #1284 from cxielarko/getbigint64

DataView.prototype.getBigInt64 tests

harness/typeCoercion.js

@@ -323,6 +323,24 @@ function testNotCoercibleToString(test) {
   testNotCoercibleToPrimitive("string", test);
 }
 
+function testCoercibleToBooleanTrue(test) {
+  test(true);
+  test(1);
+  test("string");
+  test(Symbol("1"));
+  test({});
+}
+
+function testCoercibleToBooleanFalse(test) {
+  test(undefined);
+  test(null);
+  test(false);
+  test(0);
+  test(-0);
+  test(NaN);
+  test("");
+}
+
 function testCoercibleToBigIntZero(test) {
   function testPrimitiveValue(value) {
     test(value);

test/built-ins/DataView/prototype/getBigInt64/detached-buffer-after-toindex-byteoffset.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Detached buffer is only checked after ToIndex(requestIndex)
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let getIndex be ? ToIndex(requestIndex).
+  ...
+  6. Let buffer be view.[[ViewedArrayBuffer]].
+  7. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var buffer = new ArrayBuffer(8);
+var sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+
+assert.throws(RangeError, () => sample.getBigInt64(Infinity),
+              "DataView access at index Infinity should throw");
+
+assert.throws(RangeError, () => sample.getBigInt64(-1),
+              "DataView access at index -1 should throw");

test/built-ins/DataView/prototype/getBigInt64/detached-buffer-before-outofrange-byteoffset.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Detached buffer is checked before out of range byteOffset's value
+info: |
+  24.2.4.8 DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  6. Let buffer be view.[[ViewedArrayBuffer]].
+  7. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+  11. If getIndex + elementSize > viewSize, throw a RangeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var sample;
+var buffer = new ArrayBuffer(12);
+
+sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+
+assert.throws(TypeError, () => sample.getBigInt64(13),
+              "detached DataView access should throw");

test/built-ins/DataView/prototype/getBigInt64/detached-buffer.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Throws a TypeError if buffer is detached
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  8. Let buffer be the value of view's [[ViewedArrayBuffer]] internal slot.
+  9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+assert.throws(TypeError, () => sample.getBigInt64(0),
+              "detached DataView access should throw");

test/built-ins/DataView/prototype/getBigInt64/index-is-out-of-range.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Throws a RangeError if getIndex + elementSize > viewSize
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  10. Let viewOffset be the value of view's [[ByteOffset]] internal slot.
+  11. Let viewSize be the value of view's [[ByteLength]] internal slot.
+  12. Let elementSize be the Number value of the Element Size value specified in
+  Table 50 for Element Type type.
+  13. If getIndex + elementSize > viewSize, throw a RangeError exception.
+  ...
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var sample;
+var buffer = new ArrayBuffer(12);
+
+sample = new DataView(buffer, 0);
+
+assert.throws(RangeError, () => sample.getBigInt64(Infinity),
+              "DataView access at index Infinity should throw");
+
+assert.throws(RangeError, () => sample.getBigInt64(13), "13 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(12), "12 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(11), "11 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(10), "10 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(9), "9 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(8), "8 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(7), "7 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(6), "6 + 8 > 12");
+
+assert.throws(RangeError, () => sample.getBigInt64(5), "5 + 8 > 12");
+
+sample = new DataView(buffer, 8);
+assert.throws(RangeError, () => sample.getBigInt64(1),
+              "1 + 8 > 4 (offset)");
+
+sample = new DataView(buffer, 9);
+assert.throws(RangeError, () => sample.getBigInt64(0),
+              "0 + 8 > 3 (offset)");
+
+sample = new DataView(buffer, 0, 8);
+assert.throws(RangeError, () => sample.getBigInt64(1),
+              "1 + 8 > 8 (length)");
+
+sample = new DataView(buffer, 0, 7);
+assert.throws(RangeError, () => sample.getBigInt64(0),
+              "0 + 8 > 7 (length)");
+
+sample = new DataView(buffer, 4, 8);
+assert.throws(RangeError, () => sample.getBigInt64(1),
+              "1 + 8 > 8 (offset+length)");
+
+sample = new DataView(buffer, 4, 7);
+assert.throws(RangeError, () => sample.getBigInt64(0),
+              "0 + 8 > 7 (offset+length)");

test/built-ins/DataView/prototype/getBigInt64/length.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: DataView.prototype.getBigInt64.length property descriptor
+info: >
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  17 ECMAScript Standard Built-in Objects
+
+  Every built-in function object, including constructors, has a length
+  property whose value is an integer. Unless otherwise specified, this
+  value is equal to the largest number of named arguments shown in the
+  subclause headings for the function description. Optional parameters
+  (which are indicated with brackets: [ ]) or rest parameters (which
+  are shown using the form «...name») are not included in the default
+  argument count.
+
+  Unless otherwise specified, the length property of a built-in
+  function object has the attributes { [[Writable]]: false,
+  [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [DataView, ArrayBuffer, BigInt]
+---*/
+
+verifyProperty(DataView.prototype.getBigInt64, "length", {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true
+});

test/built-ins/DataView/prototype/getBigInt64/name.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: DataView.prototype.getBigInt64.name property descriptor
+info: >
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  17 ECMAScript Standard Built-in Objects
+
+  Every built-in function object, including constructors, that is not
+  identified as an anonymous function has a name property whose value
+  is a String. Unless otherwise specified, this value is the name that
+  is given to the function in this specification. For functions that
+  are specified as properties of objects, the name value is the
+  property name string used to access the function. [...]
+
+  Unless otherwise specified, the name property of a built-in function
+  object, if it exists, has the attributes { [[Writable]]: false,
+  [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [DataView, ArrayBuffer, BigInt]
+---*/
+
+verifyProperty(DataView.prototype.getBigInt64, "name", {
+  value: "getBigInt64",
+  writable: false,
+  enumerable: false,
+  configurable: true
+});

test/built-ins/DataView/prototype/getBigInt64/negative-byteoffset-throws.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Throws a RangeError if getIndex < 0
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let getIndex be ? ToIndex(requestIndex).
+  ...
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var buffer = new ArrayBuffer(12);
+var sample = new DataView(buffer, 0);
+
+assert.throws(RangeError, () => sample.getBigInt64(-1),
+              "DataView access at index -1 should throw");
+
+assert.throws(RangeError, () => sample.getBigInt64(-Infinity),
+              "DataView access at index -Infinity should throw");

test/built-ins/DataView/prototype/getBigInt64/return-abrupt-from-tonumber-byteoffset-symbol.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Return abrupt from ToNumber(symbol byteOffset)
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let getIndex be ? ToNumber(requestIndex).
+  ...
+features: [DataView, ArrayBuffer, Symbol, BigInt, arrow-function]
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+var s = Symbol("1");
+
+assert.throws(TypeError, () => sample.getBigInt64(s));

test/built-ins/DataView/prototype/getBigInt64/return-abrupt-from-tonumber-byteoffset.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Return abrupt from ToNumber(byteOffset)
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let getIndex be ? ToNumber(requestIndex).
+  ...
+features: [DataView, ArrayBuffer, BigInt, arrow-function]
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+var bo1 = { valueOf() { throw new Test262Error(); } };
+var bo2 = { toString() { throw new Test262Error(); } };
+
+assert.throws(Test262Error, () => sample.getBigInt64(bo1), "valueOf");
+
+assert.throws(Test262Error, () => sample.getBigInt64(bo2), "toString");

test/built-ins/DataView/prototype/getBigInt64/return-value-clean-arraybuffer.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Return value from Buffer using a clean ArrayBuffer
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  12. Let bufferIndex be getIndex + viewOffset.
+  13. Return GetValueFromBuffer(buffer, bufferIndex, type, false,
+     "Unordered", isLittleEndian).
+
+  24.1.1.6 GetValueFromBuffer ( arrayBuffer, byteIndex, type,
+  isTypedArray, order [ , isLittleEndian ] )
+
+  ...
+  9. Return RawBytesToNumber(type, rawValue, isLittleEndian).
+
+  24.1.1.5 RawBytesToNumber( type, rawBytes, isLittleEndian )
+
+  ...
+  2. If isLittleEndian is false, reverse the order of the elements of rawBytes.
+  ...
+features: [DataView, ArrayBuffer, BigInt]
+---*/
+
+var buffer = new ArrayBuffer(12);
+var sample = new DataView(buffer, 0);
+
+assert.sameValue(sample.getBigInt64(0, true), 0n, "sample.getBigInt64(0, true)");
+assert.sameValue(sample.getBigInt64(1, true), 0n, "sample.getBigInt64(1, true)");
+assert.sameValue(sample.getBigInt64(2, true), 0n, "sample.getBigInt64(2, true)");
+assert.sameValue(sample.getBigInt64(3, true), 0n, "sample.getBigInt64(3, true)");
+assert.sameValue(sample.getBigInt64(4, true), 0n, "sample.getBigInt64(4, true)");
+assert.sameValue(sample.getBigInt64(0, false), 0n, "sample.getBigInt64(0, false)");
+assert.sameValue(sample.getBigInt64(1, false), 0n, "sample.getBigInt64(1, false)");
+assert.sameValue(sample.getBigInt64(2, false), 0n, "sample.getBigInt64(2, false)");
+assert.sameValue(sample.getBigInt64(3, false), 0n, "sample.getBigInt64(3, false)");
+assert.sameValue(sample.getBigInt64(4, false), 0n, "sample.getBigInt64(4, false)");

test/built-ins/DataView/prototype/getBigInt64/return-values-custom-offset.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Return values from Buffer using a custom offset
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  12. Let bufferIndex be getIndex + viewOffset.
+  13. Return GetValueFromBuffer(buffer, bufferIndex, type, false,
+     "Unordered", isLittleEndian).
+
+  24.1.1.6 GetValueFromBuffer ( arrayBuffer, byteIndex, type,
+  isTypedArray, order [ , isLittleEndian ] )
+
+  ...
+  9. Return RawBytesToNumber(type, rawValue, isLittleEndian).
+
+  24.1.1.5 RawBytesToNumber( type, rawBytes, isLittleEndian )
+
+  ...
+  2. If isLittleEndian is false, reverse the order of the elements of rawBytes.
+  ...
+features: [DataView, ArrayBuffer, DataView.prototype.setUint8, BigInt]
+---*/
+
+var buffer = new ArrayBuffer(16);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 0x27);
+sample.setUint8(1, 0x02);
+sample.setUint8(2, 0x06);
+sample.setUint8(3, 0x02);
+sample.setUint8(4, 0x80);
+sample.setUint8(5, 0x00);
+sample.setUint8(6, 0x80);
+sample.setUint8(7, 0x01);
+sample.setUint8(8, 0x7f);
+sample.setUint8(9, 0x00);
+sample.setUint8(10, 0x01);
+sample.setUint8(11, 0x02);
+sample.setUint8(12, 0x80);
+sample.setUint8(13, 0x7f);
+sample.setUint8(14, 0xff);
+sample.setUint8(15, 0x80);
+
+sample = new DataView(buffer, 4);
+
+assert.sameValue(sample.getBigInt64(0, false), -0x7fff7ffe80fffefen, "0, false");
+assert.sameValue(sample.getBigInt64(1, false), 0x80017f00010280n, "1, false");
+assert.sameValue(sample.getBigInt64(2, false), -0x7ffe80fffefd7f81n, "2, false");
+assert.sameValue(sample.getBigInt64(3, false), 0x17f000102807fffn, "3, false");
+assert.sameValue(sample.getBigInt64(4, false), 0x7f000102807fff80n, "4, false");
+
+assert.sameValue(sample.getBigInt64(0, true), 0x201007f01800080n, "0, true");
+assert.sameValue(sample.getBigInt64(1, true), -0x7ffdfeff80fe8000n, "1, true");
+assert.sameValue(sample.getBigInt64(2, true), 0x7f800201007f0180n, "2, true");
+assert.sameValue(sample.getBigInt64(3, true), -0x807ffdfeff80ffn, "3, true");
+assert.sameValue(sample.getBigInt64(4, true), -0x7f00807ffdfeff81n, "4, true");

test/built-ins/DataView/prototype/getBigInt64/return-values.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Return values from Buffer
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  14. Let bufferIndex be getIndex + viewOffset.
+  15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian).
+  ...
+
+  24.1.1.6 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian
+  ] )
+
+  ...
+  8. If isLittleEndian is false, reverse the order of the elements of rawValue.
+  ...
+features: [DataView, ArrayBuffer, DataView.prototype.setUint8, BigInt]
+---*/
+
+var buffer = new ArrayBuffer(16);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 0x27);
+sample.setUint8(1, 0x02);
+sample.setUint8(2, 0x06);
+sample.setUint8(3, 0x02);
+sample.setUint8(4, 0x80);
+sample.setUint8(5, 0x00);
+sample.setUint8(6, 0x80);
+sample.setUint8(7, 0x01);
+sample.setUint8(8, 0x7f);
+sample.setUint8(9, 0x00);
+sample.setUint8(10, 0x01);
+sample.setUint8(11, 0x02);
+sample.setUint8(12, 0x80);
+sample.setUint8(13, 0x7f);
+sample.setUint8(14, 0xff);
+sample.setUint8(15, 0x80);
+
+assert.sameValue(sample.getBigInt64(0, false), 0x2702060280008001n, "0, false");
+assert.sameValue(sample.getBigInt64(1, false), 0x20602800080017fn, "1, false");
+assert.sameValue(sample.getBigInt64(2, false), 0x602800080017f00n, "2, false");
+assert.sameValue(sample.getBigInt64(3, false), 0x2800080017f0001n, "3, false");
+assert.sameValue(sample.getBigInt64(4, false), -0x7fff7ffe80fffefen, "4, false");
+assert.sameValue(sample.getBigInt64(5, false), 0x80017f00010280n, "5, false");
+assert.sameValue(sample.getBigInt64(6, false), -0x7ffe80fffefd7f81n, "6, false");
+assert.sameValue(sample.getBigInt64(7, false), 0x17f000102807fffn, "7, false");
+assert.sameValue(sample.getBigInt64(8, false), 0x7f000102807fff80n, "8, false");
+
+assert.sameValue(sample.getBigInt64(0, true), 0x180008002060227n, "0, true");
+assert.sameValue(sample.getBigInt64(1, true), 0x7f01800080020602n, "1, true");
+assert.sameValue(sample.getBigInt64(2, true), 0x7f018000800206n, "2, true");
+assert.sameValue(sample.getBigInt64(3, true), 0x1007f0180008002n, "3, true");
+assert.sameValue(sample.getBigInt64(4, true), 0x201007f01800080n, "4, true");
+assert.sameValue(sample.getBigInt64(5, true), -0x7ffdfeff80fe8000n, "5, true");
+assert.sameValue(sample.getBigInt64(6, true), 0x7f800201007f0180n, "6, true");
+assert.sameValue(sample.getBigInt64(7, true), -0x807ffdfeff80ffn, "7, true");
+assert.sameValue(sample.getBigInt64(8, true), -0x7f00807ffdfeff81n, "8, true");

test/built-ins/DataView/prototype/getBigInt64/this-has-no-dataview-internal.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Throws a TypeError if this does not have a [[DataView]] internal slot
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  1. If Type(view) is not Object, throw a TypeError exception.
+  2. If view does not have a [[DataView]] internal slot, throw a TypeError
+  exception.
+  ...
+features: [DataView, ArrayBuffer, Int8Array, BigInt, arrow-function]
+---*/
+
+var getBigInt64 = DataView.prototype.getBigInt64;
+
+assert.throws(TypeError, () => getBigInt64.call({}), "{}");
+
+assert.throws(TypeError, () => getBigInt64.call([]), "[]");
+
+var ab = new ArrayBuffer(1);
+assert.throws(TypeError, () => getBigInt64.call(ab), "ArrayBuffer");
+
+var ta = new Int8Array();
+assert.throws(TypeError, () => getBigInt64.call(ta), "TypedArray");

test/built-ins/DataView/prototype/getBigInt64/this-is-not-object.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: Throws a TypeError if this is not Object
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  1. If Type(view) is not Object, throw a TypeError exception.
+  ...
+features: [DataView, ArrayBuffer, Symbol, BigInt, arrow-function]
+---*/
+
+var getBigInt64 = DataView.prototype.getBigInt64;
+
+assert.throws(TypeError, () => getBigInt64.call(undefined),
+              "undefined");
+
+assert.throws(TypeError, () => getBigInt64.call(null), "null");
+
+assert.throws(TypeError, () => getBigInt64.call(1), "1");
+
+assert.throws(TypeError, () => getBigInt64.call("string"), "string");
+
+assert.throws(TypeError, () => getBigInt64.call(true), "true");
+
+assert.throws(TypeError, () => getBigInt64.call(false), "false");
+
+var s = Symbol("1");
+assert.throws(TypeError, () => getBigInt64.call(s), "symbol");

test/built-ins/DataView/prototype/getBigInt64/to-boolean-littleendian.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  Boolean littleEndian argument coerced in ToBoolean
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  5. Set isLittleEndian to ToBoolean(isLittleEndian).
+  ...
+  12. Let bufferIndex be getIndex + viewOffset.
+  13. Return GetValueFromBuffer(buffer, bufferIndex, type, false,
+  "Unordered", isLittleEndian).
+
+  24.1.1.6 GetValueFromBuffer ( arrayBuffer, byteIndex, type,
+  isTypedArray, order [ , isLittleEndian ] )
+
+  ...
+  9. Return RawBytesToNumber(type, rawValue, isLittleEndian).
+
+  24.1.1.5 RawBytesToNumber( type, rawBytes, isLittleEndian )
+
+  ...
+  2. If isLittleEndian is false, reverse the order of the elements of rawBytes.
+  ...
+includes: [typeCoercion.js]
+features: [DataView, ArrayBuffer, DataView.prototype.setUint8, BigInt, Symbol, Symbol.toPrimitive]
+---*/
+
+var buffer = new ArrayBuffer(8);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(7, 0xff);
+
+// False
+assert.sameValue(sample.getBigInt64(0), 0xffn, "no argument");
+testCoercibleToBooleanFalse(function (x) {
+  assert.sameValue(sample.getBigInt64(0, x), 0xffn);
+});
+
+// True
+testCoercibleToBooleanTrue(function (x) {
+  assert.sameValue(sample.getBigInt64(0, x), -0x100000000000000n);
+});

test/built-ins/DataView/prototype/getBigInt64/toindex-byteoffset.js

+// Copyright (C) 2017 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getbigint64
+description: >
+  ToIndex conversions on byteOffset
+info: |
+  DataView.prototype.getBigInt64 ( byteOffset [ , littleEndian ] )
+
+  1. Let v be the this value.
+  2. If littleEndian is not present, let littleEndian be undefined.
+  3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int64").
+
+  24.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let getIndex be ? ToIndex(requestIndex).
+  ...
+includes: [typeCoercion.js]
+features: [DataView, ArrayBuffer, DataView.prototype.setUint8, BigInt, Symbol, Symbol.toPrimitive]
+---*/
+
+var buffer = new ArrayBuffer(12);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 0x27);
+sample.setUint8(1, 0x02);
+sample.setUint8(2, 0x06);
+sample.setUint8(3, 0x02);
+sample.setUint8(4, 0x80);
+sample.setUint8(5, 0x00);
+sample.setUint8(6, 0x80);
+sample.setUint8(7, 0x01);
+sample.setUint8(8, 0x7f);
+sample.setUint8(9, 0x00);
+sample.setUint8(10, 0x01);
+sample.setUint8(11, 0x02);
+
+testCoercibleToIndexZero(function (x) {
+  assert.sameValue(sample.getBigInt64(x), 0x2702060280008001n);
+});
+
+testCoercibleToIndexOne(function (x) {
+  assert.sameValue(sample.getBigInt64(x), 0x20602800080017fn);
+});
+
+testCoercibleToIndexFromIndex(2, function (x) {
+  assert.sameValue(sample.getBigInt64(x), 0x602800080017F00n);
+});
+
+testCoercibleToIndexFromIndex(3, function (x) {
+  assert.sameValue(sample.getBigInt64(x), 0x2800080017F0001n);
+});