diff options
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/TypedArray/from-non-iterable-validation.js | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/from-non-iterable-validation.js b/js/src/tests/non262/TypedArray/from-non-iterable-validation.js new file mode 100644 index 0000000000..3276426b28 --- /dev/null +++ b/js/src/tests/non262/TypedArray/from-non-iterable-validation.js @@ -0,0 +1,140 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +// Summary: Ensure typed array validation is called for TypedArray.from. + +const otherGlobal = typeof newGlobal === "function" ? newGlobal() : undefined; +const typedArrayArgs = [{length: 0}, {length: 1, 0: 123}, {length: 1024, 0: 123}]; + +function createTestCases(TAConstructor, constructor, constructorCrossRealm) { + let testCases = []; + testCases.push({ + species: constructor, + method: TAConstructor.from, + error: TypeError, + }); + if (otherGlobal) { + testCases.push({ + species: constructorCrossRealm, + method: TAConstructor.from, + error: TypeError, + }); + testCases.push({ + species: constructor, + method: otherGlobal[TAConstructor.name].from, + error: otherGlobal.TypeError, + }); + } + return testCases; +} + +// Throws TypeError when the returned value is not a typed array. +for (const TAConstructor of anyTypedArrayConstructors) { + let callCount = 0, expectedCallCount = 0; + function NoTypedArrayConstructor(...args) { + let a = []; + callCount += 1; + return a; + } + function NoTypedArrayConstructorCrossRealm(...args) { + let a = new otherGlobal.Array(); + callCount += 1; + return a; + } + let testCases = createTestCases(TAConstructor, NoTypedArrayConstructor, NoTypedArrayConstructorCrossRealm); + + for (let {species, method, error} of testCases) { + for (let args of typedArrayArgs) { + assertThrowsInstanceOf(() => method.call(species, args), error); + assertEq(callCount, ++expectedCallCount); + } + } +} + +// Throws TypeError exception when returned array is too small. +for (const TAConstructor of anyTypedArrayConstructors) { + let callCount = 0, expectedCallCount = 0; + function TooSmallConstructor(length) { + let a = new TAConstructor(Math.max(length - 1, 0)); + callCount += 1; + return a; + } + function TooSmallConstructorCrossRealm(length) { + let a = new otherGlobal[TAConstructor.name](Math.max(length - 1, 0)); + callCount += 1; + return a; + } + let testCases = createTestCases(TAConstructor, TooSmallConstructor, TooSmallConstructorCrossRealm); + + for (let {species, method, error} of testCases) { + for (let args of typedArrayArgs) { + // Passes when the length is zero. + if (args.length === 0) { + let result = method.call(species, args); + assertEq(result.length, 0); + } else { + assertThrowsInstanceOf(() => method.call(species, args), error); + } + assertEq(callCount, ++expectedCallCount); + } + } +} + +// No exception when array is larger than requested. +for (const TAConstructor of anyTypedArrayConstructors) { + const extraLength = 1; + + let callCount = 0, expectedCallCount = 0; + function TooLargeConstructor(length) { + let a = new TAConstructor(length + extraLength); + callCount += 1; + return a; + } + function TooLargeConstructorCrossRealm(length) { + let a = new otherGlobal[TAConstructor.name](length + extraLength); + callCount += 1; + return a; + } + let testCases = createTestCases(TAConstructor, TooLargeConstructor, TooLargeConstructorCrossRealm); + + for (let {species, method, error} of testCases) { + for (let args of typedArrayArgs) { + let result = method.call(species, args); + assertEq(result.length, args.length + extraLength); + assertEq(result[0], (args.length === 0 ? 0 : 123)); + assertEq(result[args.length + extraLength - 1], 0); + assertEq(callCount, ++expectedCallCount); + } + } +} + +// Throws TypeError exception when returned array is detached. +if (typeof detachArrayBuffer === "function") { + for (const TAConstructor of typedArrayConstructors) { + let callCount = 0, expectedCallCount = 0; + function DetachConstructor(...args) { + let a = new TAConstructor(...args); + detachArrayBuffer(a.buffer); + callCount += 1; + return a; + } + function DetachConstructorCrossRealm(...args) { + let a = new otherGlobal[TAConstructor.name](...args); + otherGlobal.detachArrayBuffer(a.buffer); + callCount += 1; + return a; + } + let testCases = createTestCases(TAConstructor, DetachConstructor, DetachConstructorCrossRealm); + + for (let {species, method, error} of testCases) { + for (let args of typedArrayArgs) { + assertThrowsInstanceOf(() => method.call(species, args), error); + assertEq(callCount, ++expectedCallCount); + } + } + } +} + +if (typeof reportCompare === "function") + reportCompare(0, 0); |