diff options
Diffstat (limited to 'js/src/tests/non262/TypedArray/test-integrity-level.js')
-rw-r--r-- | js/src/tests/non262/TypedArray/test-integrity-level.js | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/test-integrity-level.js b/js/src/tests/non262/TypedArray/test-integrity-level.js new file mode 100644 index 0000000000..c382b4967c --- /dev/null +++ b/js/src/tests/non262/TypedArray/test-integrity-level.js @@ -0,0 +1,67 @@ +const EMPTY = 0; +const INLINE_STORAGE = 10; +const NON_INLINE_STORAGE = 1024; + +// Empty typed arrays can be sealed. +{ + let ta = new Int32Array(EMPTY); + Object.seal(ta); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), true); + assertEq(Object.isFrozen(ta), true); +} + +// Non-empty typed arrays cannot be sealed. +for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) { + let ta = new Int32Array(length); + assertThrowsInstanceOf(() => Object.seal(ta), TypeError); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), false); + assertEq(Object.isFrozen(ta), false); +} + +// Empty typed arrays can be frozen. +{ + let ta = new Int32Array(EMPTY); + Object.freeze(ta); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), true); + assertEq(Object.isFrozen(ta), true); +} + +// Non-empty typed arrays cannot be frozen. +for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) { + let ta = new Int32Array(length); + assertThrowsInstanceOf(() => Object.freeze(ta), TypeError); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), false); + assertEq(Object.isFrozen(ta), false); +} + +// Non-extensible empty typed arrays are sealed and frozen. +{ + let ta = new Int32Array(EMPTY); + Object.preventExtensions(ta); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), true); + assertEq(Object.isFrozen(ta), true); +} + +// Non-extensible non-empty typed arrays are neither sealed nor frozen. +for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) { + let ta = new Int32Array(length); + Object.preventExtensions(ta); + + assertEq(Object.isExtensible(ta), false); + assertEq(Object.isSealed(ta), false); + assertEq(Object.isFrozen(ta), false); +} + + +if (typeof reportCompare === "function") + reportCompare(true, true); |