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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/for-of/array-iterator-changing.js | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/for-of/array-iterator-changing.js')
-rw-r--r-- | js/src/jit-test/tests/for-of/array-iterator-changing.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/array-iterator-changing.js b/js/src/jit-test/tests/for-of/array-iterator-changing.js new file mode 100644 index 000000000..43a7aa40b --- /dev/null +++ b/js/src/jit-test/tests/for-of/array-iterator-changing.js @@ -0,0 +1,29 @@ +// Array iterators reflect changes to elements of the underlying array. + +load(libdir + "asserts.js"); +load(libdir + "iteration.js"); + +var arr = [0, 1, 2]; +var it = arr[Symbol.iterator](); +arr[0] = 1000; +arr[2] = 2000; +assertIteratorNext(it, 1000); +assertIteratorNext(it, 1); +assertIteratorNext(it, 2000); +assertIteratorDone(it, undefined); + +// test that .keys() and .entries() have the same behaviour + +arr = [0, 1, 2]; +var ki = arr.keys(); +var ei = arr.entries(); +arr[0] = 1000; +arr[2] = 2000; +assertIteratorNext(ki, 0); +assertIteratorNext(ei, [0, 1000]); +assertIteratorNext(ki, 1); +assertIteratorNext(ei, [1, 1]); +assertIteratorNext(ki, 2); +assertIteratorNext(ei, [2, 2000]); +assertIteratorDone(ki, undefined); +assertIteratorDone(ei, undefined); |