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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/destructuring/array-iterator-close.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/destructuring/array-iterator-close.js | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/js/src/tests/non262/destructuring/array-iterator-close.js b/js/src/tests/non262/destructuring/array-iterator-close.js new file mode 100644 index 0000000000..ed35135dba --- /dev/null +++ b/js/src/tests/non262/destructuring/array-iterator-close.js @@ -0,0 +1,93 @@ +// Tests that IteratorClose is called in array destructuring patterns. + +function test() { + var returnCalled = 0; + var returnCalledExpected = 0; + var iterable = {}; + + // empty [] calls IteratorClose regardless of "done" on the result. + iterable[Symbol.iterator] = makeIterator({ + next: function() { + return { done: true }; + }, + ret: function() { + returnCalled++; + return {}; + } + }); + var [] = iterable; + assertEq(returnCalled, ++returnCalledExpected); + + iterable[Symbol.iterator] = makeIterator({ + ret: function() { + returnCalled++; + return {}; + } + }); + var [] = iterable; + assertEq(returnCalled, ++returnCalledExpected); + + // Non-empty destructuring calls IteratorClose if iterator is not done by + // the end of destructuring. + var [a,b] = iterable; + assertEq(returnCalled, ++returnCalledExpected); + var [c,] = iterable; + assertEq(returnCalled, ++returnCalledExpected); + + // throw in lhs ref calls IteratorClose + function throwlhs() { + throw "in lhs"; + } + assertThrowsValue(function() { + 0, [...{}[throwlhs()]] = iterable; + }, "in lhs"); + assertEq(returnCalled, ++returnCalledExpected); + + // throw in lhs ref calls IteratorClose with falsy "done". + iterable[Symbol.iterator] = makeIterator({ + next: function() { + // "done" is undefined. + return {}; + }, + ret: function() { + returnCalled++; + return {}; + } + }); + assertThrowsValue(function() { + 0, [...{}[throwlhs()]] = iterable; + }, "in lhs"); + assertEq(returnCalled, ++returnCalledExpected); + + // throw in iter.next doesn't call IteratorClose + iterable[Symbol.iterator] = makeIterator({ + next: function() { + throw "in next"; + }, + ret: function() { + returnCalled++; + return {}; + } + }); + assertThrowsValue(function() { + var [d] = iterable; + }, "in next"); + assertEq(returnCalled, returnCalledExpected); + + // "return" must return an Object. + iterable[Symbol.iterator] = makeIterator({ + ret: function() { + returnCalled++; + return 42; + } + }); + assertThrowsInstanceOf(function() { + var [] = iterable; + }, TypeError); + assertEq(returnCalled, ++returnCalledExpected); +} + +test(); + +if (typeof reportCompare === "function") + reportCompare(0, 0); |