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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/generators/delegating-yield-6.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/generators/delegating-yield-6.js | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/js/src/tests/non262/generators/delegating-yield-6.js b/js/src/tests/non262/generators/delegating-yield-6.js new file mode 100644 index 0000000000..8b358525c4 --- /dev/null +++ b/js/src/tests/non262/generators/delegating-yield-6.js @@ -0,0 +1,56 @@ +// Test that each yield* loop just checks "done", and "value" is only +// fetched once at the end. + +var log = ""; + +function collect_results(iter) { + var ret = []; + var result; + do { + result = iter.next(); + ret.push(result); + } while (!result.done); + return ret; +} + +function Iter(val, count) { + function next() { + log += 'n'; + return { + get done() { log += "d"; return count-- == 0; }, + get value() { log += "v"; return val; } + } + } + + function iterator() { + log += 'i'; + return this; + } + + this.next = next; + this[Symbol.iterator] = iterator; +} + +function* delegate(iter) { return yield* iter; } + +var inner = new Iter(42, 5); +var outer = delegate(inner); + +// Five values, and one terminal value. +outer.next(); +outer.next(); +outer.next(); +outer.next(); +outer.next(); +outer.next(); + +assertEq(log, "indndndndndndv"); + +// Outer's dead, man. Outer's dead. +assertDeepEq(outer.next(), {value: undefined, done: true}); + +// No more checking the iterator. +assertEq(log, "indndndndndndv"); + +if (typeof reportCompare == "function") + reportCompare(true, true); |