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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-1.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-1.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/non262/generators/delegating-yield-1.js b/js/src/tests/non262/generators/delegating-yield-1.js new file mode 100644 index 0000000000..f9df1d7f89 --- /dev/null +++ b/js/src/tests/non262/generators/delegating-yield-1.js @@ -0,0 +1,42 @@ +// This file was written by Andy Wingo <wingo@igalia.com> and originally +// contributed to V8 as generators-objects.js, available here: +// +// http://code.google.com/p/v8/source/browse/branches/bleeding_edge/test/mjsunit/harmony/generators-objects.js + +// Test that yield* re-yields received results without re-boxing. + +function results(results) { + var i = 0; + function next() { + return results[i++]; + } + var iter = { next: next } + var ret = {}; + ret[Symbol.iterator] = function () { return iter; } + return ret; +} + +function* yield_results(expected) { + return yield* results(expected); +} + +function collect_results(iterable) { + var ret = []; + var result; + var iter = iterable[Symbol.iterator](); + do { + result = iter.next(); + ret.push(result); + } while (!result.done); + return ret; +} + +// We have to put a full result for the end, because the return will re-box. +var expected = [{value: 1}, {value: 34, done: true}]; + +// Sanity check. +assertDeepEq(expected, collect_results(results(expected))); +assertDeepEq(expected, collect_results(yield_results(expected))); + +if (typeof reportCompare == "function") + reportCompare(true, true); |