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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/statements/for-in-with-assignment-semantics.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/statements/for-in-with-assignment-semantics.js | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/tests/non262/statements/for-in-with-assignment-semantics.js b/js/src/tests/non262/statements/for-in-with-assignment-semantics.js new file mode 100644 index 0000000000..f1dbb3438f --- /dev/null +++ b/js/src/tests/non262/statements/for-in-with-assignment-semantics.js @@ -0,0 +1,46 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +const unreachable = () => { throw "unreachable"; }; + +// var-initializer expression is executed before for-in expression. +var log = ""; +for (var x = (log += "head") in (log += "|expr", null)) unreachable(); +assertEq(log, "head|expr"); + +log = ""; +for (var x = (log += "head") in (log += "|expr", {})) unreachable(); +assertEq(log, "head|expr"); + + +// for-in expression isn't executed when var-initializer throws exception. +function ExpectedError() {} +assertThrowsInstanceOf(() => { + var throwErr = () => { throw new ExpectedError(); }; + for (var x = throwErr() in unreachable()) unreachable(); +}, ExpectedError); + + +// Ensure environment operations are performed correctly. +var scope = new Proxy({x: 0}, new Proxy({}, { + get(t, pk, r) { + log += pk + "|"; + } +})); + +log = ""; +with (scope) { + for (var x = 0 in {}) ; +} +assertEq(log, "has|get|set|getOwnPropertyDescriptor|defineProperty|"); + +log = ""; +with (scope) { + for (var x = 0 in {p: 0}) ; +} +assertEq(log, "has|get|set|getOwnPropertyDescriptor|defineProperty|".repeat(2)); + + +if (typeof reportCompare === "function") + reportCompare(true, true); |