diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/tests/non262/statements/for-in-with-assignment-semantics.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/statements/for-in-with-assignment-semantics.js')
-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); |