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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /js/src/tests/non262/class/superElemDelete.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/class/superElemDelete.js')
-rw-r--r-- | js/src/tests/non262/class/superElemDelete.js | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/tests/non262/class/superElemDelete.js b/js/src/tests/non262/class/superElemDelete.js new file mode 100644 index 0000000000..74d2c94e15 --- /dev/null +++ b/js/src/tests/non262/class/superElemDelete.js @@ -0,0 +1,68 @@ +// Make sure we get the proper side effects. +// |delete super[expr]| applies ToPropertyKey on |expr| before throwing. + +class base { + constructor() { } +} + +class derived extends base { + constructor() { super(); } + testDeleteElem() { + let sideEffect = 0; + let key = { + toString() { + sideEffect++; + return ""; + } + }; + assertThrowsInstanceOf(() => delete super[key], ReferenceError); + assertEq(sideEffect, 1); + } + testDeleteElemPropValFirst() { + // The deletion error is a reference error, even after munging the prototype + // chain. + let key = { + toString() { + Object.setPrototypeOf(derived.prototype, null); + return ""; + } + }; + delete super[key]; + } +} + +class derivedTestDeleteElem extends base { + constructor() { + let sideEffect = 0; + let key = { + toString() { + sideEffect++; + return ""; + } + }; + + assertThrowsInstanceOf(() => delete super[key], ReferenceError); + assertEq(sideEffect, 0); + + super(); + + assertThrowsInstanceOf(() => delete super[key], ReferenceError); + assertEq(sideEffect, 1); + + Object.setPrototypeOf(derivedTestDeleteElem.prototype, null); + + assertThrowsInstanceOf(() => delete super[key], ReferenceError); + assertEq(sideEffect, 2); + + return {}; + } +} + +var d = new derived(); +d.testDeleteElem(); +assertThrowsInstanceOf(() => d.testDeleteElemPropValFirst(), ReferenceError); + +new derivedTestDeleteElem(); + +if (typeof reportCompare === 'function') + reportCompare(0,0,"OK"); |