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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/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.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/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js b/js/src/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js new file mode 100644 index 0000000000..0de3000c3f --- /dev/null +++ b/js/src/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js @@ -0,0 +1,26 @@ +// Test handling of false return from a handler.defineProperty() hook. + +load(libdir + "asserts.js"); + +var obj = {x: 1, y: 2}; +var nope = false; +var p = new Proxy(obj, { + defineProperty(target, key, desc) { return nope; } +}); + +// Object.defineProperty throws on failure. +print(1); +assertThrowsInstanceOf(() => Object.defineProperty(p, "z", {value: 3}), TypeError); +assertEq("z" in obj, false); +assertThrowsInstanceOf(() => Object.defineProperty(p, "x", {value: 0}), TypeError); + +// Setting a property ultimately causes [[DefineOwnProperty]] to be called. +// In strict mode code only, this is a TypeError. +print(2); +assertEq(p.z = 3, 3); +assertThrowsInstanceOf(() => { "use strict"; p.z = 3; }, TypeError); + +// Other falsy values also trigger failure. +print(3); +for (nope of [0, -0, NaN, ""]) + assertThrowsInstanceOf(() => { "use strict"; p.z = 3; }, TypeError); |