From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../proxy/testDirectProxyDefinePropertyFailure.js | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 js/src/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js (limited to 'js/src/jit-test/tests/proxy/testDirectProxyDefinePropertyFailure.js') 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); -- cgit v1.2.3