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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/class/superPropProxies.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/class/superPropProxies.js | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/js/src/tests/non262/class/superPropProxies.js b/js/src/tests/non262/class/superPropProxies.js new file mode 100644 index 0000000000..3ec43b279c --- /dev/null +++ b/js/src/tests/non262/class/superPropProxies.js @@ -0,0 +1,83 @@ +class base { + constructor() { } +} + +let midStaticHandler = { }; + +// We shouldn't use the |this.called| strategy here, since we have proxies +// snooping property accesses. +let getterCalled, setterCalled; + +class mid extends new Proxy(base, midStaticHandler) { + constructor() { super(); } + testSuperInProxy() { + super.prop = "looking"; + assertEq(setterCalled, true); + assertEq(super.prop, "found"); + assertEq(getterCalled, true); + } +} + +class child extends mid { + constructor() { super(); } + static testStaticLookups() { + // This funtion is called more than once. + this.called = false; + super.prop; + assertEq(this.called, true); + } +} + +let midInstance = new mid(); + +// Make sure proxies are searched properly on the prototype chain +let baseHandler = { + get(target, p, receiver) { + assertEq(receiver, midInstance); + getterCalled = true; + return "found"; + }, + + set(t,p,val,receiver) { + assertEq(receiver, midInstance); + assertEq(val, "looking"); + setterCalled = true; + return true; + } +} +Object.setPrototypeOf(base.prototype, new Proxy(Object.prototype, baseHandler)); + +// make sure subclasses are not searched on static or super lookups. +let childHandler = { + get() { throw "NO!"; }, + set() { throw "NO!"; } +} +Object.setPrototypeOf(child.prototype, new Proxy(mid.prototype, childHandler)); + +midInstance.testSuperInProxy(); + +// Don't do this earlier to avoid the lookup of .prototype during class creation +function midGet(target, p, receiver) { + assertEq(receiver, child); + receiver.called = true; +} +midStaticHandler.get = midGet; + +child.testStaticLookups(); + +// Hey does super work in a proxy? +assertEq(new Proxy(({ method() { return super.hasOwnProperty("method"); } }), {}).method(), true); + +// What about a CCW? +var g = newGlobal(); +var wrappedSuper = g.eval("({ method() { return super.hasOwnProperty('method'); } })"); +assertEq(wrappedSuper.method(), true); + +// With a CCW on the proto chain? +var wrappedBase = g.eval("({ method() { return this.__secretProp__; } })"); +var unwrappedDerived = { __secretProp__: 42, method() { return super.method(); } } +Object.setPrototypeOf(unwrappedDerived, wrappedBase); +assertEq(unwrappedDerived.method(), 42); + +if (typeof reportCompare === 'function') + reportCompare(0,0,"OK"); |