95 lines
3.5 KiB
HTML
95 lines
3.5 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>WebAssembly JS API: Default [[Prototype]] value is from NewTarget's Realm</title>
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<link rel="help" href="https://webidl.spec.whatwg.org/#internally-create-a-new-object-implementing-the-interface">
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<link rel="help" href="https://tc39.es/ecma262/#sec-nativeerror">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="wasm-module-builder.js"></script>
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<body>
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<iframe id="constructor-iframe" hidden></iframe>
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<iframe id="new-target-iframe" hidden></iframe>
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<iframe id="other-iframe" hidden></iframe>
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<script>
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"use strict";
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const constructorRealm = document.querySelector("#constructor-iframe").contentWindow;
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const newTargetRealm = document.querySelector("#new-target-iframe").contentWindow;
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const otherRealm = document.querySelector("#other-iframe").contentWindow;
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const emptyModuleBinary = new WasmModuleBuilder().toBuffer();
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const interfaces = [
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["Module", emptyModuleBinary],
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["Instance", new WebAssembly.Module(emptyModuleBinary)],
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["Memory", {initial: 0}],
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["Table", {element: "anyfunc", initial: 0}],
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["Global", {value: "i32"}],
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// See step 2 of https://tc39.es/ecma262/#sec-nativeerror
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["CompileError"],
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["LinkError"],
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["RuntimeError"],
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];
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const primitives = [
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undefined,
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null,
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false,
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true,
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0,
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-1,
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"",
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"str",
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Symbol(),
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];
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const getNewTargets = function* (realm) {
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for (const primitive of primitives) {
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const newTarget = new realm.Function();
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newTarget.prototype = primitive;
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yield [newTarget, "cross-realm NewTarget with `" + format_value(primitive) + "` prototype"];
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}
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// GetFunctionRealm (https://tc39.es/ecma262/#sec-getfunctionrealm) coverage:
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const bindOther = otherRealm.Function.prototype.bind;
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const ProxyOther = otherRealm.Proxy;
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const bound = new realm.Function();
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bound.prototype = undefined;
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yield [bindOther.call(bound), "bound cross-realm NewTarget with `undefined` prototype"];
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const boundBound = new realm.Function();
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boundBound.prototype = null;
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yield [bindOther.call(bindOther.call(boundBound)), "bound bound cross-realm NewTarget with `null` prototype"];
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const boundProxy = new realm.Function();
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boundProxy.prototype = false;
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yield [bindOther.call(new ProxyOther(boundProxy, {})), "bound Proxy of cross-realm NewTarget with `false` prototype"];
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const proxy = new realm.Function();
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proxy.prototype = true;
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yield [new ProxyOther(proxy, {}), "Proxy of cross-realm NewTarget with `true` prototype"];
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const proxyProxy = new realm.Function();
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proxyProxy.prototype = -0;
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yield [new ProxyOther(new ProxyOther(proxyProxy, {}), {}), "Proxy of Proxy of cross-realm NewTarget with `-0` prototype"];
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const proxyBound = new realm.Function();
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proxyBound.prototype = NaN;
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yield [new ProxyOther(bindOther.call(proxyBound), {}), "Proxy of bound cross-realm NewTarget with `NaN` prototype"];
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};
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for (const [interfaceName, constructorArg] of interfaces) {
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for (const [newTarget, testDescription] of getNewTargets(newTargetRealm)) {
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test(() => {
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const Constructor = constructorRealm.WebAssembly[interfaceName];
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const object = Reflect.construct(Constructor, [constructorArg], newTarget);
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const NewTargetConstructor = newTargetRealm.WebAssembly[interfaceName];
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assert_true(object instanceof NewTargetConstructor);
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assert_equals(Object.getPrototypeOf(object), NewTargetConstructor.prototype);
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}, `WebAssembly.${interfaceName}: ${testDescription}`);
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}
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}
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</script>
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</body>
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