mirror of
https://github.com/tc39/test262.git
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e9a5a7f918
* [javascriptcore-test262-automation] changes from git@github.com:WebKit/webkit.git at sha 949e26452cfa153a7f4afe593da97e2fe9e1b706 on Tue Jul 03 2018 14:35:15 GMT-0400 (Eastern Daylight Time)
102 lines
3.2 KiB
JavaScript
102 lines
3.2 KiB
JavaScript
var createBuiltin = $vm.createBuiltin;
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function assert(x) {
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if (!x)
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throw Error("Bad");
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}
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let isConstructor = createBuiltin("(function (c) { return @isConstructor(c); })");
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// Functions.
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assert(isConstructor(assert));
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assert(isConstructor(class{}));
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assert(isConstructor(function(){}));
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// Proxy functions.
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assert(isConstructor(new Proxy(assert, {})));
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assert(isConstructor(new Proxy(class{}, {})));
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assert(isConstructor(new Proxy(function(){}, {})));
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// Bound functions.
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assert(isConstructor(assert.bind(null), {}));
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assert(isConstructor((class{}).bind(null), {}));
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assert(isConstructor(function(){}.bind(null), {}));
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// Builtin constructors.
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assert(isConstructor(Array));
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assert(isConstructor(ArrayBuffer));
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assert(isConstructor(Boolean));
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assert(isConstructor(Date));
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assert(isConstructor(Error));
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assert(isConstructor(Function));
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assert(isConstructor(Map));
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assert(isConstructor(Number));
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assert(isConstructor(Object));
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assert(isConstructor(Promise));
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assert(isConstructor(Proxy));
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assert(isConstructor(RegExp));
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assert(isConstructor(Set));
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assert(isConstructor(String));
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assert(isConstructor(WeakMap));
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assert(isConstructor(WeakSet));
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// Non-function values.
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assert(!isConstructor(undefined));
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assert(!isConstructor(null));
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assert(!isConstructor(true));
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assert(!isConstructor(false));
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assert(!isConstructor(0));
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assert(!isConstructor(1));
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assert(!isConstructor(1.1));
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assert(!isConstructor(-1));
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assert(!isConstructor(Date.now()));
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assert(!isConstructor(new Date));
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assert(!isConstructor(Infinity));
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assert(!isConstructor(NaN));
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assert(!isConstructor(""));
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assert(!isConstructor("test"));
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assert(!isConstructor([]));
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assert(!isConstructor({}));
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assert(!isConstructor(/regex/));
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assert(!isConstructor(Math));
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assert(!isConstructor(JSON));
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assert(!isConstructor(Symbol()));
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assert(!isConstructor(new Error));
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assert(!isConstructor(new Proxy({}, {})));
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assert(!isConstructor(Array.prototype));
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// Symbol is not a constructor.
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assert(!isConstructor(Symbol));
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// Getters / setters are not constructors.
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assert(!isConstructor(Object.getOwnPropertyDescriptor({get f(){}}, "f").get));
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assert(!isConstructor(Object.getOwnPropertyDescriptor({set f(x){}}, "f").set));
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// Arrow functions are not constructors.
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assert(!isConstructor(()=>{}));
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// Generators are not constructors.
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assert(!isConstructor(function*(){}));
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// Native builtins are not constructors.
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assert(!isConstructor(isConstructor));
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// https://tc39.github.io/ecma262/#sec-built-in-function-objects
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// Built-in function objects that are not identified as constructors do not
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// implement the [[Construct]] internal method unless otherwise specified in
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// the description of a particular function.
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assert(!isConstructor(Array.of));
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assert(!isConstructor(Object.getOwnPropertyDescriptor));
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assert(!isConstructor(Date.now));
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assert(!isConstructor(Math.cos));
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assert(!isConstructor(JSON.stringify));
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assert(!isConstructor(Promise.all));
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assert(!isConstructor(Symbol.for));
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assert(!isConstructor(Array.prototype.push));
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// Proxy and bound functions carry forward non-constructor-ness.
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assert(!isConstructor(new Proxy(Symbol, {})));
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assert(!isConstructor(new Proxy(Math.cos, {})));
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assert(!isConstructor(Symbol.bind(null)));
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assert(!isConstructor(Math.cos.bind(null)));
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