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52 lines
1.8 KiB
JavaScript
52 lines
1.8 KiB
JavaScript
// Set surfaces
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load(libdir + "iteration.js");
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var desc = Object.getOwnPropertyDescriptor(this, "Set");
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assertEq(desc.enumerable, false);
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assertEq(desc.configurable, true);
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assertEq(desc.writable, true);
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assertEq(typeof Set, 'function');
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assertEq(Object.keys(Set).length, 0);
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assertEq(Set.length, 0);
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assertEq(Set.name, "Set");
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assertEq(Object.getPrototypeOf(Set.prototype), Object.prototype);
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assertEq("toStringTag" in Symbol, false,
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"if this fails, congratulations! implement " +
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"Set.prototype[Symbol.toStringTag] = 'Set' in SpiderMonkey and make " +
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"the next test check for '[object Set]' again");
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assertEq(Object.prototype.toString.call(Set.prototype), "[object Object]");
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assertEq(Object.prototype.toString.call(new Set()), "[object Set]");
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assertEq(Object.keys(Set.prototype).join(), "");
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assertEq(Set.prototype.constructor, Set);
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function checkMethod(name, arity) {
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var desc = Object.getOwnPropertyDescriptor(Set.prototype, name);
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assertEq(desc.enumerable, false);
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assertEq(desc.configurable, true);
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assertEq(desc.writable, true);
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assertEq(typeof desc.value, 'function');
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assertEq(desc.value.name, name);
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assertEq(desc.value.length, arity);
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}
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checkMethod("has", 1);
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checkMethod("add", 1);
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checkMethod("delete", 1);
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checkMethod("values", 0);
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checkMethod("entries", 0);
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var desc = Object.getOwnPropertyDescriptor(Set.prototype, "size");
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assertEq(desc.enumerable, false);
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assertEq(desc.configurable, true);
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assertEq(typeof desc.get, 'function');
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assertEq(desc.get.length, 0);
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assertEq(desc.set, undefined);
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checkMethod("clear", 0);
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// Set.prototype.keys, .values, and .iterator are the same function object
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assertEq(Set.prototype.keys, Set.prototype.values);
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assertEq(Set.prototype[Symbol.iterator], Set.prototype.values);
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