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