| // Map surfaces |
| |
| load(libdir + "iteration.js"); |
| |
| var desc = Object.getOwnPropertyDescriptor(this, "Map"); |
| assertEq(desc.enumerable, false); |
| assertEq(desc.configurable, true); |
| assertEq(desc.writable, true); |
| |
| assertEq(typeof Map, 'function'); |
| assertEq(Object.keys(Map).length, 0); |
| assertEq(Map.length, 0); |
| assertEq(Map.name, "Map"); |
| |
| assertEq(Object.getPrototypeOf(Map.prototype), Object.prototype); |
| assertEq("toStringTag" in Symbol, false, |
| "if this fails, congratulations! implement " + |
| "Map.prototype[Symbol.toStringTag] = 'Map' in SpiderMonkey and make " + |
| "the next test check for '[object Map]' again"); |
| assertEq(Object.prototype.toString.call(Map.prototype), "[object Object]"); |
| assertEq(Object.prototype.toString.call(new Map()), "[object Map]"); |
| assertEq(Object.keys(Map.prototype).join(), ""); |
| assertEq(Map.prototype.constructor, Map); |
| |
| function checkMethod(name, arity) { |
| var desc = Object.getOwnPropertyDescriptor(Map.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("get", 1); |
| checkMethod("has", 1); |
| checkMethod("set", 2); |
| checkMethod("delete", 1); |
| checkMethod("keys", 0); |
| checkMethod("values", 0); |
| checkMethod("entries", 0); |
| |
| var desc = Object.getOwnPropertyDescriptor(Map.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); |
| |
| // Map.prototype[@@iterator] and .entries are the same function object. |
| assertEq(Map.prototype[Symbol.iterator], Map.prototype.entries); |