| // Map methods throw when passed a this-value that isn't a Map. |
| |
| load(libdir + "asserts.js"); |
| |
| function testcase(obj, fn) { |
| assertEq(typeof fn, "function"); |
| var args = Array.slice(arguments, 2); |
| assertThrowsInstanceOf(function () { fn.apply(obj, args); }, TypeError); |
| } |
| |
| var Map_size_getter = Object.getOwnPropertyDescriptor(Map.prototype, "size").get; |
| |
| function test(obj) { |
| testcase(obj, Map.prototype.get, "x"); |
| testcase(obj, Map.prototype.has, "x"); |
| testcase(obj, Map.prototype.set, "x", 1); |
| testcase(obj, Map.prototype.delete, "x"); |
| testcase(obj, Map.prototype.clear); |
| testcase(obj, Map.prototype.keys); |
| testcase(obj, Map.prototype.values); |
| testcase(obj, Map.prototype.entries); |
| testcase(obj, Map_size_getter); |
| } |
| |
| test(Map.prototype); |
| test(Object.create(new Map)); |
| test(new Set()); |
| test({}); |
| test(null); |
| test(undefined); |