| // When the argument to WeakMap contains a key multiple times, the last value |
| // is retained. |
| |
| var k1 = {}; |
| var v1 = 42; |
| var k2 = {}; |
| var v2 = 43; |
| var k3 = {}; |
| var v3 = 44; |
| var k4 = {}; |
| |
| var wrong1 = 8; |
| var wrong2 = 9; |
| var wrong3 = 10; |
| |
| var arr = [[k1, wrong1], [k2, v2], [k3, wrong2], [k1, wrong3], [k3, v3], [k1, v1]]; |
| |
| var m = new WeakMap(arr); |
| |
| assertEq(m.has(k1), true); |
| assertEq(m.has(k2), true); |
| assertEq(m.has(k3), true); |
| assertEq(m.has(k4), false); |
| assertEq(m.get(k1), v1); |
| assertEq(m.get(k2), v2); |
| assertEq(m.get(k3), v3); |
| assertEq(m.get(k4), undefined); |