| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-weakmap.prototype.has |
| description: > |
| Throws TypeError if `this` doesn't have a [[WeakMapData]] internal slot. |
| info: | |
| WeakMap.prototype.has ( value ) |
| |
| ... |
| 3. If M does not have a [[WeakMapData]] internal slot, throw a TypeError |
| exception. |
| ... |
| ---*/ |
| |
| assert.throws(TypeError, function() { |
| WeakMap.prototype.has.call({}, {}, 1); |
| }); |
| |
| assert.throws(TypeError, function() { |
| var map = new WeakMap(); |
| map.has.call({}, {}, 1); |
| }); |