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53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
QUnit.test('WeakMap#deleteAll', assert => {
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const { deleteAll } = WeakMap.prototype;
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assert.isFunction(deleteAll);
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assert.arity(deleteAll, 0);
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assert.name(deleteAll, 'deleteAll');
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assert.looksNative(deleteAll);
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assert.nonEnumerable(WeakMap.prototype, 'deleteAll');
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const a = [];
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const b = [];
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const c = [];
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const d = [];
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const e = [];
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let map = new WeakMap([[a, 1], [b, 2], [c, 3]]);
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assert.true(map.deleteAll(a, b));
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assert.false(map.has(a));
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assert.false(map.has(b));
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assert.true(map.has(c));
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assert.false(map.has(d));
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assert.false(map.has(e));
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map = new WeakMap([[a, 1], [b, 2], [c, 3]]);
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assert.false(map.deleteAll(c, d));
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assert.true(map.has(a));
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assert.true(map.has(b));
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assert.false(map.has(c));
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assert.false(map.has(d));
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assert.false(map.has(e));
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map = new WeakMap([[a, 1], [b, 2], [c, 3]]);
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assert.false(map.deleteAll(d, e));
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assert.true(map.has(a));
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assert.true(map.has(b));
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assert.true(map.has(c));
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assert.false(map.has(d));
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assert.false(map.has(e));
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map = new WeakMap([[a, 1], [b, 2], [c, 3]]);
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assert.true(map.deleteAll());
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assert.true(map.has(a));
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assert.true(map.has(b));
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assert.true(map.has(c));
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assert.false(map.has(d));
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assert.false(map.has(e));
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assert.throws(() => deleteAll.call({ delete() { /* empty */ } }, a, b, c));
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assert.throws(() => deleteAll.call({}, a, b, c), TypeError);
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assert.throws(() => deleteAll.call(undefined, a, b, c), TypeError);
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assert.throws(() => deleteAll.call(null, a, b, c), TypeError);
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});
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