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There are many existing tests for WeakMap, WeakSet, WeakRef, and FinalizationRegistry using Objects as weak values. For symbols-as-weakmap- keys, we'll want to write tests that parallel these for Symbol keys. Change the descriptions and filenames of these tests to describe their new scope of only Object weak values. Update the front matter of these tests while we're at it, to reflect the changes to the spec text that the symbols-as-weakmap-keys brings in. (In some cases, remove irrelevant bits of the front matter.) See: #2850
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-weakmap-iterable
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description: >
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Returns the new WeakMap adding entries from the iterable parameter, with
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Object keys.
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info: |
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WeakMap ( [ _iterable_ ] )
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5. Let _adder_ be ? Get(_map_, *"set"*).
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6. Return ? AddEntriesFromIterable(_map_, _iterable_, _adder_).
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AddEntriesFromIterable:
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3. Repeat,
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i. Let _status_ be Completion(Call(_adder_, _target_, « _k_, _v_ »)).
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WeakMap.prototype.set( _key_, _value_ ):
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6. Let _p_ be the Record {[[Key]]: _key_, [[Value]]: _value_}.
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7. Append _p_ as the last element of _entries_.
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features: [WeakMap]
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---*/
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var first = {};
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var second = {};
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var results = [];
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var set = WeakMap.prototype.set;
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WeakMap.prototype.set = function(key, value) {
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results.push({
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_this: this,
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key: key,
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value: value
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});
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return set.call(this, key, value);
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};
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var map = new WeakMap([
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[first, 42],
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[second, 43]
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]);
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assert.sameValue(results.length, 2, 'Called WeakMap#set for each object');
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assert.sameValue(results[0].key, first, 'Adds object in order - first key');
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assert.sameValue(results[0].value, 42, 'Adds object in order - first value');
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assert.sameValue(results[0]._this, map, 'Adds object in order - this');
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assert.sameValue(results[1].key, second, 'Adds object in order - second key');
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assert.sameValue(results[1].value, 43, 'Adds object in order - second value');
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assert.sameValue(results[1]._this, map, 'Adds object in order - this');
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