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Map.prototype.clear
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33
test/built-ins/Map/prototype/clear/clear-map.js
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test/built-ins/Map/prototype/clear/clear-map.js
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// 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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es6id: 23.1.3.1
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description: >
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Clears a Map.
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info: >
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Map.prototype.clear ( )
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...
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4. Let entries be the List that is the value of M’s [[MapData]] internal slot.
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5. Repeat for each Record {[[key]], [[value]]} p that is an element of
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entries,
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a. Set p.[[key]] to empty.
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b. Set p.[[value]] to empty.
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6. Return undefined.
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features: [Symbol]
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---*/
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var m1 = new Map([['foo', 'bar'], [1, 1]]);
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var m2 = new Map();
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var m3 = new Map();
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m2.set('foo', 'bar');
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m2.set(1,1);
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m2.set(Symbol('a'), Symbol('a'));
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m1.clear();
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m2.clear();
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m3.clear();
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assert.sameValue(m1.size, 0);
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assert.sameValue(m2.size, 0);
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assert.sameValue(m3.size, 0);
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21
test/built-ins/Map/prototype/clear/clear.js
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test/built-ins/Map/prototype/clear/clear.js
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// 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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es6id: 23.1.3.1
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description: >
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Map.prototype.clear ( )
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17 ECMAScript Standard Built-in Objects
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includes: [propertyHelper.js]
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---*/
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assert.sameValue(
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typeof Map.prototype.clear,
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'function',
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'typeof Map.prototype.clear is "function"'
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);
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verifyNotEnumerable(Map.prototype, 'clear');
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verifyWritable(Map.prototype, 'clear');
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verifyConfigurable(Map.prototype, 'clear');
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23
test/built-ins/Map/prototype/clear/context-is-not-map-object.js
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test/built-ins/Map/prototype/clear/context-is-not-map-object.js
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// 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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es6id: 23.1.3.1
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description: >
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Throws a TypeError if `this` does not have a [[MapData]] internal slot.
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info: >
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Map.prototype.clear ( )
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1. Let M be the this value.
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2. If Type(M) is not Object, throw a TypeError exception.
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3. If M does not have a [[MapData]] internal slot, throw a TypeError
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exception.
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...
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---*/
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assert.throws(TypeError, function() {
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Map.prototype.clear.call({});
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call([]);
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});
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38
test/built-ins/Map/prototype/clear/context-is-not-object.js
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test/built-ins/Map/prototype/clear/context-is-not-object.js
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// 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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es6id: 23.1.3.1
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description: >
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Throws a TypeError if `this` is not an Object.
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info: >
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Map.prototype.clear ( )
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1. Let M be the this value.
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2. If Type(M) is not Object, throw a TypeError exception.
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...
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features: [Symbol]
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---*/
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(1);
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(true);
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call('');
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(null);
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(undefined);
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});
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(Symbol());
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});
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20
test/built-ins/Map/prototype/clear/context-is-set-object-throws.js
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test/built-ins/Map/prototype/clear/context-is-set-object-throws.js
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// 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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es6id: 23.1.3.1
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description: >
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Throws a TypeError if `this` is a Set object.
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info: >
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Map.prototype.clear ( )
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1. Let M be the this value.
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2. If Type(M) is not Object, throw a TypeError exception.
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3. If M does not have a [[MapData]] internal slot, throw a TypeError
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exception.
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...
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features: [Set]
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---*/
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(new Set());
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});
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20
test/built-ins/Map/prototype/clear/context-is-weakmap-object-throws.js
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test/built-ins/Map/prototype/clear/context-is-weakmap-object-throws.js
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// 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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es6id: 23.1.3.1
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description: >
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Throws a TypeError if `this` is a WeakMap object.
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info: >
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Map.prototype.clear ( )
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1. Let M be the this value.
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2. If Type(M) is not Object, throw a TypeError exception.
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3. If M does not have a [[MapData]] internal slot, throw a TypeError
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exception.
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...
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features: [WeakMap]
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---*/
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assert.throws(TypeError, function() {
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Map.prototype.clear.call(new WeakMap());
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});
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22
test/built-ins/Map/prototype/clear/length.js
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test/built-ins/Map/prototype/clear/length.js
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// 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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es6id: 23.1.3.1
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description: >
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Map.prototype.clear.length value and descriptor.
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info: >
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Map.prototype.clear ( )
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17 ECMAScript Standard Built-in Objects
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includes: [propertyHelper.js]
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---*/
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assert.sameValue(
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Map.prototype.clear.length, 0,
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'The value of `Map.prototype.clear.length` is `0`'
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);
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verifyNotEnumerable(Map.prototype.clear, 'length');
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verifyNotWritable(Map.prototype.clear, 'length');
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verifyConfigurable(Map.prototype.clear, 'length');
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test/built-ins/Map/prototype/clear/map-data-list-is-preserved.js
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test/built-ins/Map/prototype/clear/map-data-list-is-preserved.js
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// 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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es6id: 23.1.3.1
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description: >
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The existing [[MapData]] List is preserved.
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info: >
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The existing [[MapData]] List is preserved because there may be existing
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MapIterator objects that are suspended midway through iterating over that
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List.
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Map.prototype.clear ( )
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...
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4. Let entries be the List that is the value of M’s [[MapData]] internal slot.
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5. Repeat for each Record {[[key]], [[value]]} p that is an element of
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entries,
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a. Set p.[[key]] to empty.
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b. Set p.[[value]] to empty.
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6. Return undefined.
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---*/
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var m = new Map([[1,1], [2,2], [3,3]]);
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var e = m.entries();
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e.next();
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m.clear();
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var n = e.next();
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assert.sameValue(n.value, undefined);
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assert.sameValue(n.done, true);
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test/built-ins/Map/prototype/clear/name.js
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test/built-ins/Map/prototype/clear/name.js
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// 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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es6id: 23.1.3.1
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description: >
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Map.prototype.entries.name value and descriptor.
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info: >
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Map.prototype.clear ( )
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17 ECMAScript Standard Built-in Objects
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includes: [propertyHelper.js]
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---*/
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assert.sameValue(
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Map.prototype.clear.name, 'clear',
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'The value of `Map.prototype.clear.name` is `"clear"`'
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);
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verifyNotEnumerable(Map.prototype.clear, 'name');
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verifyNotWritable(Map.prototype.clear, 'name');
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verifyConfigurable(Map.prototype.clear, 'name');
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test/built-ins/Map/prototype/clear/returns-undefined.js
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test/built-ins/Map/prototype/clear/returns-undefined.js
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// 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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es6id: 23.1.3.1
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description: >
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Returns undefined.
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info: >
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Map.prototype.clear ( )
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...
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4. Let entries be the List that is the value of M’s [[MapData]] internal slot.
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5. Repeat for each Record {[[key]], [[value]]} p that is an element of
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entries,
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a. Set p.[[key]] to empty.
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b. Set p.[[value]] to empty.
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6. Return undefined.
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---*/
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var m1 = new Map([['foo', 'bar'], [1, 1]]);
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assert.sameValue(m1.clear(), undefined, 'clears a map and returns undefined');
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assert.sameValue(m1.clear(), undefined, 'returns undefined on an empty map');
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