Map.prototype.size

test/built-ins/Map/prototype/size/does-not-have-mapdata-internal-slot-set.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Throws a TypeError if `this` is a Set object.
+info: >
+  Map.prototype.set ( key , value )
+
+  ...
+  3. If M does not have a [[MapData]] internal slot, throw a TypeError
+  exception.
+  ...
+features: [Set]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+var map = new Map();
+
+// Does not throw
+descriptor.get.call(map);
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(new Set());
+});

test/built-ins/Map/prototype/size/does-not-have-mapdata-internal-slot-weakmap.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.9
+description: >
+  Throws a TypeError if `this` is a WeakMap object.
+info: >
+  get Map.prototype.size
+
+  1. Let M be the this value.
+  2. If Type(M) is not Object, throw a TypeError exception.
+  3. If M does not have a [[MapData]] internal slot, throw a TypeError
+  exception.
+  ...
+features: [WeakMap]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+var map = new Map();
+
+// Does not throw
+descriptor.get.call(map);
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(new WeakMap());
+});

test/built-ins/Map/prototype/size/does-not-have-mapdata-internal-slot.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.9
+description: >
+  Throws a TypeError if `this` object does not have a [[MapData]] internal slot.
+info: >
+  get Map.prototype.size
+
+  1. Let M be the this value.
+  2. If Type(M) is not Object, throw a TypeError exception.
+  3. If M does not have a [[MapData]] internal slot, throw a TypeError
+  exception.
+  ...
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+var map = new Map();
+
+// Does not throw
+descriptor.get.call(map);
+
+assert.throws(TypeError, function() {
+  descriptor.get.call([]);
+});

test/built-ins/Map/prototype/size/length.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Map.prototype.size.length value and descriptor.
+info: >
+  get Map.prototype.size
+
+  17 ECMAScript Standard Built-in Objects
+includes: [propertyHelper.js]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+assert.sameValue(
+  descriptor.get.length, 0,
+  'The value of `Map.prototype.size.length` is `0`'
+);
+
+verifyNotEnumerable(descriptor.get, 'length');
+verifyNotWritable(descriptor.get, 'length');
+verifyConfigurable(descriptor.get, 'length');

test/built-ins/Map/prototype/size/name.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Map.prototype.size.name value and descriptor.
+info: >
+  get Map.prototype.size
+
+  17 ECMAScript Standard Built-in Objects
+
+  Functions that are specified as get or set accessor functions of built-in
+  properties have "get " or "set " prepended to the property name string.
+
+includes: [propertyHelper.js]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+assert.sameValue(descriptor.get.name,
+  'get size',
+  'The value of `descriptor.get.name` is `get size`'
+);
+
+verifyNotEnumerable(descriptor.get, 'name');
+verifyNotWritable(descriptor.get, 'name');
+verifyConfigurable(descriptor.get, 'name');

test/built-ins/Map/prototype/size/returns-count-of-present-values-before-after-set-clear.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Returns count of present values before and after using `set` and `clear`.
+info: >
+  get Map.prototype.size
+
+  5. Let count be 0.
+  6. For each Record {[[key]], [[value]]} p that is an element of entries
+    a. If p.[[key]] is not empty, set count to count+1.
+---*/
+
+var map = new Map();
+
+assert.sameValue(map.size, 0, 'The value of `map.size` is `0`');
+
+map.set(1, 1);
+map.set(2, 2);
+assert.sameValue(
+  map.size, 2,
+  'The value of `map.size` is `2`'
+);
+
+map.clear();
+assert.sameValue(
+  map.size, 0,
+  'The value of `map.size` is `0`, after executing `map.clear()`'
+);

test/built-ins/Map/prototype/size/returns-count-of-present-values-before-after-set-delete.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Returns count of present values before and after using `set` and `delete`.
+info: >
+  get Map.prototype.size
+
+  5. Let count be 0.
+  6. For each Record {[[key]], [[value]]} p that is an element of entries
+    a. If p.[[key]] is not empty, set count to count+1.
+---*/
+
+var map = new Map();
+
+assert.sameValue(map.size, 0, 'The value of `map.size` is `0`');
+
+map.set(1, 1);
+assert.sameValue(
+  map.size, 1,
+  'The value of `map.size` is `1`, after executing `map.set(1, 1)`'
+);
+
+map.delete(1);
+assert.sameValue(
+  map.size, 0,
+  'The value of `map.size` is `0`, after executing `map.delete(1)`'
+);

test/built-ins/Map/prototype/size/returns-count-of-present-values-by-insertion.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Returns count of present values inserted with set.
+info: >
+  get Map.prototype.size
+
+  5. Let count be 0.
+  6. For each Record {[[key]], [[value]]} p that is an element of entries
+    a. If p.[[key]] is not empty, set count to count+1.
+features: [Symbol]
+---*/
+
+var map = new Map();
+
+map.set(0, undefined);
+map.set(undefined, undefined);
+map.set(false, undefined);
+map.set(NaN, undefined);
+map.set(null, undefined);
+map.set('', undefined);
+map.set(Symbol(), undefined);
+
+assert.sameValue(map.size, 7, 'The value of `map.size` is `7`');

test/built-ins/Map/prototype/size/returns-count-of-present-values-by-iterable.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Returns count of present values inserted via iterable argument.
+info: >
+  get Map.prototype.size
+
+  5. Let count be 0.
+  6. For each Record {[[key]], [[value]]} p that is an element of entries
+    a. If p.[[key]] is not empty, set count to count+1.
+features: [Symbol]
+---*/
+
+var map = new Map([
+  [0, undefined],
+  [undefined, undefined],
+  [false, undefined],
+  [NaN, undefined],
+  [null, undefined],
+  ['', undefined],
+  [Symbol(), undefined],
+]);
+
+assert.sameValue(map.size, 7, 'The value of `map.size` is `7`');

test/built-ins/Map/prototype/size/size.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Property type and descriptor.
+info: >
+  get Map.prototype.size
+
+  17 ECMAScript Standard Built-in Objects
+
+includes: [propertyHelper.js]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+assert.sameValue(
+  typeof descriptor.get,
+  'function',
+  'typeof descriptor.get is function'
+);
+assert.sameValue(
+  typeof descriptor.set,
+  'undefined',
+  'typeof descriptor.set is undefined'
+);
+
+verifyNotEnumerable(Map.prototype, 'size');
+verifyConfigurable(Map.prototype, 'size');

test/built-ins/Map/prototype/size/this-not-object-throw.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 23.1.3.10
+description: >
+  Throws a TypeError if `this` is not an Object.
+info: >
+  get Map.prototype.size
+
+  1. Let M be the this value.
+  2. If Type(M) is not Object, throw a TypeError exception.
+  3. If M does not have a [[MapData]] internal slot, throw a TypeError
+  exception.
+  ...
+
+includes: [propertyHelper.js]
+---*/
+
+var descriptor = Object.getOwnPropertyDescriptor(Map.prototype, 'size');
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(1);
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(false);
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(1);
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call('');
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(undefined);
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(null);
+});
+
+assert.throws(TypeError, function() {
+  descriptor.get.call(Symbol());
+});