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Diffstat (limited to 'js/src/tests/test262/built-ins/Map/map-no-iterable.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Map/map-no-iterable.js | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Map/map-no-iterable.js b/js/src/tests/test262/built-ins/Map/map-no-iterable.js new file mode 100644 index 0000000000..e1793ef578 --- /dev/null +++ b/js/src/tests/test262/built-ins/Map/map-no-iterable.js @@ -0,0 +1,34 @@ +// 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-map-iterable +description: > + Returns the new Map object with the new empty list if the iterable argument is + undefined. +info: | + Map ( [ iterable ] ) + + ... + 2. Let map be OrdinaryCreateFromConstructor(NewTarget, "%MapPrototype%", + «[[MapData]]» ). + ... + 4. Map map’s [[MapData]] internal slot to a new empty List. + 5. If iterable is not present, let iterable be undefined. + 6. If iterable is either undefined or null, let iter be undefined. + ... + 8. If iter is undefined, return map. +---*/ + +var m1 = new Map(); +var m2 = new Map(undefined); +var m3 = new Map(null); + +assert.sameValue(m1.size, 0, 'The value of `new Map().size` is `0`'); +assert.sameValue(m2.size, 0, 'The value of `new Map(undefined).size` is `0`'); +assert.sameValue(m3.size, 0, 'The value of `new Map(null).size` is `0`'); + +assert(m1 instanceof Map); +assert(m2 instanceof Map); +assert(m3 instanceof Map); + +reportCompare(0, 0); |