diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/ownKeys/return-duplicate-symbol-entries-throws.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/ownKeys/return-duplicate-symbol-entries-throws.js | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/ownKeys/return-duplicate-symbol-entries-throws.js b/js/src/tests/test262/built-ins/Proxy/ownKeys/return-duplicate-symbol-entries-throws.js new file mode 100644 index 0000000000..09d2697890 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/ownKeys/return-duplicate-symbol-entries-throws.js @@ -0,0 +1,26 @@ +// Copyright (C) 2017 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys +description: > + The returned list must not contain any duplicate entries. +info: | + [[OwnPropertyKeys]] ( ) + + ... + 9. If trapResult contains any duplicate entries, throw a TypeError exception. +features: [Proxy, Symbol] +---*/ + +var s = Symbol(); +var p = new Proxy({}, { + ownKeys: function() { + return [s, s]; + } +}); + +assert.throws(TypeError, function() { + Object.keys(p); +}); + +reportCompare(0, 0); |