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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-get-err.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-get-err.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-get-err.js b/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-get-err.js new file mode 100644 index 0000000000..e45bbd57ac --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/concat/is-concat-spreadable-get-err.js @@ -0,0 +1,40 @@ +// 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-array.prototype.concat +description: Error thrown when accessing `Symbol.isConcatSpreadable` property +info: | + 1. Let O be ToObject(this value). + 2. ReturnIfAbrupt(O). + 3. Let A be ArraySpeciesCreate(O, 0). + 4. ReturnIfAbrupt(A). + 5. Let n be 0. + 6. Let items be a List whose first element is O and whose subsequent + elements are, in left to right order, the arguments that were passed to + this function invocation. + 7. Repeat, while items is not empty + a. Remove the first element from items and let E be the value of the element. + b. Let spreadable be IsConcatSpreadable(E). + c. ReturnIfAbrupt(spreadable). + + ES6 22.1.3.1.1: Runtime Semantics: IsConcatSpreadable ( O ) + + 1. If Type(O) is not Object, return false. + 2. Let spreadable be Get(O, @@isConcatSpreadable). + 3. ReturnIfAbrupt(spreadable). +features: [Symbol.isConcatSpreadable] +---*/ + +var o = {}; + +Object.defineProperty(o, Symbol.isConcatSpreadable, { + get: function() { + throw new Test262Error(); + } +}); + +assert.throws(Test262Error, function() { + Array.prototype.concat.call(o); +}, 'Array.prototype.concat.call(o) throws a Test262Error exception'); + +reportCompare(0, 0); |