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Diffstat (limited to 'js/src/tests/test262/built-ins/RegExp/prototype/Symbol.match/builtin-success-g-set-lastindex-err.js')
-rw-r--r-- | js/src/tests/test262/built-ins/RegExp/prototype/Symbol.match/builtin-success-g-set-lastindex-err.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.match/builtin-success-g-set-lastindex-err.js b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.match/builtin-success-g-set-lastindex-err.js new file mode 100644 index 0000000000..69a5517173 --- /dev/null +++ b/js/src/tests/test262/built-ins/RegExp/prototype/Symbol.match/builtin-success-g-set-lastindex-err.js @@ -0,0 +1,54 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: > + Behavior when error thrown while setting `lastIndex` after a "global" match + success +es6id: 21.2.5.6 +info: | + [...] + 5. Let global be ToBoolean(Get(rx, "global")). + 6. ReturnIfAbrupt(global). + 7. If global is false, then + a. Return RegExpExec(rx, S). + + 21.2.5.2.1 Runtime Semantics: RegExpExec ( R, S ) + + [...] + 7. Return RegExpBuiltinExec(R, S). + + 21.2.5.2.2 Runtime Semantics: RegExpBuiltinExec ( R, S ) + + [...] + 18. If global is true or sticky is true, + a. Let setStatus be Set(R, "lastIndex", e, true). + b. ReturnIfAbrupt(setStatus). +features: [Symbol.match] +---*/ + +var r = /b/g; +var callCount = 0; + +// Because this test speicifically concerns the behavior when setting +// "lastIndex" following a match, care must be taken to avoid triggering a +// similar error when `lastIndex` is initially set to `0` earlier in the +// algorithm. +// +// Because the `lastIndex` property is non-configurable, this cannot be +// accomplished with a simple "set" accessor function. +// +// Defer disabling modification of `lastIndex` until after the "this" value's +// `exec` property has been accessed, ensuring that the resultant abrupt +// completion originates from the second property modification. +Object.defineProperty(r, 'exec', { + get: function() { + Object.defineProperty(r, 'lastIndex', { writable: false }); + } +}); + +assert.throws(TypeError, function() { + r[Symbol.match]('abc'); +}); + +reportCompare(0, 0); |