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Diffstat (limited to 'js/src/tests/test262/language/statements/with/binding-blocked-by-unscopables.js')
-rw-r--r-- | js/src/tests/test262/language/statements/with/binding-blocked-by-unscopables.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/with/binding-blocked-by-unscopables.js b/js/src/tests/test262/language/statements/with/binding-blocked-by-unscopables.js new file mode 100644 index 0000000000..977a98912d --- /dev/null +++ b/js/src/tests/test262/language/statements/with/binding-blocked-by-unscopables.js @@ -0,0 +1,54 @@ +// Copyright 2015 Mike Pennisi. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +es6id: 8.1.1.2.1 +description: > + True-coercing `Symbol.unscopables` properties block access to object environment record +info: | + [...] + 6. If the withEnvironment flag of envRec is false, return true. + 7. Let unscopables be Get(bindings, @@unscopables). + 8. ReturnIfAbrupt(unscopables). + 9. If Type(unscopables) is Object, then + a. Let blocked be ToBoolean(Get(unscopables, N)). + b. ReturnIfAbrupt(blocked). + c. If blocked is true, return false. + + ES6: 13.11.7 (The `with` Statement) Runtime Semantics: Evaluation + [...] + 6. Set the withEnvironment flag of newEnv’s EnvironmentRecord to true. + [...] +flags: [noStrict] +features: [Symbol.unscopables] +---*/ + +var x = 0; +var env = { x: 1 }; +env[Symbol.unscopables] = { x: true }; + +with (env) { + assert.sameValue(x, 0, 'literal `true` value'); +} + +env[Symbol.unscopables].x = 'string'; +with (env) { + assert.sameValue(x, 0, 'non-empty string values'); +} + +env[Symbol.unscopables].x = 86; +with (env) { + assert.sameValue(x, 0, 'non-zero number values'); +} + +env[Symbol.unscopables].x = {}; +with (env) { + assert.sameValue(x, 0, 'object values'); +} + +env[Symbol.unscopables].x = Symbol.unscopables; +with (env) { + assert.sameValue(x, 0, 'Symbol values'); +} + +reportCompare(0, 0); |