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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/GeneratorPrototype/return/from-state-executing.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/GeneratorPrototype/return/from-state-executing.js b/js/src/tests/test262/built-ins/GeneratorPrototype/return/from-state-executing.js new file mode 100644 index 0000000000..62827d5ad6 --- /dev/null +++ b/js/src/tests/test262/built-ins/GeneratorPrototype/return/from-state-executing.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. +/*--- +esid: sec-generatorvalidate +description: > + A TypeError should be thrown if the generator is in the "executing" state, + and the generator should be marked as "completed" +info: | + 25.3.3.1 GeneratorStart + + [...] + 4. Set the code evaluation state of genContext such that when evaluation is + resumed for that execution context the following steps will be performed: + a. Let result be the result of evaluating generatorBody. + b. Assert: If we return here, the generator either threw an exception or + performed either an implicit or explicit return. + c. Remove genContext from the execution context stack and restore the + execution context that is at the top of the execution context stack as + the running execution context. + d. Set generator.[[GeneratorState]] to "completed". + [...] + + 25.3.3.4 GeneratorResumeAbrupt + + 1. Let state be ? GeneratorValidate(generator). + + 25.3.3.2 GeneratorValidate + + 1. If Type(generator) is not Object, throw a TypeError exception. + 2. If generator does not have a [[GeneratorState]] internal slot, throw a + TypeError exception. + 3. Assert: generator also has a [[GeneratorContext]] internal slot. + 4. Let state be generator.[[GeneratorState]]. + 5. If state is "executing", throw a TypeError exception. +features: [generators] +---*/ + +var iter, result; +function* g() { + iter.return(42); +} + +iter = g(); +assert.throws(TypeError, function() { + iter.next(); +}); + +result = iter.next(); + +assert.sameValue(typeof result, 'object'); +assert.sameValue(result.value, undefined); +assert.sameValue(result.done, true); + +reportCompare(0, 0); |