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-rw-r--r--js/src/tests/test262/language/statements/for-of/generator-close-via-break.js49
1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/generator-close-via-break.js b/js/src/tests/test262/language/statements/for-of/generator-close-via-break.js
new file mode 100644
index 0000000000..7548f0fccd
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+++ b/js/src/tests/test262/language/statements/for-of/generator-close-via-break.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 13.6.4.13
+description: >
+ Generators should be closed via their `return` method when iteration is
+ interrupted via a `break` statement.
+features: [generators]
+---*/
+
+var startedCount = 0;
+var finallyCount = 0;
+var iterationCount = 0;
+function* values() {
+ startedCount += 1;
+ try {
+ yield;
+ throw new Test262Error('This code is unreachable (within `try` block)');
+ } finally {
+ finallyCount += 1;
+ }
+ throw new Test262Error('This code is unreachable (following `try` statement)');
+}
+var iterable = values();
+
+assert.sameValue(
+ startedCount, 0, 'Generator is initialized in suspended state'
+);
+
+for (var x of iterable) {
+ assert.sameValue(
+ startedCount, 1, 'Generator executes prior to first iteration'
+ );
+ assert.sameValue(
+ finallyCount, 0, 'Generator is paused during first iteration'
+ );
+ iterationCount += 1;
+ break;
+}
+
+assert.sameValue(
+ startedCount, 1, 'Generator does not restart following interruption'
+);
+assert.sameValue(iterationCount, 1, 'A single iteration occurs');
+assert.sameValue(
+ finallyCount, 1, 'Generator is closed after `break` statement'
+);
+
+reportCompare(0, 0);