mirror of
https://github.com/tc39/test262.git
synced 2025-10-31 03:34:08 +01:00
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
/*---
|
|
esid: sec-generator-function-definitions
|
|
es6id: 14.4
|
|
description: YieldExpression may be followed by a TemplateMiddle construct
|
|
info: |
|
|
The syntactic context immediately following yield requires use of the
|
|
InputElementRegExpOrTemplateTail lexical goal.
|
|
features: [generators]
|
|
---*/
|
|
|
|
var complete = false;
|
|
var iter, iterResult, str;
|
|
function* g() {
|
|
str = `1${ yield }3${ 4 }5`;
|
|
complete = true;
|
|
}
|
|
|
|
iter = g();
|
|
|
|
assert.sameValue(complete, false, 'generator initially paused');
|
|
assert.sameValue(str, undefined, 'first statement not executed');
|
|
|
|
iterResult = iter.next();
|
|
|
|
assert.sameValue(complete, false, 'generator paused following expression');
|
|
assert.sameValue(str, undefined, 'first statement not executed');
|
|
|
|
assert.sameValue(iterResult.done, false, 'iteration not complete');
|
|
assert.sameValue(iterResult.value, undefined, 'first iterated value');
|
|
|
|
iterResult = iter.next(2);
|
|
|
|
assert.sameValue(str, '12345', 'YieldExpression value');
|
|
assert.sameValue(complete, true, 'generator correctly re-started');
|
|
assert.sameValue(iterResult.done, true, 'iteration complete');
|
|
assert.sameValue(iterResult.value, undefined, 'second iterated value');
|