formal-parameters.js

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// Copyright (C) 2013 the V8 project authors. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

es6id: 25.2

description: >

    Formal parameters are valid yield expression operands.

features: [generators]

---*/

function* g(a, b, c, d) {

  yield a;

  yield b;

  yield c;

  yield d;

var iter = g(23, 45, 33);

var result;

result = iter.next();

assert.sameValue(result.value, 23, 'First result `value`');

assert.sameValue(result.done, false, 'First result `done` flag');

result = iter.next();

assert.sameValue(result.value, 45, 'Second result `value`');

assert.sameValue(result.done, false, 'Second result `done` flag');

result = iter.next();

assert.sameValue(result.value, 33, 'Third result `value`');

assert.sameValue(result.done, false, 'Third result `done` flag');

result = iter.next();

assert.sameValue(

  result.value, undefined, 'Fourth result `value` (unspecified parameter)'

);

assert.sameValue(

  result.done, false, 'Fourth result `done` flag (unspecified parameter)'

);

result = iter.next();

assert.sameValue(result.value, undefined, 'Final result `value`');

assert.sameValue(result.done, true, 'Final result `done` flag');

reportCompare(0, 0);