yield-spread-arr-single.js

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// This file was procedurally generated from the following sources:

// - src/generators/yield-spread-arr-single.case

// - src/generators/default/declaration.template

/*---

description: Use yield value in a array spread position (Generator Function declaration)

esid: prod-GeneratorDeclaration

features: [generators]

flags: [generated]

info: |

    14.4 Generator Function Definitions

    GeneratorDeclaration :

      function * BindingIdentifier ( FormalParameters ) { GeneratorBody }

    Array Initializer

    SpreadElement[Yield, Await]:

      ...AssignmentExpression[+In, ?Yield, ?Await]

---*/

var arr = ['a', 'b', 'c'];

var callCount = 0;

function *gen() {

  callCount += 1;

  yield [...yield];

var iter = gen();

iter.next(false);

var item = iter.next(arr);

var value = item.value;

assert.notSameValue(value, arr, 'value is a new array');

assert(Array.isArray(value), 'value is an Array exotic object');

assert.sameValue(value.length, 3)

assert.sameValue(value[0], 'a');

assert.sameValue(value[1], 'b');

assert.sameValue(value[2], 'c');

assert.sameValue(item.done, false);

assert.sameValue(callCount, 1);

reportCompare(0, 0);