tor-browser

The Tor Browser
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async-gen-meth-ary-ptrn-rest-id-direct.js (1598B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/dstr-binding/ary-ptrn-rest-id-direct.case
      4 // - src/dstr-binding/default/async-gen-meth.template
      5 /*---
      6 description: Lone rest element (direct binding) (async generator method)
      7 esid: sec-asyncgenerator-definitions-propertydefinitionevaluation
      8 features: [async-iteration]
      9 flags: [generated, async]
     10 includes: [compareArray.js]
     11 info: |
     12    AsyncGeneratorMethod :
     13        async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
     14            { AsyncGeneratorBody }
     15 
     16    1. Let propKey be the result of evaluating PropertyName.
     17    2. ReturnIfAbrupt(propKey).
     18    3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
     19       Otherwise let strict be false.
     20    4. Let scope be the running execution context's LexicalEnvironment.
     21    5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
     22       AsyncGeneratorBody, scope, strict).
     23    [...]
     24 
     25 
     26    Runtime Semantics: IteratorBindingInitialization
     27 
     28    BindingRestElement : ... BindingIdentifier
     29 
     30    [...]
     31    2. Let A be ! ArrayCreate(0).
     32    3. Let n be 0.
     33    4. Repeat,
     34        [...]
     35        f. Perform ! CreateDataPropertyOrThrow(A, ! ToString(n), nextValue).
     36        g. Set n to n + 1.
     37 
     38 ---*/
     39 
     40 
     41 var callCount = 0;
     42 var obj = {
     43  async *method([...x]) {
     44    assert(Array.isArray(x));
     45    assert.compareArray(x, [1]);
     46    callCount = callCount + 1;
     47  }
     48 };
     49 
     50 obj.method([1]).next().then(() => {
     51    assert.sameValue(callCount, 1, 'invoked exactly once');
     52 }).then($DONE, $DONE);