tor-browser

The Tor Browser
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for-await-resolution-and-error-agen-yield.js (2203B)

      1 // |reftest| async
      2 // Copyright (C) 2018 Leo Balter. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 /*---
      5 description: >
      6    Resolve multiple imports through a for await loop in an async generator yielding imports
      7 esid: sec-finishdynamicimport
      8 info: |
      9    Runtime Semantics: FinishDynamicImport ( referencingScriptOrModule, specifier, promiseCapability, completion )
     10 
     11    2. Otherwise,
     12        a. Assert: completion is a normal completion and completion.[[Value]] is undefined.
     13        b. Let moduleRecord be ! HostResolveImportedModule(referencingScriptOrModule, specifier).
     14        c. Assert: Evaluate has already been invoked on moduleRecord and successfully completed.
     15        d. Let namespace be GetModuleNamespace(moduleRecord).
     16        ...
     17        f. Otherwise, perform ! Call(promiseCapability.[[Resolve]], undefined, « namespace.[[Value]] »).
     18 flags: [async]
     19 features: [dynamic-import, async-iteration]
     20 includes: [asyncHelpers.js]
     21 ---*/
     22 
     23 async function * agen1() {
     24    yield import('./for-await-resolution-and-error-a_FIXTURE.js');
     25    yield import('./for-await-resolution-and-error-b_FIXTURE.js');
     26    yield import('./for-await-resolution-and-error-poisoned_FIXTURE.js');
     27 }
     28 
     29 async function * agen2() {
     30    yield await import('./for-await-resolution-and-error-a_FIXTURE.js');
     31    yield await import('./for-await-resolution-and-error-b_FIXTURE.js');
     32    yield await import('./for-await-resolution-and-error-poisoned_FIXTURE.js');
     33 }
     34 
     35 var aiter1 = agen1();
     36 var aiter2 = agen2();
     37 
     38 async function fn() {
     39    var a = aiter1.next();
     40    var b = aiter1.next();
     41    var c = aiter1.next();
     42    var d = aiter2.next();
     43    var e = aiter2.next();
     44    var f = aiter2.next();
     45 
     46    assert.sameValue((await a).value.x, 42, 'a');
     47    assert.sameValue((await b).value.x, 39, 'b');
     48 
     49    var error;
     50    try {
     51        await c;
     52    } catch (err) {
     53        error = err;
     54    }
     55 
     56    assert.sameValue(error, 'foo', 'c');
     57 
     58    assert.sameValue((await d).value.x, 42, 'd');
     59    assert.sameValue((await e).value.x, 39, 'e');
     60 
     61    error = null;
     62    try {
     63        await f;
     64    } catch (err) {
     65        error = err;
     66    }
     67 
     68    assert.sameValue(error, 'foo', 'f');
     69 }
     70 
     71 asyncTest(fn);