tor-browser

The Tor Browser
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after-same-line-static-async-gen-computed-symbol-names.js (3156B)

      1 // |reftest| async
      2 // This file was procedurally generated from the following sources:
      3 // - src/class-elements/computed-symbol-names.case
      4 // - src/class-elements/productions/cls-decl-after-same-line-static-async-gen.template
      5 /*---
      6 description: Computed property symbol names (field definitions after a static async generator in the same line)
      7 esid: prod-FieldDefinition
      8 features: [class-fields-public, Symbol, computed-property-names, class, async-iteration]
      9 flags: [generated, async]
     10 includes: [propertyHelper.js]
     11 info: |
     12    ClassElement:
     13      ...
     14      FieldDefinition ;
     15 
     16    FieldDefinition:
     17      ClassElementName Initializer_opt
     18 
     19    ClassElementName:
     20      PropertyName
     21 
     22 ---*/
     23 var x = Symbol();
     24 var y = Symbol();
     25 
     26 
     27 
     28 class C {
     29  static async *m() { return 42; } [x]; [y] = 42;
     30  
     31 }
     32 
     33 var c = new C();
     34 
     35 assert(
     36  !Object.prototype.hasOwnProperty.call(c, "m"),
     37  "m doesn't appear as an own property on the C instance"
     38 );
     39 assert(
     40  !Object.prototype.hasOwnProperty.call(C.prototype, "m"),
     41  "m doesn't appear as an own property on the C prototype"
     42 );
     43 
     44 verifyProperty(C, "m", {
     45  enumerable: false,
     46  configurable: true,
     47  writable: true,
     48 }, {restore: true});
     49 
     50 C.m().next().then(function(v) {
     51  assert.sameValue(v.value, 42);
     52  assert.sameValue(v.done, true);
     53 
     54  function assertions() {
     55    // Cover $DONE handler for async cases.
     56    function $DONE(error) {
     57      if (error) {
     58        throw new Test262Error('Test262:AsyncTestFailure')
     59      }
     60    }
     61    assert(
     62      !Object.prototype.hasOwnProperty.call(C.prototype, x),
     63      "Symbol x doesn't appear as an own property on C prototype"
     64    );
     65    assert(
     66      !Object.prototype.hasOwnProperty.call(C, x),
     67      "Symbol x doesn't appear as an own property on C constructor"
     68    );
     69 
     70    verifyProperty(c, x, {
     71      value: undefined,
     72      enumerable: true,
     73      writable: true,
     74      configurable: true
     75    });
     76 
     77    assert(
     78      !Object.prototype.hasOwnProperty.call(C.prototype, y),
     79      "Symbol y doesn't appear as an own property on C prototype"
     80    );
     81    assert(
     82      !Object.prototype.hasOwnProperty.call(C, y),
     83      "Symbol y doesn't appear as an own property on C constructor"
     84    );
     85 
     86    verifyProperty(c, y, {
     87      value: 42,
     88      enumerable: true,
     89      writable: true,
     90      configurable: true
     91    });
     92 
     93    assert(
     94      !Object.prototype.hasOwnProperty.call(C.prototype, "x"),
     95      "x doesn't appear as an own property on C prototype"
     96    );
     97    assert(
     98      !Object.prototype.hasOwnProperty.call(C, "x"),
     99      "x doesn't appear as an own property on C constructor"
    100    );
    101    assert(
    102      !Object.prototype.hasOwnProperty.call(c, "x"),
    103      "x doesn't appear as an own property on C instance"
    104    );
    105 
    106    assert(
    107      !Object.prototype.hasOwnProperty.call(C.prototype, "y"),
    108      "y doesn't appear as an own property on C prototype"
    109    );
    110    assert(
    111      !Object.prototype.hasOwnProperty.call(C, "y"),
    112      "y doesn't appear as an own property on C constructor"
    113    );
    114    assert(
    115      !Object.prototype.hasOwnProperty.call(c, "y"),
    116      "y doesn't appear as an own property on C instance"
    117    );
    118  }
    119 
    120  return Promise.resolve(assertions());
    121 }).then($DONE, $DONE);