diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/async-generator/dstr/obj-ptrn-prop-id-init-skipped.js')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/dstr/obj-ptrn-prop-id-init-skipped.js | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/dstr/obj-ptrn-prop-id-init-skipped.js b/js/src/tests/test262/language/statements/async-generator/dstr/obj-ptrn-prop-id-init-skipped.js new file mode 100644 index 0000000000..70d3ccd06c --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/dstr/obj-ptrn-prop-id-init-skipped.js @@ -0,0 +1,58 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/dstr-binding/obj-ptrn-prop-id-init-skipped.case +// - src/dstr-binding/default/async-gen-func-decl.template +/*--- +description: Destructuring initializer is not evaluated when value is not `undefined` (async generator function declaration) +esid: sec-asyncgenerator-definitions-instantiatefunctionobject +features: [async-iteration] +flags: [generated, async] +info: | + AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier + ( FormalParameters ) { AsyncGeneratorBody } + + [...] + 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, + scope, strict). + [...] + + + 13.3.3.7 Runtime Semantics: KeyedBindingInitialization + + BindingElement : BindingPattern Initializeropt + + [...] + 3. If Initializer is present and v is undefined, then + [...] +---*/ +var initCount = 0; +function counter() { + initCount += 1; +} + + +var callCount = 0; +async function* f({ s: t = counter(), u: v = counter(), w: x = counter(), y: z = counter() }) { + assert.sameValue(t, null); + assert.sameValue(v, 0); + assert.sameValue(x, false); + assert.sameValue(z, ''); + assert.sameValue(initCount, 0); + + assert.throws(ReferenceError, function() { + s; + }); + assert.throws(ReferenceError, function() { + u; + }); + assert.throws(ReferenceError, function() { + w; + }); + assert.throws(ReferenceError, function() { + y; + }); + callCount = callCount + 1; +}; +f({ s: null, u: 0, w: false, y: '' }).next().then(() => { + assert.sameValue(callCount, 1, 'invoked exactly once'); +}).then($DONE, $DONE); |