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Diffstat (limited to 'js/src/tests/test262/language/statements/async-generator/unscopables-with-in-nested-fn.js')
-rw-r--r-- | js/src/tests/test262/language/statements/async-generator/unscopables-with-in-nested-fn.js | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/async-generator/unscopables-with-in-nested-fn.js b/js/src/tests/test262/language/statements/async-generator/unscopables-with-in-nested-fn.js new file mode 100644 index 0000000000..7c63a23776 --- /dev/null +++ b/js/src/tests/test262/language/statements/async-generator/unscopables-with-in-nested-fn.js @@ -0,0 +1,82 @@ +// |reftest| async +// This file was procedurally generated from the following sources: +// - src/function-forms/unscopables-with-in-nested-fn.case +// - src/function-forms/default/async-gen-func-decl.template +/*--- +description: Symbol.unscopables behavior across scope boundaries (async generator function declaration) +esid: sec-asyncgenerator-definitions-instantiatefunctionobject +features: [globalThis, Symbol.unscopables, async-iteration] +flags: [generated, noStrict, async] +info: | + AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier + ( FormalParameters ) { AsyncGeneratorBody } + + [...] + 3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody, + scope, strict). + [...] + + + ... + Let envRec be lex's EnvironmentRecord. + Let exists be ? envRec.HasBinding(name). + + HasBinding + + ... + If the withEnvironment flag of envRec is false, return true. + Let unscopables be ? Get(bindings, @@unscopables). + If Type(unscopables) is Object, then + Let blocked be ToBoolean(? Get(unscopables, N)). + If blocked is true, return false. + + (The `with` Statement) Runtime Semantics: Evaluation + + ... + Set the withEnvironment flag of newEnv’s EnvironmentRecord to true. + ... + +---*/ +let count = 0; +var v = 1; +globalThis[Symbol.unscopables] = { + v: true, +}; + +{ + count++; + + +var callCount = 0; +// Stores a reference `ref` for case evaluation +async function* ref(x) { + (function() { + count++; + with (globalThis) { + count++; + assert.sameValue(v, 1, 'The value of `v` is 1'); + } + })(); + (function() { + count++; + var v = x; + with (globalThis) { + count++; + assert.sameValue(v, 10, 'The value of `v` is 10'); + v = 20; + } + assert.sameValue(v, 20, 'The value of `v` is 20'); + assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1'); + })(); + assert.sameValue(v, 1, 'The value of `v` is 1'); + assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1'); + callCount = callCount + 1; +} + +ref(10).next().then(() => { + assert.sameValue(callCount, 1, 'generator function invoked exactly once'); +}).then($DONE, $DONE); + + count++; +} +assert.sameValue(count, 6, 'The value of `count` is 6'); |