mirror of https://github.com/tc39/test262.git
76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/function-forms/unscopables-with.case
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// - src/function-forms/default/async-gen-func-decl.template
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/*---
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description: Symbol.unscopables behavior across scope boundaries (async generator function declaration)
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esid: sec-asyncgenerator-definitions-instantiatefunctionobject
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features: [globalThis, Symbol.unscopables, async-iteration]
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flags: [generated, noStrict, async]
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info: |
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AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
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( FormalParameters ) { AsyncGeneratorBody }
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[...]
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3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
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scope, strict).
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[...]
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...
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Let envRec be lex's EnvironmentRecord.
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Let exists be ? envRec.HasBinding(name).
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HasBinding
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...
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If the withEnvironment flag of envRec is false, return true.
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Let unscopables be ? Get(bindings, @@unscopables).
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If Type(unscopables) is Object, then
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Let blocked be ToBoolean(? Get(unscopables, N)).
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If blocked is true, return false.
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(The `with` Statement) Runtime Semantics: Evaluation
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...
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Set the withEnvironment flag of newEnv’s EnvironmentRecord to true.
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...
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---*/
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let count = 0;
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var v = 1;
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globalThis[Symbol.unscopables] = {
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v: true,
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};
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{
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count++;
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var callCount = 0;
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// Stores a reference `ref` for case evaluation
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async function* ref(x) {
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count++;
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with (globalThis) {
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count++;
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assert.sameValue(v, undefined, 'The value of `v` is expected to equal `undefined`');
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}
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count++;
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var v = x;
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with (globalThis) {
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count++;
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assert.sameValue(v, 10, 'The value of `v` is 10');
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v = 20;
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}
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assert.sameValue(v, 20, 'The value of `v` is 20');
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assert.sameValue(globalThis.v, 1, 'The value of globalThis.v is 1');
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callCount = callCount + 1;
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}
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ref(10).next().then(() => {
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assert.sameValue(callCount, 1, 'generator function invoked exactly once');
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}).then($DONE, $DONE);
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count++;
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}
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assert.sameValue(count, 6, 'The value of `count` is 6');
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