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90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/function-forms/dflt-params-arg-val-not-undefined.case
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// - src/function-forms/default/cls-decl-async-meth.template
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/*---
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description: Use of initializer when argument value is not `undefined` (class declaration async method)
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esid: sec-class-definitions-runtime-semantics-evaluation
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features: [default-parameters, async-functions]
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flags: [generated, async]
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info: |
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ClassDeclaration : class BindingIdentifier ClassTail
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1. Let className be StringValue of BindingIdentifier.
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2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
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argument className.
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[...]
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14.5.14 Runtime Semantics: ClassDefinitionEvaluation
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21. For each ClassElement m in order from methods
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a. If IsStatic of m is false, then
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i. Let status be the result of performing
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PropertyDefinitionEvaluation for m with arguments proto and
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false.
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[...]
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Runtime Semantics: PropertyDefinitionEvaluation
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AsyncMethod : async PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }
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1. Let propKey be the result of evaluating PropertyName.
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2. ReturnIfAbrupt(propKey).
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3. If the function code for this AsyncMethod is strict mode code, let strict be true. Otherwise
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let strict be false.
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4. Let scope be the LexicalEnvironment of the running execution context.
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5. Let closure be ! AsyncFunctionCreate(Method, UniqueFormalParameters, AsyncFunctionBody,
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scope, strict).
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[...]
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14.1.19 Runtime Semantics: IteratorBindingInitialization
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FormalsList : FormalsList , FormalParameter
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[...]
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23. Let iteratorRecord be Record {[[Iterator]]:
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CreateListIterator(argumentsList), [[Done]]: false}.
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24. If hasDuplicates is true, then
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[...]
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25. Else,
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a. Perform ? IteratorBindingInitialization for formals with
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iteratorRecord and env as arguments.
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[...]
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---*/
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var obj = {};
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var falseCount = 0;
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var stringCount = 0;
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var nanCount = 0;
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var zeroCount = 0;
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var nullCount = 0;
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var objCount = 0;
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var callCount = 0;
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class C {
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async method(aFalse = falseCount +=1, aString = stringCount += 1, aNaN = nanCount += 1, a0 = zeroCount += 1, aNull = nullCount += 1, aObj = objCount +=1) {
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assert.sameValue(aFalse, false);
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assert.sameValue(aString, '');
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assert.sameValue(aNaN, NaN);
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assert.sameValue(a0, 0);
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assert.sameValue(aNull, null);
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assert.sameValue(aObj, obj);
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callCount = callCount + 1;
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}
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}
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// Stores a reference `ref` for case evaluation
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var ref = C.prototype.method;
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ref(false, '', NaN, 0, null, obj).then(() => {
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assert.sameValue(callCount, 1, 'method invoked exactly once');
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}).then($DONE, $DONE);
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assert.sameValue(falseCount, 0, 'initializer not evaluated: false');
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assert.sameValue(stringCount, 0, 'initializer not evaluated: string');
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assert.sameValue(nanCount, 0, 'initializer not evaluated: NaN');
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assert.sameValue(zeroCount, 0, 'initializer not evaluated: 0');
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assert.sameValue(nullCount, 0, 'initializer not evaluated: null');
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assert.sameValue(objCount, 0, 'initializer not evaluated: object');
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