src/annex-b-fns/func-update.case


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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Variable binding value is updated following evaluation
template: func
info: |
    B.3.3.1 Changes to FunctionDeclarationInstantiation

    [...]
    3. When the FunctionDeclaration f is evaluated, perform the following steps
       in place of the FunctionDeclaration Evaluation algorithm provided in
       14.1.21:
       a. Let fenv be the running execution context's VariableEnvironment.
       b. Let fenvRec be fenv's EnvironmentRecord.
       c. Let benv be the running execution context's LexicalEnvironment.
       d. Let benvRec be benv's EnvironmentRecord.
       e. Let fobj be ! benvRec.GetBindingValue(F, false).
       f. Perform ! fenvRec.SetMutableBinding(F, fobj, false).
       g. Return NormalCompletion(empty). 
---*/

//- setup
var after;
//- body
return 'declaration';
//- after
after = f;
//- teardown
assert.sameValue(typeof after, 'function');
assert.sameValue(after(), 'declaration');