mirror of https://github.com/tc39/test262.git
27 lines
889 B
JavaScript
27 lines
889 B
JavaScript
// Copyright (C) 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 14.1.6
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description: >
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Default parameters' effect on function length
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info: >
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Function length is counted by the non initialized parameters in the left.
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FormalsList : FormalParameter
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1. If HasInitializer of FormalParameter is true return 0
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2. Return 1.
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FormalsList : FormalsList , FormalParameter
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1. Let count be the ExpectedArgumentCount of FormalsList.
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2. If HasInitializer of FormalsList is true or HasInitializer of
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FormalParameter is true, return count.
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3. Return count+1.
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---*/
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assert.sameValue((function (x = 42) {}).length, 0);
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assert.sameValue((function (x = 42, y) {}).length, 0);
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assert.sameValue((function (x, y = 42) {}).length, 1);
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assert.sameValue((function (x, y = 42, z) {}).length, 1);
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