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21 lines
783 B
JavaScript
21 lines
783 B
JavaScript
// Copyright 2009 the Sputnik 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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info: |
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A property name P (in the form of a string value) is an array index
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if and only if ToString(ToUint32(P)) is equal to P and ToUint32(P) is not equal to 2^32 - 1
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es5id: 15.4_A1.1_T5
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description: Checking for null and undefined
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---*/
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var x = [];
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x[null] = 0;
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assert.sameValue(x[0], undefined, 'The value of x[0] is expected to equal undefined');
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assert.sameValue(x["null"], 0, 'The value of x["null"] is expected to be 0');
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var y = [];
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y[undefined] = 0;
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assert.sameValue(y[0], undefined, 'The value of y[0] is expected to equal undefined');
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assert.sameValue(y["undefined"], 0, 'The value of y["undefined"] is expected to be 0');
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