mirror of https://github.com/tc39/test262.git
74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
// Copyright (C) 2019 Leo Balter. 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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description: >
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ShortCircuitExpression in the Conditional Expression (? :)
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esid: sec-conditional-operator
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info: |
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ShortCircuitExpression :
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LogicalORExpression
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CoalesceExpression
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CoalesceExpression :
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CoalesceExpressionHead ?? BitwiseORExpression
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CoalesceExpressionHead :
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CoalesceExpression
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BitwiseORExpression
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ConditionalExpression :
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ShortCircuitExpression
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ShortCircuitExpression ? AssignmentExpression : AssignmentExpression
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features: [coalesce-expression]
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---*/
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var x;
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x = undefined ?? true ? 0 : 42;
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assert.sameValue(x, 0, 'undefined ?? true ? 0 : 42');
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x = undefined;
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x = null ?? true ? 0 : 42;
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assert.sameValue(x, 0, 'null ?? true ? 0 : 42');
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x = undefined;
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x = undefined ?? false ? 0 : 42;
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assert.sameValue(x, 42, 'undefined ?? false ? 0 : 42');
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x = undefined;
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x = null ?? false ? 0 : 42;
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assert.sameValue(x, 42, 'null ?? false ? 0 : 42');
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x = undefined;
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x = false ?? true ? 0 : 42;
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assert.sameValue(x, 42, 'false ?? true ? 0 : 42');
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x = undefined;
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x = 0 ?? true ? 0 : 42;
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assert.sameValue(x, 42, '0 ?? true ? 0 : 42');
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x = undefined;
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x = 1 ?? false ? 0 : 42;
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assert.sameValue(x, 0, '1 ?? false ? 0 : 42');
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x = undefined;
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x = true ?? false ? 0 : 42;
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assert.sameValue(x, 0, 'true ?? false ? 0 : 42');
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x = undefined;
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x = true ?? true ? 0 : 42;
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assert.sameValue(x, 0, 'true ?? true ? 0 : 42');
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x = undefined;
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x = '' ?? true ? 0 : 42;
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assert.sameValue(x, 42, '"" ?? true ? 0 : 42');
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x = undefined;
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x = Symbol() ?? false ? 0 : 42;
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assert.sameValue(x, 0, 'Symbol() ?? false ? 0 : 42');
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x = undefined;
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x = {} ?? false ? 0 : 42;
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assert.sameValue(x, 0, 'object ?? false ? 0 : 42');
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