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47 lines
1.0 KiB
JavaScript
47 lines
1.0 KiB
JavaScript
// Copyright (C) 2016 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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esid: sec-assertion
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es6id: 21.2.2.6
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description: The `y` flag has no effect on the `^` assertion
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info: |
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Even when the y flag is used with a pattern, ^ always matches only at the
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beginning of Input, or (if Multiline is true) at the beginning of a line.
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---*/
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var re;
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re = /^a/y;
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re.lastIndex = 0;
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assert.sameValue(
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re.test('a'), true, 'positive: beginning of input (without `m`)'
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);
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re.lastIndex = 1;
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assert.sameValue(
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re.test(' a'), false, 'negative: within a line (without `m`)'
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);
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re.lastIndex = 1;
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assert.sameValue(
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re.test('\na'), false, 'negative: beginning of line (without `m`)'
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);
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re = /^a/my;
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re.lastIndex = 0;
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assert.sameValue(
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re.test('a'), true, 'positive: beginning of input (with `m`)'
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);
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re.lastIndex = 1;
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assert.sameValue(
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re.test(' a'), false, 'negative: within a line (with `m`)'
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);
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re.lastIndex = 1;
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assert.sameValue(
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re.test('\na'), true, 'positive: beginning of line (with `m`)'
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);
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