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This changeset increases coverage for section 21, specifically "21.1 String Objects". * Add tests for "this" validation of String methods * Add tests for ToNumber as used by String methods * Add test for `length` prop of exotic String objs * fixup! Add test for `length` prop of exotic String objs
30 lines
874 B
JavaScript
30 lines
874 B
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-properties-of-string-instances-length
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es6id: 21.1.4.1
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description: The "length" property of String objects
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info: |
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[...]
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4. Return ? StringCreate(s, ? GetPrototypeFromConstructor(NewTarget,
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"%StringPrototype%")).
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includes: [propertyHelper.js]
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---*/
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var str = new String('');
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verifyNotEnumerable(str, 'length');
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verifyNotWritable(str, 'length');
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verifyNotConfigurable(str, 'length');
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assert.sameValue(str.length, 0, 'empty string');
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str = new String(' ');
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assert.sameValue(str.length, 1, 'whitespace');
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str = new String(' \b ');
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assert.sameValue(str.length, 3, 'character escape (U+008, "backspace")');
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str = new String('\ud834\udf06');
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assert.sameValue(str.length, 2, 'Unicode escape (surrogate pair)');
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