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36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
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: 21.1.2.2
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description: >
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Returns the String value with the code unit for the given coerced types.
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info: |
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String.fromCodePoint ( ...codePoints )
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1. Let result be the empty String.
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2. For each element next of codePoints, do
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a. Let nextCP be ? ToNumber(next).
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b. If nextCP is not an integral Number, throw a RangeError exception.
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c. If ℝ(nextCP) < 0 or ℝ(nextCP) > 0x10FFFF, throw a RangeError exception.
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d. Set result to the string-concatenation of result and UTF16EncodeCodePoint(ℝ(nextCP)).
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3. Assert: If codePoints is empty, then result is the empty String.
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4. Return result.
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Ref: 7.1.3 ToNumber ( argument )
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features: [String.fromCodePoint]
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---*/
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assert.sameValue(String.fromCodePoint(null), '\x00');
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assert.sameValue(String.fromCodePoint(false), '\x00');
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assert.sameValue(String.fromCodePoint(true), '\x01');
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assert.sameValue(String.fromCodePoint('42'), '\x2A');
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assert.sameValue(String.fromCodePoint('042'), '\x2A');
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assert.sameValue(
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String.fromCodePoint({
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valueOf: function() {
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return 31;
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}
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}),
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'\x1F'
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);
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