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			22 lines
		
	
	
		
			780 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			22 lines
		
	
	
		
			780 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2015 the V8 project authors. All rights reserved.
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| // Use of this source code is governed by a BSD-style license that can be
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| // found in the LICENSE file.
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| 
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| var pattern = {
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|   [Symbol.replace]: (string, newValue) => string + newValue,
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|   toString: () => "c"
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| };
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| // Check object coercible fails.
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| assertThrows(() => String.prototype.replace.call(null, pattern, "x"),
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|              TypeError);
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| // Override is called.
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| assertEquals("abcdex", "abcde".replace(pattern, "x"));
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| // Non-callable override.
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| pattern[Symbol.replace] = "dumdidum";
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| assertThrows(() => "abcde".replace(pattern, "x"), TypeError);
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| // Null override.
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| pattern[Symbol.replace] = null;
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| assertEquals("abXde", "abcde".replace(pattern, "X"));
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| 
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| assertEquals("[Symbol.replace]", RegExp.prototype[Symbol.replace].name);
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