mirror of https://github.com/tc39/test262.git
41 lines
886 B
JavaScript
41 lines
886 B
JavaScript
// Copyright 2009 the Sputnik 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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info: The production x += y is the same as x = x + y
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es5id: 11.13.2_A4.4_T2.9
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description: >
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Type(x) is different from Type(y) and both types vary between
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String (primitive or object) and Null
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---*/
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var x;
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//CHECK#1
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x = "1";
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x += null;
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if (x !== "1null") {
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$ERROR('#1: x = "1"; x += null; x === "1null". Actual: ' + (x));
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}
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//CHECK#2
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x = null;
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x += "1";
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if (x !== "null1") {
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$ERROR('#2: x = null; x += "1"; x === "null1". Actual: ' + (x));
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}
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//CHECK#3
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x = new String("1");
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x += null;
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if (x !== "1null") {
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$ERROR('#3: x = new String("1"); x += null; x === "1null". Actual: ' + (x));
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}
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//CHECK#4
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x = null;
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x += new String("1");
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if (x !== "null1") {
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$ERROR('#4: x = null; x += new String("1"); x === "null1". Actual: ' + (x));
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}
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