30 lines
767 B
HTML
30 lines
767 B
HTML
<p>This page tests that string addition prefers valueOf() over toString() for conversion. If the test passes, you'll see a PASS message below.</p>
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<pre id="console"></pre>
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<script>
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function log(s)
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{
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document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
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}
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function shouldBe(a, aDescription, b)
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{
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if (a === b)
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log("PASS: " + aDescription + " should be " + b + " and is.");
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else
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log("FAIL: " + aDescription + " should be " + b + " but instead is " + a + ".");
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}
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if (this.testRunner)
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testRunner.dumpAsText();
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var valueOfIsZero = {
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valueOf: function valueOf() { return 0; },
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toString: function toString() { return 1; }
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};
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shouldBe('1' + valueOfIsZero, "'1' + valueOfIsZero", "10");
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</script>
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