66 lines
3.4 KiB
JavaScript
66 lines
3.4 KiB
JavaScript
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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description(
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'This test checks a few Number.toPrecision cases, including ' +
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'<a href="http://bugs.webkit.org/show_bug.cgi?id=15145">15145: (0.999).toPrecision(1) returns incorrect result</a>' +
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'.');
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shouldBeEqualToString("(0.999).toPrecision(1)", "1");
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shouldBeEqualToString("(0.999).toPrecision(2)", "1.0");
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shouldBeEqualToString("(0.999).toPrecision(3)", "0.999");
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var posInf = 1/0;
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var negInf = -1/0;
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var nan = 0/0;
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shouldBeEqualToString("(0.0).toPrecision(4)", "0.000");
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shouldBeEqualToString("(-0.0).toPrecision(4)", "0.000");
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shouldBeEqualToString("(0.0).toPrecision()", "0");
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shouldBeEqualToString("(-0.0).toPrecision()", "0");
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shouldBeEqualToString("(1234.567).toPrecision()", "1234.567");
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shouldThrow("(1234.567).toPrecision(0)");
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shouldThrow("(1234.567).toPrecision(null)"); // just like 0
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shouldThrow("(1234.567).toPrecision(false)"); // just like 0
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shouldThrow("(1234.567).toPrecision('foo')"); // just like 0
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shouldThrow("(1234.567).toPrecision(-1)");
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shouldBeEqualToString("(1234.567).toPrecision(1)", "1e+3");
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shouldBeEqualToString("(1234.567).toPrecision(true)", "1e+3"); // just like 1
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shouldBeEqualToString("(1234.567).toPrecision('1')", "1e+3"); // just like 1
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shouldBeEqualToString("(1234.567).toPrecision(2)", "1.2e+3");
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shouldBeEqualToString("(1234.567).toPrecision(2.9)", "1.2e+3");
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shouldBeEqualToString("(1234.567).toPrecision(5)", "1234.6");
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shouldBeEqualToString("(1234.567).toPrecision(21)", "1234.56700000000000728");
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// SpiderMonkey allows precision values 1 to 100, we implement the spec and only allow 1 to 21.
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shouldThrow("(1234.567).toPrecision(22)");
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shouldThrow("(1234.567).toPrecision(100)");
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shouldThrow("(1234.567).toPrecision(101)");
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shouldThrow("(1234.567).toPrecision(posInf)");
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shouldThrow("(1234.567).toPrecision(negInf)");
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shouldThrow("(1234.567).toPrecision(nan)"); // nan is treated like 0
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shouldBeEqualToString("posInf.toPrecision()", "Infinity");
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shouldBeEqualToString("negInf.toPrecision()", "-Infinity");
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shouldBeEqualToString("nan.toPrecision()", "NaN");
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