90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*
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* Copyright (c) 2016, Michael Feathers, James Grenning, Bas Vodde
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* and Arnd Strube. 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 are met:
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* * 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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* * 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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* * Neither the name of the <organization> nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE EARLIER MENTIONED AUTHORS ''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 <copyright holder> 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
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* ON 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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*/
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#include "CppUTest/CommandLineTestRunner.h"
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#include "CppUTest/TestHarness.h"
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#include "CppUTest/TestRegistry.h"
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#if CPPUTEST_HAVE_FENV
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#include "CppUTestExt/IEEE754ExceptionsPlugin.h"
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/*
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* To see a demonstration of tests failing as a result of IEEE754ExceptionsPlugin
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* picking up floating point errors, run the test executable with the -ri option.
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*
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*/
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extern "C" {
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#include <fenv.h>
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}
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#include <limits>
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TEST_GROUP(FE_Demo)
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{
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void setup() CPPUTEST_OVERRIDE
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{
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IEEE754ExceptionsPlugin::disableInexact();
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}
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};
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IGNORE_TEST(FE_Demo, should_fail_when_FE_DIVBYZERO_is_set)
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{
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float f = 1.0f;
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CHECK((f /= 0.0f) >= std::numeric_limits<float>::infinity());
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}
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IGNORE_TEST(FE_Demo, should_fail_when_FE_UNDERFLOW_is_set)
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{
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volatile float f = 0.01f;
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while (f > 0.0f)
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f = f * f;
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CHECK(f == 0.0f);
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}
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IGNORE_TEST(FE_Demo, should_fail_when_FE_OVERFLOW_is_set)
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{
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volatile float f = 1000.0f;
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while (f < std::numeric_limits<float>::infinity())
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f = f * f;
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CHECK(f >= std::numeric_limits<float>::infinity());
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}
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IGNORE_TEST(FE_Demo, should_fail_when_FE_INEXACT_is_set)
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{
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IEEE754ExceptionsPlugin::enableInexact();
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float f = 10.0f;
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DOUBLES_EQUAL((double)(f / 3.0f), (double)3.333f, (double)0.001f);
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}
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TEST(FE_Demo, should_succeed_when_no_flags_are_set)
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{
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CHECK(5.0f == 15.0f / 3.0f);
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}
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#endif
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