mpd/test/test_mixramp.cxx
Max Kellermann 39257717d8 test/test_mixramp: add threshold to floating point comparisons
Fixes bogus test failures on Debian build machines due to rounding
errors (hopefully).
2013-11-04 22:08:59 +01:00

88 lines
2.0 KiB
C++

/*
* Unit tests for mixramp_interpolate()
*/
#include "config.h"
#include "CrossFade.cxx"
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/ui/text/TestRunner.h>
#include <cppunit/extensions/HelperMacros.h>
#include <string.h>
class MixRampTest : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(MixRampTest);
CPPUNIT_TEST(TestInterpolate);
CPPUNIT_TEST_SUITE_END();
public:
void TestInterpolate() {
const char *input = "1.0 0.00;3.0 0.10;6.0 2.50;";
char *foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(double(0),
mixramp_interpolate(foo, 0),
0.05);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(0),
mixramp_interpolate(foo, 1),
0.005);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(0.1),
mixramp_interpolate(foo, 3),
0.005);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(2.5),
mixramp_interpolate(foo, 6),
0.01);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT(mixramp_interpolate(foo, 6.1) < 0);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(0.05),
mixramp_interpolate(foo, 2),
0.05);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(1.3),
mixramp_interpolate(foo, 4.5),
0.05);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(0.9),
mixramp_interpolate(foo, 4),
0.05);
free(foo);
foo = strdup(input);
CPPUNIT_ASSERT_DOUBLES_EQUAL(float(1.7),
mixramp_interpolate(foo, 5),
0.05);
free(foo);
}
};
CPPUNIT_TEST_SUITE_REGISTRATION(MixRampTest);
int
main(gcc_unused int argc, gcc_unused char **argv)
{
CppUnit::TextUi::TestRunner runner;
auto &registry = CppUnit::TestFactoryRegistry::getRegistry();
runner.addTest(registry.makeTest());
return runner.run() ? EXIT_SUCCESS : EXIT_FAILURE;
}