File indexing completed on 2024-12-08 04:19:21

 // SPDX-FileCopyrightText: Lukas Sommer <sommerluk@gmail.com>
 // SPDX-License-Identifier: BSD-2-Clause OR MIT
 
 // First included header is the public header of the class we are testing;
 // this forces the header to be self-contained.
 #include "helperconversion.h"
 
 #include "lchdouble.h"
 #include <cmath>
 #include <lcms2.h>
 #include <qglobal.h>
 #include <qmetatype.h>
 #include <qobject.h>
 #include <qtest.h>
 #include <qtestcase.h>
 
 #if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
 #include <qtmetamacros.h>
 #else
 #include <qobjectdefs.h>
 #include <qstring.h>
 #endif
 
 Q_DECLARE_METATYPE(cmsCIELab)
 
 namespace PerceptualColor
 {
 
 class TestHelperConversion : public QObject
 {
     Q_OBJECT
 
 public:
     explicit TestHelperConversion(QObject *parent = nullptr)
         : QObject(parent)
     {
     }
 
 private Q_SLOTS:
 
     void initTestCase()
     {
         // Called before the first test function is executed
     }
 
     void cleanupTestCase()
     {
         // Called after the last test function was executed
     }
 
     void init()
     {
         // Called before each test function is executed
     }
     void cleanup()
     {
         // Called after every test function
     }
 
     void testLchConvertion()
     {
         // Check if round-trips work fine.
         // One sense
         cmsCIELCh startValue;
         startValue.L = 50.1;
         startValue.C = 20.1;
         startValue.h = 80.1;
         QCOMPARE(toCmsLch(toLchDouble(startValue)).L, startValue.L);
         QCOMPARE(toCmsLch(toLchDouble(startValue)).C, startValue.C);
         QCOMPARE(toCmsLch(toLchDouble(startValue)).h, startValue.h);
         // The other sense
         LchDouble startValue2;
         startValue2.l = 50.1;
         startValue2.c = 20.1;
         startValue2.h = 80.1;
         QCOMPARE(toLchDouble(toCmsLch(startValue2)).l, startValue2.l);
         QCOMPARE(toLchDouble(toCmsLch(startValue2)).c, startValue2.c);
         QCOMPARE(toLchDouble(toCmsLch(startValue2)).h, startValue2.h);
     }
 
     void testFromXyzToOklabCubeRoot()
     {
         // The function fromXyzToOklab relies on the assumption that
         // std::cbrt() returns negative results for negative radicands,
         // and not simply “nan”. As std::cbrt() isn’t constexpr, we cannot
         // use a static assert within the function. Therefore, we have this
         // unit test:
         const auto actual = std::cbrt(-27);
         const decltype(actual) expected = -3;
         QCOMPARE(actual, expected);
     }
 };
 
 } // namespace PerceptualColor
 
 QTEST_MAIN(PerceptualColor::TestHelperConversion)
 // The following “include” is necessary because we do not use a header file:
 #include "testhelperconversion.moc"