basegfx/test/B1DRangeTest.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   9  * This file incorporates work covered by the following license notice:
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <cppunit/TestAssert.h>
  21 #include <cppunit/TestFixture.h>
  22 #include <cppunit/extensions/HelperMacros.h>
  23
  24 #include <basegfx/range/b1drange.hxx>
  25
  26 namespace basegfx
  27 {
  28 class b1Xrange : public CppUnit::TestFixture
  29 {
  30 public:
  31     template <class Type> void implCheck()
  32     {
  33         // test interval axioms
  34         // (http://en.wikipedia.org/wiki/Interval_%28mathematics%29)
  35         Type aRange;
  36         CPPUNIT_ASSERT_MESSAGE("default ctor - empty range", aRange.isEmpty());
  37         CPPUNIT_ASSERT_MESSAGE("center - get cop-out value since range is empty",
  38                                aRange.getCenter() == 0);
  39
  40         // degenerate interval
  41         aRange.expand(1);
  42         CPPUNIT_ASSERT_MESSAGE("degenerate range - still, not empty!", !aRange.isEmpty());
  43         CPPUNIT_ASSERT_MESSAGE("degenerate range - size of 0", aRange.getRange() == 0);
  44         CPPUNIT_ASSERT_MESSAGE("same value as degenerate range - is inside range",
  45                                aRange.isInside(1));
  46         CPPUNIT_ASSERT_MESSAGE("center - must be the single range value", aRange.getCenter() == 1);
  47
  48         // proper interval
  49         aRange.expand(2);
  50         CPPUNIT_ASSERT_MESSAGE("proper range - size of 1", aRange.getRange() == 1);
  51         CPPUNIT_ASSERT_MESSAGE("smaller value of range - is inside *closed* range",
  52                                aRange.isInside(1));
  53         CPPUNIT_ASSERT_MESSAGE("larger value of range - is inside *closed* range",
  54                                aRange.isInside(2));
  55
  56         // center for proper interval that works for ints, too
  57         aRange.expand(3);
  58         CPPUNIT_ASSERT_MESSAGE("center - must be half of the range", aRange.getCenter() == 2);
  59
  60         // check overlap
  61         Type aRange2(0, 1);
  62         CPPUNIT_ASSERT_MESSAGE("range overlapping *includes* upper bound",
  63                                aRange.overlaps(aRange2));
  64         CPPUNIT_ASSERT_MESSAGE("range overlapping *includes* upper bound, but only barely",
  65                                !aRange.overlapsMore(aRange2));
  66
  67         Type aRange3(0, 2);
  68         CPPUNIT_ASSERT_MESSAGE("range overlapping is fully overlapping now",
  69                                aRange.overlapsMore(aRange3));
  70
  71         // check intersect
  72         Type aRange4(3, 4);
  73         aRange.intersect(aRange4);
  74         CPPUNIT_ASSERT_MESSAGE("range intersection is yielding empty range!", !aRange.isEmpty());
  75
  76         Type aRange5(5, 6);
  77         aRange.intersect(aRange5);
  78         CPPUNIT_ASSERT_MESSAGE("range intersection is yielding nonempty range!", aRange.isEmpty());
  79     }
  80
  81     void check() { implCheck<B1DRange>(); }
  82
  83     // Change the following lines only, if you add, remove or rename
  84     // member functions of the current class,
  85     // because these macros are need by auto register mechanism.
  86
  87     CPPUNIT_TEST_SUITE(b1Xrange);
  88     CPPUNIT_TEST(check);
  89     CPPUNIT_TEST_SUITE_END();
  90 }; // class b1Xrange
  91
  92 } // namespace basegfx
  93
  94 CPPUNIT_TEST_SUITE_REGISTRATION(basegfx::b1Xrange);
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */