tests/math/RationalTest.cpp

   1 #include "RationalTest.h"
   2
   3 #include <SDL.h>
   4
   5 CPPUNIT_TEST_SUITE_REGISTRATION(test_math::RationalTest);
   6
   7 typedef math::Rational<int> Rational;
   8 typedef math::Rational<short> ShortRational;
   9
  10
  11 namespace test_math {
  12
  13 void RationalTest::setUp() {
  14
  15 }
  16
  17 void RationalTest::tearDown() {
  18
  19 }
  20
  21
  22 void RationalTest::testConversion() {
  23         CPPUNIT_ASSERT_EQUAL(1, Rational(3, 2).Int());
  24         CPPUNIT_ASSERT_DOUBLES_EQUAL(0.75, Rational(3, 4).Double(), std::numeric_limits<double>::epsilon());
  25
  26         CPPUNIT_ASSERT_EQUAL(-1, Rational(-3, 2).Int());
  27         CPPUNIT_ASSERT_EQUAL(Rational(3, 2), Rational(ShortRational(3, 2)));
  28         CPPUNIT_ASSERT_EQUAL(ShortRational(3, 2), ShortRational(Rational(3, 2)));
  29 }
  30
  31 void RationalTest::testComparison() {
  32         CPPUNIT_ASSERT_EQUAL(Rational(), Rational());
  33         CPPUNIT_ASSERT_EQUAL(Rational(1), Rational(1));
  34         CPPUNIT_ASSERT_EQUAL(Rational(-1), Rational(-1));
  35
  36         CPPUNIT_ASSERT_EQUAL(Rational(1, 2), Rational(2, 4));
  37
  38         CPPUNIT_ASSERT(Rational(0) != Rational(1));
  39         CPPUNIT_ASSERT(Rational(0) != Rational(-1));
  40         CPPUNIT_ASSERT(Rational(1, 2) != Rational(-1, 2));
  41
  42         CPPUNIT_ASSERT(Rational(0) < Rational(1));
  43         CPPUNIT_ASSERT(Rational(1, 2) <= Rational(1));
  44         CPPUNIT_ASSERT(Rational(0) > Rational(-1));
  45         CPPUNIT_ASSERT(Rational(1) >= Rational(-1, 2));
  46
  47         CPPUNIT_ASSERT(Rational() == ShortRational());
  48         CPPUNIT_ASSERT(ShortRational() == Rational());
  49         CPPUNIT_ASSERT(Rational(1) == ShortRational(1));
  50         CPPUNIT_ASSERT(ShortRational(1) == Rational(1));
  51         CPPUNIT_ASSERT(Rational(-1) == ShortRational(-1));
  52         CPPUNIT_ASSERT(ShortRational(-1) == Rational(-1));
  53
  54         CPPUNIT_ASSERT(Rational(1, 2) == ShortRational(2, 4));
  55         CPPUNIT_ASSERT(ShortRational(1, 2) == Rational(2, 4));
  56
  57         CPPUNIT_ASSERT(Rational(0) != ShortRational(1));
  58         CPPUNIT_ASSERT(ShortRational(0) != Rational(1));
  59         CPPUNIT_ASSERT(Rational(0) != ShortRational(-1));
  60         CPPUNIT_ASSERT(ShortRational(0) != Rational(-1));
  61         CPPUNIT_ASSERT(Rational(1, 2) != ShortRational(-1, 2));
  62         CPPUNIT_ASSERT(ShortRational(1, 2) != Rational(-1, 2));
  63
  64         CPPUNIT_ASSERT(Rational(0) < ShortRational(1));
  65         CPPUNIT_ASSERT(ShortRational(0) < Rational(1));
  66         CPPUNIT_ASSERT(Rational(1, 2) <= ShortRational(1));
  67         CPPUNIT_ASSERT(ShortRational(1, 2) <= Rational(1));
  68         CPPUNIT_ASSERT(Rational(0) > ShortRational(-1));
  69         CPPUNIT_ASSERT(ShortRational(0) > Rational(-1));
  70         CPPUNIT_ASSERT(Rational(1) >= ShortRational(-1, 2));
  71         CPPUNIT_ASSERT(ShortRational(1) >= Rational(-1, 2));
  72 }
  73
  74 void RationalTest::testSum() {
  75         CPPUNIT_ASSERT_EQUAL(
  76                         Rational(3, 4),
  77                         Rational(1, 4) + Rational(1, 2));
  78 }
  79
  80 void RationalTest::testProduct() {
  81         CPPUNIT_ASSERT_EQUAL(
  82                         Rational(8),
  83                         Rational(2) * 4);
  84         CPPUNIT_ASSERT_EQUAL(
  85                         Rational(4),
  86                         Rational(2) / 0.5);
  87         CPPUNIT_ASSERT_EQUAL(
  88                         Rational(3),
  89                         Rational(15) / Rational(5));
  90         CPPUNIT_ASSERT_EQUAL(
  91                         Rational(3),
  92                         Rational(15) / 5);
  93 }
  94
  95 }