176 lines
3.3 KiB
C++
176 lines
3.3 KiB
C++
#include <QtTest>
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#include <QDebug>
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#include "fraction.hpp"
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using namespace FractionNS;
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class FractionTest : public QObject
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{
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Q_OBJECT
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public:
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FractionTest();
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~FractionTest();
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private slots:
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void test_constructor();
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void test_display();
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void test_equivalence();
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void test_addition();
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void test_inequivalence();
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void test_substraction();
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};
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FractionTest::FractionTest()
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{
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}
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FractionTest::~FractionTest()
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{
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}
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void FractionTest::test_constructor()
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{
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// Normal fraction
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Fraction f1 = Fraction(1, 2);
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QCOMPARE(f1.getNumerator(), 1);
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QCOMPARE(f1.getDenominator(), 2);
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// Reducible fraction
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Fraction f2 = Fraction(2,4);
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QCOMPARE(f2.getNumerator(), 1);
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QCOMPARE(f2.getDenominator(), 2);
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// Negative fractions
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Fraction f3 = Fraction(-1, 3);
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QCOMPARE(f3.getNumerator(), -1);
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QCOMPARE(f3.getDenominator(), 3);
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Fraction f4 = Fraction(1, -3);
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QCOMPARE(f4.getNumerator(), -1);
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QCOMPARE(f4.getDenominator(), 3);
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// Double negative (positive) fraction
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Fraction f5 = Fraction(-2, -3);
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QCOMPARE(f5.getNumerator(), 2);
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QCOMPARE(f5.getDenominator(), 3);
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}
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void FractionTest::test_display()
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{
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// Normal fraction
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Fraction f1 = Fraction(1, 2);
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QCOMPARE(f1.display(), "1/2");
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Fraction f2 = Fraction(1, 3);
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QCOMPARE(f2.display(), "1/3");
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// Fractions that reduce
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Fraction f3 = Fraction(2, 4);
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QCOMPARE(f3.display(), "1/2");
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Fraction f4 = Fraction(982929, 123456);
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QCOMPARE(f4.display(), "327643/41152");
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// Negative Fractions
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Fraction f5 = Fraction(-5, 2);
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QCOMPARE(f5.display(), "-5/2");
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}
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void FractionTest::test_equivalence()
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{
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Fraction f1 = Fraction(1, 1);
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Fraction f2 = Fraction(1, 1);
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Fraction f3 = Fraction(-1, 1);
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QCOMPARE(f1, f2);
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QCOMPARE(f1, 1);
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QCOMPARE(f1, 1.0);
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QCOMPARE(f1, 1.0f);
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QCOMPARE(f2, 1);
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QCOMPARE(f2, 1.0);
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QCOMPARE(f2, 1.0f);
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QCOMPARE(f3, -1);
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QCOMPARE(f3, -1.0);
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QCOMPARE(f3, -1.0f);
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Fraction f4 = Fraction(2, 3);
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Fraction f5 = Fraction(-2, 3);
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Fraction f6 = Fraction(2, -3);
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Fraction f7 = Fraction(-2, -3);
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QCOMPARE(f4, f7);
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QCOMPARE(f5, f6);
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QCOMPARE(f4, 2.0f/3.0f);
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QCOMPARE(f4, 2.0/3.0);
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QCOMPARE(f7, 2.0f/3.0f);
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QCOMPARE(f7, 2.0/3.0);
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QCOMPARE(f5, -2.0f/3.0f);
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QCOMPARE(f5, -2.0/3.0);
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QCOMPARE(f6, -2.0f/3.0f);
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QCOMPARE(f6, -2.0/3.0);
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}
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void FractionTest::test_inequivalence() {
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Fraction f1 = Fraction(1, 1);
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Fraction f2 = Fraction(-1, 1);
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Fraction f3 = Fraction(2, 3);
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QVERIFY(f1 != f2);
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QVERIFY(f2 != f3);
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QVERIFY(f3 != f1);
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QVERIFY(f3 != 1);
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QVERIFY(f3 != 1.0);
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QVERIFY(f3 != 1.0f);
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}
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void FractionTest::test_addition()
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{
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Fraction f1 = Fraction(1, 2);
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QCOMPARE(f1 + 1, 1.5f);
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QCOMPARE(f1, 0.5f);
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f1 += 1;
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QCOMPARE(f1, 1.5);
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Fraction f2 = Fraction(1, 2);
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QCOMPARE(f2 + 1, 1.5f);
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QCOMPARE(f2, 0.5f);
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Fraction f3 = Fraction(-2, 9);
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QCOMPARE(f3, -(2.0/9.0));
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QCOMPARE(f3, -(2.0f/9.0f));
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f3 += Fraction(2, 9);
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QCOMPARE(f3, 0);
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QCOMPARE(f3, 0.0);
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QCOMPARE(f3, 0.0f);
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}
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void FractionTest::test_substraction() {
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Fraction f1 = Fraction(11) - 10;
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QCOMPARE(f1, 1);
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Fraction f2 = Fraction(2, 3);
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QCOMPARE(f1 - f2, Fraction(1, 3));
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QCOMPARE(f2 - f1, Fraction(-1, 3));
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Fraction f3 = Fraction(8, 3);
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f3 -= Fraction(2, 3);
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QCOMPARE(f3, Fraction(6, 3));
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Fraction f4 = Fraction(9, 3);
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f4 -= 3;
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QCOMPARE(f4, 0);
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}
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QTEST_APPLESS_MAIN(FractionTest)
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#include "tst_fractiontest.moc"
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