fractionTest.cpp

/*
 * A testing class for CISC/CMPE320 assignment 2.
 * You must satisfy all tests in this file, but may add some of your own.
 */
#include <iostream>
using namespace std;

#include "fractionClass.h"	// Add your netid to the #include

int main() {
    
    // Test constructors and << operator overloading
    Fraction test1;
    cout << "Should be \"0/1\": " << test1 << endl;
    Fraction test2(4);
    cout << "Should be \"4/1\": " << test2 << endl;
    Fraction test3(20, 30);
    cout << "Should be \"2/3\": " << test3 << endl;
    Fraction test4(210, -60);
    cout << "Should be \"-7/2\": " << test4 << endl;
    
    // Test exception for when denominator is zero
    try {
        Fraction test5(4, 0);
        cout << "Should not get here: " << test5 << endl;
    } catch (FractionException &e) {
        cout << "Exception message should indicate illegal denominator: " << e.what() << endl;
    }

    // Test accessors
    cout << "Numerator should be -7: " << test4.numerator() << endl;
    cout << "Denominator should be 2: " << test4.denominator() << endl;
    
    // Test binary arithmetic operators
    Fraction test6(9, 8);
    Fraction test7(1, 6);
    Fraction test8 = test6 + test7;
    cout << "Should be \"31/24\": " << test8 << endl;
    Fraction test9 = test6 - test7;
    cout << "Should be \"23/24\": " << test9 << endl;
    Fraction test10 = test6 - 1;
    cout << "Should be \"1/8\": " << test10 << endl;
    Fraction test11 = 2 - test7;
    cout << "Should be \"11/6\": " << test11 << endl;
    Fraction test12 = test6 * test7;
    cout << "Should be \"3/16\": " << test12 << endl;
    Fraction test13 = test6 / test7;
    cout << "Should be \"27/4\": " << test13 << endl;
    
    // Test unary negation
    cout << "Should be \"-1/6\": " << -test7 << endl;

    // Test pre and post-increment operators
    Fraction test14 = 2 + test3++;
    cout << "Should be \"8/3\": " << test14 << endl;
    cout << "Should be \"5/3\": " << test3 << endl;
    Fraction test15 = 2 + ++test3;
    cout << "Should be \"14/3\": " << test15 << endl;
    cout << "Should be \"8/3\": " << test3 << endl;
    
    // Test += operator
    Fraction test16(3, 8);
    test16 += test3;
    cout << "Should be \"73/24\": " << test16 << endl;
    
    // Test comparisons
    cout << "\nShould see six comparison test results:" << endl;
    Fraction test17(9, 8);
    if (test6 == test17)
        cout << "Equality test passed." << endl;
    if (test6 != test7)
        cout << "Inequality test passed." << endl;
    if (test6 > test7 && test6 >= test7)
        cout << "Greater than test passed." << endl;
    if (test7 < test6 && test7 <= test6)
        cout << "Less than test passed." << endl;
    if (test6 > 1)
        cout << "Mixed type comparison passed." << endl;
    if (1 < test6)
        cout << "Second mixed type comparison passed." << endl;
    
    // Test input, exception and +=:
    Fraction sum(0);
    Fraction fin;
    cout << "\nSumming fractions. Enter fractions as \"1/2\" or just enter a single integer." << endl;
    cout << "Enter zero to end the summation:" << endl;
    do {
        cout << "Enter a fraction to add to sum: ";
        try {
            cin >> fin;
            sum += fin;
        } catch (FractionException &e) {
            cout << e.what() << endl;
        }
    } while (fin != 0);
    cout << "Sum is: " << sum << endl;
    
    return 0;
    
} // end main