package Rational;

public class RationalTest {
    public static void main(String[] args) {
        System.out.println("=== Testing Rational Operations ===\n");

        // Create some rational numbers
        Rational r1 = new Rational(1, 2);   // 1/2
        Rational r2 = new Rational(1, 3);   // 1/3
        Rational r3 = new Rational(3, 4);   // 3/4
        Rational r4 = new Rational(2, 5);   // 2/5
        Rational r5 = new Rational(5, 1);   // 5 (integer)

        System.out.println("Created rational numbers:");
        System.out.println("r1 = " + r1);
        System.out.println("r2 = " + r2);
        System.out.println("r3 = " + r3);
        System.out.println("r4 = " + r4);
        System.out.println("r5 = " + r5);
        System.out.println();

        // Test ADDITION
        System.out.println("=== ADDITION ===");
        System.out.println("Instance method - r1 + r2 = " + r1.add(r2));
        System.out.println("Static method - Rational.add(r1, r2) = " + Rational.add(r1, r2));
        System.out.println("Expected: 1/2 + 1/3 = 5/6");
        System.out.println("Decimal: " + r1.add(r2).toDouble());
        System.out.println();

        // Test SUBTRACTION
        System.out.println("=== SUBTRACTION ===");
        System.out.println("Instance method - r1 - r2 = " + r1.subtract(r2));
        System.out.println("Static method - Rational.subtract(r1, r2) = " + Rational.subtract(r1, r2));
        System.out.println("Expected: 1/2 - 1/3 = 1/6");
        System.out.println("Decimal: " + r1.subtract(r2).toDouble());
        System.out.println();

        // Test MULTIPLICATION
        System.out.println("=== MULTIPLICATION ===");
        System.out.println("Instance method - r1 * r3 = " + r1.multiply(r3));
        System.out.println("Static method - Rational.multiply(r1, r3) = " + Rational.multiply(r1, r3));
        System.out.println("Expected: 1/2 * 3/4 = 3/8");
        System.out.println("Decimal: " + r1.multiply(r3).toDouble());
        System.out.println();

        // Test DIVISION
        System.out.println("=== DIVISION ===");
        System.out.println("Instance method - r1 ÷ r2 = " + r1.divide(r2));
        System.out.println("Static method - Rational.divide(r1, r2) = " + Rational.divide(r1, r2));
        System.out.println("Expected: 1/2 ÷ 1/3 = 3/2");
        System.out.println("Decimal: " + r1.divide(r2).toDouble());
        System.out.println();

        // Test with negative numbers
        System.out.println("=== NEGATIVE NUMBERS ===");
        Rational neg1 = new Rational(-2, 3);
        Rational neg2 = new Rational(4, -5);
        System.out.println("neg1 = " + neg1);  // Should show -2/3
        System.out.println("neg2 = " + neg2);  // Should show -4/5
        System.out.println("neg1 + neg2 = " + neg1.add(neg2));
        System.out.println("-2/3 + -4/5 = (-10/15 + -12/15) = -22/15");
        System.out.println("neg1 * neg2 = " + neg1.multiply(neg2));
        System.out.println("(-2/3) * (-4/5) = 8/15");
        System.out.println();

        // Test simplification
        System.out.println("=== SIMPLIFICATION ===");
        Rational r6 = new Rational(6, 8);
        Rational r7 = new Rational(10, 25);
        Rational r8 = new Rational(18, -24);
        System.out.println("6/8 simplified = " + r6);
        System.out.println("10/25 simplified = " + r7);
        System.out.println("18/-24 simplified = " + r8);
        System.out.println();

        // Test chaining operations
        System.out.println("=== CHAINING OPERATIONS ===");
        Rational result = r1.add(r2).multiply(r3).divide(r4);
        System.out.println("((r1 + r2) * r3) ÷ r4 = " + result);
        System.out.println("((1/2 + 1/3) * 3/4) ÷ 2/5 = (5/6 * 3/4) ÷ 2/5 = (15/24) ÷ 2/5 = 15/24 * 5/2 = 75/48 = 25/16");
        System.out.println("Decimal: " + result.toDouble());
        System.out.println();

        // Test integer handling
        System.out.println("=== INTEGER HANDLING ===");
        System.out.println("r5 = " + r5);  // Should show 5, not 5/1
        System.out.println("r5 + r1 = " + r5.add(r1));
        System.out.println("5 + 1/2 = 11/2");
        System.out.println("r1 * r5 = " + r1.multiply(r5));
        System.out.println("1/2 * 5 = 5/2");
        System.out.println();

        // Test exception handling
        System.out.println("=== EXCEPTION TEST ===");
        try {
            Rational invalid = new Rational(1, 0);
        } catch (IllegalArgumentException e) {
            System.out.println("Caught exception: " + e.getMessage());
        }

        try {
            Rational zero = new Rational(0, 1);
            Rational divisionByZero = r1.divide(zero);
        } catch (ArithmeticException e) {
            System.out.println("Caught division by zero: " + e.getMessage());
        }
    }
}