package math;
import jmunit.framework.cldc11.*;

public class ArithmeticTest extends TestCase {
    
    private double[] pi_vars;
    
    /**
     * Test of getInstance method, of class math.Arithmetic.
     */
    public void testgetInstance() throws AssertionFailedException {
        System.out.println("getInstance");
        math.Arithmetic instance = Arithmetic.getInstance();
        math.Arithmetic expectedResult = Arithmetic.getInstance();
        math.Arithmetic result = instance.getInstance();
        assertEquals(expectedResult, result);
    }
    
    /**
     * Test of add method, of class math.Arithmetic.
     */
    public void testadd() throws AssertionFailedException {
        System.out.println("add");
        math.Arithmetic instance = Arithmetic.getInstance();
        for (int a=0;a<=10;a++)
            for (int b=0;b<=10;b++) {
            int expectedResult = a+b;
            int result = instance.add(a,b);
            assertEquals(expectedResult, result);
            }
    }
    
    /**
     * Test of substract method, of class math.Arithmetic.
     */
    public void testsubstract() throws AssertionFailedException {
        System.out.println("substract");
        math.Arithmetic instance = Arithmetic.getInstance();
        for (int a=0;a<=10;a++)
            for (int b=0;b<=10;b++) {
            int expectedResult = a-b;
            int result = instance.substract(a,b);
            assertEquals(expectedResult, result);
            }
    }
    
    /**
     * Test of multiply method, of class math.Arithmetic.
     */
    public void testmultiply() throws AssertionFailedException {
        System.out.println("multiply");
        math.Arithmetic instance = Arithmetic.getInstance();
        for (int a=0;a<=10;a++)
            for (int b=0;b<=10;b++) {
            int expectedResult = a*b;
            int result = instance.multiply(a,b);
            assertEquals(expectedResult, result);
            }
    }
    
    /**
     * Test of divide method, of class math.Arithmetic.
     */
    public void testdivide() throws AssertionFailedException {
        System.out.println("divide");
        math.Arithmetic instance = Arithmetic.getInstance();
        for (int a=1;a<=10;a++)
            for (int b=1;b<=10;b++) {
            double expectedResult = a/b;
            /* In order to make this not fail we must cast each
             * variable before the divide operation
             *
             * double expectedResult = (double) a/(double) b;
             */
            double result = instance.divide(a,b);
            assertEquals(expectedResult, result);
            }
    }
    
    /**
     * Test of sin method, of class math.Arithmetic.
     */
    public void testsin() throws AssertionFailedException {
        System.out.println("sin");
        math.Arithmetic instance = math.Arithmetic.getInstance();
        
        for (int i=0;i<pi_vars.length;i++) {
            double expectedResult=Math.sin(pi_vars[i]);
            double result=instance.sin(pi_vars[i]);
            assertEquals(expectedResult, result);
        }
    }
    
    /**
     * Test of cos method, of class math.Arithmetic.
     */
    public void testcos() throws AssertionFailedException {
        System.out.println("cos");
        math.Arithmetic instance = math.Arithmetic.getInstance();
        
        for (int i=0;i<pi_vars.length;i++) {
            double expectedResult=Math.sin(pi_vars[i]);
            double result=instance.sin(pi_vars[i]);
            assertEquals(expectedResult, result);
        }
    }
    
    public ArithmeticTest() {
        super(7,"ArithmeticTest");
    }
    
    public void setUp() {
        this.pi_vars=new double[] {0,1.57,-1.57,3.14,-3.14,6.28,-6.28};
    }
    
    public void tearDown() {
        this.pi_vars=null;
        java.lang.Runtime.getRuntime().gc();
    }
    
    public void test(int testNumber) throws Throwable {
        switch(testNumber) {
            case 0:testgetInstance();break;
            case 1:testadd();break;
            case 2:testsubstract();break;
            case 3:testmultiply();break;
            case 4:testdivide();break;
            case 5:testsin();break;
            case 6:testcos();break;
            default: break;
        }
    }
}