// FILE: statexam.java
// Written by Michael Main (main@colorado.edu)for C++
// Modified for java by Barbara Boucher Owens
// This program calls five test functions to test the Statistician class.
// Maximum number of points from this program is 83
// Program as of January 14, 2003

import java.io.*;

class statexam{

    // Test program for basic Statistician functions.
    // Returns 62 if everything goes okay; otherwise returns 0.
public static int test1( )
{

    Statistician s = new Statistician();
    Statistician t = new Statistician();
    int i;
    double r = 0;

    if (s.length( )>0 || t.length( )>0) return 0;
    if (s.sum( ) >0 || t.sum( )>0) return 0;

    for (i = 1; i <= 10000; i++)
    {
	s.next(i);
	r += i;
    };

    if (t.length( )>0 || t.sum( )>0) return 0;
    if (s.length( ) != 10000) return 0;
    if (s.sum( ) != r) return 0;
    if (s.mean( ) != r/10000) return 0;

    // Reset and then retest everything
    s.clear( );
    t.clear( );
    r = 0;

    if (s.length( )>0 || t.length( )>0) return 0;
    if (s.sum( ) >0|| t.sum( )>0) return 0;

    for (i = 1; i <= 10000; i++)
    {
	s.next(i);
	r += i;
    };

    if (t.length( )>0 || t.sum( )>0) return 0;
    if (s.length( ) != 10000) return 0;
    if (s.sum( ) != r) return 0;
    if (s.mean( ) != r/10000) return 0;

    return 62;
}

public static int test2( )
{
    // Test program for minimum/maximum Statistician functions.
    // Returns 7 if everything goes okay; otherwise returns 0.

    Statistician s= new Statistician();
    Statistician t= new Statistician();
    Statistician u= new Statistician();


    double r = 1000;
    String n = "10000000000000";

    if (s.length( ) >0|| t.length( )>0) return 0;
    if (s.sum( )>0 || t.sum( )>0) return 0;


    r = 1/r;
    s.next(r);
    if ((s.minimum( ) != r) || (s.maximum( ) != r)) return 0;
    r *= -1;
    t.next(r);
    if ((t.minimum( ) != r) || (t.maximum( ) != r)) return 0;

    u.next(100); u.next(-1); u.next(101); u.next(3);
    if ((u.minimum( ) != -1) || (u.maximum( ) != 101)) return 0;

    return 7;
}

public static int test3( )
{
    // Test program for + operator of the Statistician
    // Returns 7 if everything goes okay; otherwise returns 0.

    Statistician s= new Statistician();
    Statistician t= new Statistician();
    Statistician u= new Statistician();
Statistician v= new Statistician();

    if (s.length( ) >0|| t.length( )>0) return 0;
    if (s.sum( ) >0|| t.sum( )>0) return 0;

    t.next(5);
    u.next(0); u.next(10); u.next(10); u.next(20);

    v = Statistician.union(s,s);
    //if (v.length( )>0 || v.sum( )>0) return 0;
    v = Statistician.union(s,u);
    //if (!(u == v)) System.out.println("2");//return 0;
    v = Statistician.union(t,s);
    //if (!(t == v)) System.out.println("3");//return 0;
    v = Statistician.union(t,u);
    if (v.length( ) != 5) return 0;
    if (v.sum( ) != 45) return 0;
    if (v.minimum( ) != 0) return 0;
    if (v.maximum( ) != 20) return 0;
    if (v.mean( ) != 45.0/5) return 0;
    v = Statistician.union(v,t);
    if (v.length( ) != 6) return 0;
    if (v.sum( ) != 50) return 0;
    if (v.minimum( ) != 0) return 0;
    if (v.maximum( ) != 20) return 0;
    if (v.mean( ) != 50.0/6) return 0;
    return 7;
}


public static int test5( )
{
    // Test program for == operator of the Statistician.
    // Returns 7 if everything goes okay; otherwise returns 0.


Statistician t= new Statistician();
Statistician u= new Statistician();
Statistician v= new Statistician();
Statistician s= new Statistician();
Statistician x= new Statistician();
Statistician w= new Statistician();

    if (s.length( )>0 || t.length( )>0) return 0;
    if (s.sum( )>0 || t.sum( )>0) return 0;

    t.next(10);
    u.next(0); u.next(10); u.next(10); u.next(20);
    v.next(5); v.next(0); v.next(20); v.next(15);
    w.next(0);
    x.next(0); x.next(0);

    if (!s.equals(s)) return 0;
    if (s.equals(t)) return 0;
    if (t.equals(s)) return 0;
    if (u.equals(t)) return 0;
    if (!u.equals(v)) return 0;
    if (w.equals(x)) return 0;

    return 7;
}

public static void main (String[] arg) {{
    int value = 0;
    int result;

    System.out.println("Running Statistician tests:" +  "\nTEST 1:");

    System.out.println("\nTesting next, reset, length, sum, and mean (62 points).\n");
    result = test1( );
    value += result;
    if (result > 0) System.out.println("Test 1 passed.\n");
    else System.out.println("Test 1 failed.\n\n");


    System.out.println("\nTEST 2:\n");
    System.out.println("Testing minimum and maximum member functions (7 points).\n");
    result = test2( );
    value += result;
    if (result > 0) System.out.println("Test 2 passed.\n\n");
    else System.out.println("Test 2 failed.\n\n");

    System.out.println("\nTEST 3:\n");
    System.out.println("Testing the union operator (7 points).\n");
    result = test3( );
    value += result;
    if (result > 0) System.out.println("Test 3 passed.\n\n");
    else System.out.println("Test 3 failed.\n\n");

    /*System.out.println("\nTEST 4:\n");
    System.out.println("Testing the * operator (7 points).\n");
    result = test4( );
    value += result;
    if (result > 0) System.out.println("Test 4 passed.\n\n");
    else System.out.println("Test 4 failed.\n\n"); */

    System.out.println("\nTEST 5:\n");
    System.out.println("Testing the equals operator (7 points).\n");
    result = test5( );
    value += result;
    if (result > 0) System.out.println("Test 5 passed.\n\n");
    else System.out.println("Test 5 failed.\n\n");

    System.out.println("If you submit the Statistician to Dora now, this part of the\n");
    System.out.println("grade will be " + value +" points out of 83.\n");

}

}
}