// CSE 143, Winter 2011, Marty Stepp                                         
// This JUnit testing program checks some of the basic features of our ArrayIntList.                               
// You can run it in Eclipse by right-clicking it in the Package Explorer                                   
// and choosing Run As -> Junit Test.                                 
                                              
import static org.junit.Assert.*;                                                    
import org.junit.Test;                               
                                  
public class ArrayIntListTest {                                     
    // Checks the basic functionality of the size method after adding a few elements.                                            
    @Test                                         
    public void testSize() {                                     
        ArrayIntList list = new ArrayIntList();                                                      
        list.add(42);                                     
        list.add(-3);                               
        list.add(17);                                                         
        list.add(999);                                               
        assertEquals(4, list.size());                                                     
    }                               
                                 
    // Checks the basic functionality of the isEmpty method after adding and removing.                                                  
    @Test                                     
    public void testIsEmpty() {                               
        ArrayIntList list = new ArrayIntList();                                            
        assertTrue(list.isEmpty());                                               
                                               
        list.add(42);                                           
        assertFalse(list.isEmpty());                                         
        list.add(-3);                                              
        assertFalse(list.isEmpty());                                       
                               
        list.remove(1);                                                    
        list.remove(0);                                        
        assertTrue(list.isEmpty());                                                  
    }                                               
                                                     
    // This test makes sure that the list enforces its precondition about                                       
    // the legal indexes passed to the get method.                                        
    // If an ArrayIndexOutOfBoundsException is NOT thrown, the test fails.                               
    @Test(expected = ArrayIndexOutOfBoundsException.class)                                 
    public void testGet() {                                            
        ArrayIntList list = new ArrayIntList();                                            
        list.get(17);   // this should crash                               
    }                                                    
                                        
    // Checks the basic functionality of the indexOf method after adding a few elements.                                     
    @Test                                                   
    public void testIndexOf() {                                     
        ArrayIntList list = new ArrayIntList();                               
        list.add(42);                                      
        list.add(-3);                                         
        list.add(17);                                            
        list.add(999);                                     
        list.add(17);                                                   
        list.add(86);
        assertEquals(0, list.indexOf(42));
        assertEquals(5, list.indexOf(86));
        assertEquals(2, list.indexOf(17));         // not 4!
        assertEquals(-1, list.indexOf(5555555));   // not found in list
    }
}