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MyArrayListTest.java
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298 lines (257 loc) · 6.63 KB
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//import static org.junit.Assert.*;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
import static org.hamcrest.CoreMatchers.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import Array.MyArrayList;
import org.junit.Before;
import org.junit.Test;
// import org.junit.jupiter.api.Test;
/**
* @author downey
*
*/
public class MyArrayListTest {
protected List<Integer> mylist;
protected List<Integer> list;
/**
* @throws Exception
*/
@Before
public void setUp() throws Exception {
list = new ArrayList<Integer>();
list.add(1);
list.add(2);
list.add(3);
mylist = new MyArrayList<Integer>();
mylist.addAll(list);
}
/**
* Test method for {@link MyArrayList#MyArrayList()}.
*/
@Test
public void testMyList() {
assertThat(mylist.size(), is(3));
}
/**
* Test method for {@link MyArrayList#add(Object)}.
*/
@Test
public void testAddT() {
for (int i = 4; i < 20; i++) {
mylist.add(i);
}
//System.out.println(Arrays.toString(mal.toArray()));
assertThat(mylist.get(18), is(19));
}
/**
* Test method for {@link MyArrayList#add(int, Object)}.
*/
@Test
public void testAddIntT() {
mylist.add(1, 5);
//System.out.println(Arrays.toString(mal.toArray()));
assertThat(mylist.get(1), is(5));
assertThat(mylist.size(), is(4));
try {
mylist.set(-1, 0);
fail();
} catch (IndexOutOfBoundsException e) {} // good
try {
mylist.set(4, 0);
fail();
} catch (IndexOutOfBoundsException e) {} // good
mylist.add(0, 6);
//System.out.println(Arrays.toString(mal.toArray()));
assertThat(mylist.get(0), is(6));
mylist.add(5, 7);
//System.out.println(Arrays.toString(mal.toArray()));
assertThat(mylist.get(5), is(7));
}
/**
* Test method for {@link MyArrayList#addAll(java.util.Collection)}.
*/
@Test
public void testAddAllCollectionOfQextendsT() {
mylist.addAll(list);
mylist.addAll(list);
mylist.addAll(list);
assertThat(mylist.size(), is(12));
assertThat(mylist.get(5), is(3));
}
/**
* Test method for {@link MyArrayList#clear()}.
*/
@Test
public void testClear() {
mylist.clear();
assertThat(mylist.size(), is(0));
}
/**
* Test method for {@link MyArrayList#contains(Object)}.
*/
@Test
public void testContains() {
assertThat(mylist.contains(1), equalTo(true));
assertThat(mylist.contains(4), equalTo(false));
assertThat(mylist.contains(null), equalTo(false));
mylist.add(null);
assertThat(mylist.contains(null), equalTo(true));
}
/**
* Test method for {@link MyArrayList#containsAll(java.util.Collection)}.
*/
@Test
public void testContainsAll() {
assertThat(mylist.containsAll(list), equalTo(true));
}
/**
* Test method for {@link MyArrayList#get(int)}.
*/
@Test
public void testGet() {
assertThat(mylist.get(1), is(2));
}
/**
* Test method for {@link MyArrayList#indexOf(Object)}.
*/
@Test
public void testIndexOf() {
assertThat(mylist.indexOf(1), is(0));
assertThat(mylist.indexOf(2), is(1));
assertThat(mylist.indexOf(3), is(2));
assertThat(mylist.indexOf(4), is(-1));
}
/**
* Test method for {@link MyArrayList#indexOf(Object)}.
*/
@Test
public void testIndexOfNull() {
assertThat(mylist.indexOf(null), is(-1));
mylist.add(null);
assertThat(mylist.indexOf(null), is(3));
}
/**
* Test method for {@link MyArrayList#isEmpty()}.
*/
@Test
public void testIsEmpty() {
assertThat(mylist.isEmpty(), equalTo(false));
mylist.clear();
assertThat(mylist.isEmpty(), equalTo(true));
}
/**
* Test method for {@link MyArrayList#iterator()}.
*/
@Test
public void testIterator() {
Iterator<Integer> iter = mylist.iterator();
assertThat(iter.next(), is(new Integer(1)));
assertThat(iter.next(), is(new Integer(2)));
assertThat(iter.next(), is(new Integer(3)));
assertThat(iter.hasNext(), equalTo(false));
}
/**
* Test method for {@link MyArrayList#lastIndexOf(Object)}.
*/
@Test
public void testLastIndexOf() {
mylist.add(2);
assertThat(mylist.lastIndexOf(new Integer(2)), is(3));
}
/**
* Test method for {@link MyArrayList#remove(Object)}.
*/
@Test
public void testRemoveObject() {
boolean flag = mylist.remove(new Integer(2));
assertThat(flag, equalTo(true));
assertThat(mylist.size(), is(2));
assertThat(mylist.get(1), is(new Integer(3)));
//System.out.println(Arrays.toString(mal.toArray()));
flag = mylist.remove(new Integer(1));
assertThat(flag, equalTo(true));
assertThat(mylist.size(), is(1));
assertThat(mylist.get(0), is(new Integer(3)));
//System.out.println(Arrays.toString(mal.toArray()));
flag = mylist.remove(new Integer(5));
assertThat(flag, equalTo(false));
assertThat(mylist.size(), is(1));
assertThat(mylist.get(0), is(new Integer(3)));
//System.out.println(Arrays.toString(mal.toArray()));
flag = mylist.remove(new Integer(3));
assertThat(flag, equalTo(true));
assertThat(mylist.size(), is(0));
//System.out.println(Arrays.toString(mal.toArray()));
}
/**
* Test method for {@link MyArrayList#remove(int)}.
*/
@Test
public void testRemoveInt() {
Integer val = mylist.remove(1);
assertThat(val, is(new Integer(2)));
assertThat(mylist.size(), is(2));
assertThat(mylist.get(1), is(new Integer(3)));
}
/**
* Test method for {@link MyArrayList#removeAll(java.util.Collection)}.
*/
@Test
public void testRemoveAll() {
mylist.removeAll(list);
assertThat(mylist.size(), is(0));
}
/**
* Test method for {@link MyArrayList#set(int, Object)}.
*/
@Test
public void testSet() {
Integer val = mylist.set(1, 5);
assertThat(val, is(new Integer(2)));
val = mylist.set(0, 6);
assertThat(val, is(new Integer(1)));
val = mylist.set(2, 7);
assertThat(val, is(new Integer(3)));
// return value should be 2
// list should be [6, 5, 7]
assertThat(mylist.get(0), is(new Integer(6)));
assertThat(mylist.get(1), is(new Integer(5)));
assertThat(mylist.get(2), is(new Integer(7)));
//System.out.println(Arrays.toString(mal.toArray()));
try {
mylist.set(-1, 0);
fail();
} catch (IndexOutOfBoundsException e) {} // good
try {
mylist.set(4, 0);
fail();
} catch (IndexOutOfBoundsException e) {} // good
}
/**
* Test method for {@link MyArrayList#size()}.
*/
@Test
public void testSize() {
assertThat(mylist.size(), is(3));
}
/**
* Test method for {@link MyArrayList#subList(int, int)}.
*/
@Test
public void testSubList() {
mylist.addAll(list);
List<Integer> sub = mylist.subList(1, 4);
assertThat(sub.get(1), is(new Integer(3)));
}
/**
* Test method for {@link MyArrayList#toArray()}.
*/
@Test
public void testToArray() {
Object[] array = mylist.toArray();
assertThat((Integer)array[0], is(new Integer(1)));
}
}