@Test
public void testPeek() throws Exception {
subject.add("cows");
subject.add("sheep");
subject.add("ducks");
subject.add("mice");
subject.add("dogs");
subject.add("cats");
subject.add("birds");
int size = subject.size();
Assert.assertEquals(7, size);
String animal = subject.peek();
Assert.assertEquals("cows", animal);
size = subject.size();
Assert.assertEquals(7, size);
}
@Test
public void testClear() throws Exception {
subject.add("cows");
subject.add("sheep");
subject.add("ducks");
subject.add("mice");
subject.add("dogs");
subject.add("cats");
subject.add("birds");
subject.clear();
int size = subject.size();
Assert.assertEquals(0, size);
subject.add("birds");
size = subject.size();
Assert.assertEquals(1, size);
}
@Test
public void testToArray() throws Exception {
subject.add("cows");
subject.add("sheep");
subject.add("ducks");
subject.add("mice");
subject.add("dogs");
subject.add("cats");
subject.add("birds");
int size = subject.size();
Assert.assertEquals(7, size);
Object[] animals = subject.toArray();
Assert.assertEquals(7, animals.length);
}
@Test
public void testPoll() throws Exception {
subject.add("cows");
subject.add("sheep");
subject.add("ducks");
subject.add("mice");
subject.add("dogs");
subject.add("cats");
subject.add("birds");
int size = subject.size();
Assert.assertEquals(7, size);
String animal = subject.poll();
Assert.assertEquals("cows", animal);
size = subject.size();
Assert.assertEquals(6, size);
animal = subject.poll();
Assert.assertEquals("sheep", animal);
size = subject.size();
Assert.assertEquals(5, size);
animal = subject.poll();
Assert.assertEquals("ducks", animal);
size = subject.size();
Assert.assertEquals(4, size);
animal = subject.poll();
Assert.assertEquals("mice", animal);
size = subject.size();
Assert.assertEquals(3, size);
animal = subject.poll();
Assert.assertEquals("dogs", animal);
size = subject.size();
Assert.assertEquals(2, size);
animal = subject.poll();
Assert.assertEquals("cats", animal);
size = subject.size();
Assert.assertEquals(1, size);
animal = subject.poll();
Assert.assertEquals("birds", animal);
size = subject.size();
Assert.assertEquals(0, size);
animal = subject.poll();
Assert.assertEquals(null, animal);
}
@Test(expected = NoSuchElementException.class)
public void testRemove() throws Exception {
subject.add("cows");
subject.add("sheep");
subject.add("ducks");
subject.add("mice");
subject.add("dogs");
subject.add("cats");
subject.add("birds");
int size = subject.size();
Assert.assertEquals(7, size);
String animal = subject.remove();
Assert.assertEquals("cows", animal);
size = subject.size();
Assert.assertEquals(6, size);
animal = subject.remove();
Assert.assertEquals("sheep", animal);
size = subject.size();
Assert.assertEquals(5, size);
animal = subject.remove();
Assert.assertEquals("ducks", animal);
size = subject.size();
Assert.assertEquals(4, size);
animal = subject.remove();
Assert.assertEquals("mice", animal);
size = subject.size();
Assert.assertEquals(3, size);
animal = subject.remove();
Assert.assertEquals("dogs", animal);
size = subject.size();
Assert.assertEquals(2, size);
animal = subject.remove();
Assert.assertEquals("cats", animal);
size = subject.size();
Assert.assertEquals(1, size);
animal = subject.remove();
Assert.assertEquals("birds", animal);
size = subject.size();
Assert.assertEquals(0, size);
animal = subject.remove();
}