@Test
public void testSize() throws Exception {
int size = stack.size();
stack.push("Agh?");
assertNotEquals(size, stack.size());
assertEquals(size + 1, stack.size());
}
@Test
public void testPeek() throws Exception {
int size = stack.size();
assertTrue(size > 0);
final String top = stack.peek();
assertEquals(top, "Bazza");
// peek shouldn't remove top item from the stack
assertEquals(size, stack.size());
}
@Test
public void testPush() throws Exception {
final String item = "New top";
int size = stack.size();
stack.push(item);
assertNotEquals(size, stack.size());
assertEquals(size + 1, stack.size());
final String top = stack.peek();
assertEquals(top, item);
}
@Test
public void testPop() throws Exception {
int size = stack.size();
assertTrue(size > 0);
String top = stack.pop();
assertEquals(top, "Bazza");
assertNotEquals(size, stack.size());
top = stack.pop();
assertEquals(top, "<3");
assertEquals(size - 2, stack.size());
}
@Test
public void testIsEmpty() throws Exception {
assertFalse(stack.isEmpty());
assertNotEquals(stack.size(), 0);
}