/** Test method for clear. */
@Test
public void testClear() {
my_stack.clear();
// test if size decremented back to 0
assertTrue("clear() failed to decrement size", my_stack.size() == 0);
// test if top decremented back to -1
assertTrue("clear() failed to decrement top", my_stack.size() - 1 == -1);
}
/** Test method for Pop. */
@Test
public void testPop() {
pushElements();
final String return_value = my_stack.pop();
// test if the right element is returned; popped element should be "World"
assertTrue("pop() returned the wrong element!", "World".equals(return_value));
// test size was decremented; size should be 1
assertTrue("pop() didn't decrement size correctly!", my_stack.size() == 1);
// test top was decremented; top should be 0
assertTrue("pop() didn't decrement top correctly!", my_stack.size() - 1 == 0);
}
/** Test method for Size. */
@Test
public void testSize() {
pushElements();
// test if size is correct; size should be 2
assertTrue("size() returned the wrong size!", my_stack.size() == 2);
}
/** Test method for Push. */
@Test
public void testPush() {
pushElements();
// test size was incremented correctly after two pushes; size should be 2
assertTrue("push() failed to increment size", my_stack.size() == 2);
// test top was incremented correctly after two pushes; top should be 1
assertTrue("push() failed to increment top", my_stack.size() - 1 == 1);
final String return_value1 = my_stack.pop();
// test if top element is in correct position; element should be "World"
assertTrue("push() failed to put element in correctly!", "World".equals(return_value1));
final String return_value2 = my_stack.pop();
// test if the last element is in correct position; element should be "Hello"
assertTrue("push() failed to put element in correctly!", "Hello".equals(return_value2));
}
/** Test method for Generic Simple Array Stack. */
@Test
public void testGenericSimpleArrayStack() {
assertTrue("New Stack should be empty. Size should equal 0", my_stack.size() == 0);
}