import components.stack.Stack; import components.stack.Stack1L; import components.stack.Stack3; /** * Customized JUnit test fixture for {@code Stack1L}. */ public class Stack1LTest extends StackTest { @Override protected final Stack constructorTest() { // TODO - fill in body // This line added just to make the program compilable. return null; } @Override protected final Stack constructorRef() { // TODO - fill in body // This line added just to make the program compilable. return null; } }