Stack Testing

Create JUnit tests for the Stack interface.

1. Create an IDE project and add ku/util/Stack.java to your project "src" tree.
2. In the source tree, create a dummy stack with do-nothing methods. Eclipse can quickly do this for you.
   • Real stacks have a capacity set via the constructor. So you may add a DummyStack(int capacity) constructor to match this.
3. Create a separate source tree named "test" for test code (best practice).
4. In test/ku/util create a StackTest class that tests the Stack methods. For now use your dummy stack.
   • Most of the tests will fail. This is usual.
5. Download and add StackFactory.jar to your project.
6. In StackTest, create a real stack using:

    Stack stack = StackFactory.makeStack( capacity );

7. StackFactory produces 3 kinds of Stack. The default is type 0 (ArrayStack). To test a different stack type, add this code:

@Before
public void before() {
     StackFactory.setStackType( 1 );  // type = 0, 1, or 2
}