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Week 11 [Oct 28]

Suggested tutorial activities:

Demo

Two members together do a quick demo of your v1.3 using the jar file

Suggested tutorial activity

Test case design

Whole team: do this question together, using the whiteboard

Apply heuristics for combining multiple test inputs to improve the E&E of the following test cases, assuming all 6 values in the table need to be tested. underlines indicate invalid values. Point out where the heuristics are contradicted and how to improve the test cases.

SUT: consume(food, drink)

Test case	food	drink
TC1	bread	water
TC2	rice	lava
TC3	rock	acid

Questions

Divide the following questions among team members and get ready to answer them.

What is Liskov Substitution Principle?
Give an example from the project where LSP is followed and explain how to change the code to break LSP.
Explain how Law of Demeter affects coupling
a. Add a line to this code that violates LoD
```
void foo(P p){
    //...
}
```
Give an example in the project code that violates the Law of Demeter.

Q2. Design patterns.

When do you use MVC pattern?
When do you use the Singleton pattern, Command pattern?

Q3. Process models

Distinguish between sequential and iterative processes. Which one are we using in the project?
Distinguish between breadth-first and depth-first iterative processes using your project as an example.
Describe how agile process models differ from traditional process models.

Q4. XP and Scrum

(Divide XP and Scrum between the two teams for the following activity, if there is enough time left.)

Each team use the Web to find about 5 distinguishing features of the process model.
- Some interesting SCRUM concepts: Product backlog, scrum board, story points, burndown charts, scrum master, product owner
- XP rules are described at http://www.extremeprogramming.org/rules.html
Relate those features to your project. i.e. are they applicable? are you doing something similar?