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2. While you wait for the lecture to start, design test cases for these two methods. • /* Returns true if the name is non-empty and • not null and not longer than 40 chars. */ • publicbooleanisValidName(String name) { • // ... • } • /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • } When designing test cases, use heuristics covered in Lecture 9.

3. /* Returns true if the name is non-empty and • not null and not longer than 40 chars. */ • publicbooleanisValidName(String name) { • // ... • } • /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • }

4. /* Returns true if the name is non-empty and not null and not longer than 40 chars. */ publicbooleanisValidName(String name) { // ... } Equivalence partitions Values null null empty “ “ , 50 Too long length = 41 Right size 40, 10

5. /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • } Equivalence partitions Values null null empty “ “ , 50 Too long length = 41 Right size 40, 10

6. /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • } Eq. partitions Values invalid Any invalid e.g. null exists Any existing name e.g. “existing guy” name new Any valid new name e.g. “new guy” score any any

7. /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • } Integration tests are choreography tests. They do not test components. They test how well the assembly of components dance together.

8. /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • storage.save(name, score); • } Do we really need these tests? Short and simple methods

9. /* Throws StorageException if name is not valid • or if name already exists in the database. */ • publicvoidsaveScore(String name, int score) • throwsStorageException { • if (!isValidName(name)) { • thrownewStorageException("invalid name"); • } • if (Storage.isFound(name)) { • thrownewStorageException("already exists"); • } • Storage.save(name, score); • } Do we really need these tests?

10. Where we are… • 1: • desc: send budget • deadline: Thu 22nd September • 2: • desc: review buddy program • deadline: Wed 21st September ..s bud

13. 1. Aim to create a gem you will be proud to wear 2. Polish, check, polish, check, polish, check,… 3. Sharpen your tools once in a while

14. Today’s theme ? Nearing completion. Gearing up for bigger projects.

15. Estimate the statement coverage of this method for these three test cases. • a) about 50% • b) about 80% • c) 100% 1 2 3 4 5 cover {a|b|c} e.g. cover c 77577 tinyurl.com/questionSMS