The document discusses various types of software testing including unit testing, functional testing, system testing, performance testing, and acceptance testing. It provides examples of unit test frameworks for different programming languages. Test-driven development and using continuous integration tools are advocated to improve testing practices and prevent code that does not work from being deployed. Challenges of testing like the difficulty of testing distributed systems are also outlined.

1. Testing Steve Loughran HP Laboratories June 9th, 2008

4. your code doesn't work

5. I know this because...

6. my code doesn't work

7. it's OK to write code that doesn’t work

8. but not to ship it

9. especially when it matters

10. how do you get from "broken" to "shipping"?

11. Device Drivers ship and see test it! Test-Driven  x:  y : f ( y , x) > 0 Formal Methods prove it works

14. Test Driven Development any feature without a test doesn’t exist

18. public class LessSimpleTest extends TestCase { public LessSimpleTest (String s) { super(s); } public void testAssignment() { final Date date = new Date(); Event event = new Event(UUID.randomUUID(), date, "now", "Text"); assertEquals("self equality failed", event, event); assertEquals(date, event.getDate()); assertNotNull(date.getID()); } }

19. swing GUI TestRunner

20. Ant-generated report scales better; reports published

21. Continuous Integration see: CruiseControl, Hudson, LuntBuild

22. ==> blame assignment whose change broke the build?

26. politics: resistance to change