1. Unit Testing Continuous Integration PYUNIT AND JENKINS FRAMEWORK Presenter Rachita Agasthy

2. Unit Testing Goal – Isolate parts of the code, test their individual working. Why do Unit testing? Unit testing is a part of most of software development methodologies in use today Agile Methodologies Extreme Programming Test Driven Development

3. Advantages and Disadvantages Advantages Reduction in flaws – Statistics suggest 90% reduction in bugs during QA process Repeatability – Can reuse the same tests as and when you make changes Disadvantages Requires approximately 30% more time at the start of the project Written by developer, not possible to cover all the cases Frameworks Available – GUnit(C++), JUnit(Java), PyUnit(Python), test-unit(Ruby) and so on.

4. Unit testing example - PyUnit class Calculator(object): def add(self, value1, value2): return value1 + value2 Actual Code:Test Code: class CalculatorUnitTest(unittest.TestCase): def setup(self): // Code that is common to every // test in this class. myCalculator = Calculator() def test_add(self): // Positive value addition result = myCalculator.add(100, 20) errMsg = “Expected 120 but got ”+ result assert result == 120, errMsg // Negative value addition result = myCalculator.add(-10, -20) errMsg = “Expected -30 but got ”+ result assert result == -30, errMsg if __name__ == "__main__": unittest.main()

5. Mocking in Unit Tests class Calculator(object): def add(self, value1, value2): return value1 + value2 def multiply(self, value1, value2): result_arr = [] for i in xrange(0,value2/2) result.append(add(value1, value1) if value2 % 2 != 0: result = value1 for value in result_arr: result = result + value1; return result Actual Code:Test Code: class CalculatorUnitTest(unittest.TestCase): def setup(self): // Code that is common to every // test in this class. myCalculator = Calculator() def test_multiply(self): val1 = 10 val2 = 20 // Positive value multiplication myCalculator.add = MagicMock(return_value = 20) result = myCalculator.multiply(val1, val2) errMsg = “Expected 200 but got ”+ result assert result == 200, errMsg if __name__ == "__main__": unittest.main()

6. Continuous Integration Development work is integrated at a predefined time or event Resulting work is automatically tested and built Advantage ◦Automated Unit Testing ◦Development errors are identified very early in the process ◦Continuous Quality Control Usage: Extensively used in Extreme Programming Frameworks Available – CruiseControl, Jenkins, Buildbot and so on.

7. Jenkins Open source Java based tool. Basic functionality ◦Detect code changes in the code repository ◦Build different parts of the code ◦Run unit tests ◦Run the different components of the system ◦Verify the output ◦In case of failures, notify the developer who caused the failure. ◦Also notify other developers Requirements ◦Requires installation on the server ◦Accessible through a web page

8. Homepage

9. Creating new Job

10. Enter Job Details

11. Advanced Job Options

12. When to run the job?

13. What happens when job runs?

14. Other features ◦Managing Jenkins

15. More managing options

16. Thank you!