Your SlideShare is downloading. ×
  • Like
Test Driven Development in Python
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.


Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Test Driven Development in Python



Published in Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads


Total Views
On SlideShare
From Embeds
Number of Embeds



Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

    No notes for slide


  • 1. Test Driven Development in Python Anoop Thomas Mathew Agiliq Info Solutions Pvt. Ltd.
  • 2. Overview● About TDD● TDD and Python● unittests● Developing with Tests● Concluding Remarks● Open Discussion
  • 3. “ Walking on water and developing software from a specification are easy if both are frozen. ” - Edward V Berard
  • 4. About Test Driven Development (TDD)● Write tests for the use case● Run it (make sure it fails and fails miserably)● Write code and implement the required functionality with relevant level of detail● Run the test● Write test for addition features● Run all test● Watch it succeed. Have a cup of coffee !
  • 5. Advantages of TDD● application is determined by using it● written minimal amount of application code – total application + tests is probably more – objects: simpler, stand-alone, minimal dependencies● tends to result in extensible architectures● instant feedback
  • 6. Unittestimport unittestclass MyTest(unittest.TestCase): def testMethod(self): self.assertEqual(1 + 2, 3, "1 + 2 !=3")if __name__ == __main__: unittest.main()
  • 7. import unittestfrom demo import Greater The Testclass DemoTest(unittest.TestCase): def test_number(self): comparator = Greater() result = comparator.greater(10,5) self.assertTrue(result) def test_char(self): comparator = Greater() result = comparator.greater(abcxyz, AB) self.assertTrue(result) def test_char_equal(self): comparator = Greater() result = comparator.greater(4, 3) self.assertTrue(result)if __name__ == __main__: unittest.main()
  • 8. class Greater(object): The Program def greater(self, val1, val2): if type(val1) ==str or type(val2) == str: val1 = str(val1) val2 = str(val2) sum1 = sum([ord(i) for i in val1]) sum2 = sum([ord(i) for i in val2]) if sum1 > sum2: return True else: return False if val1>val2: return True else: return False
  • 9. Test Again1. Add new test for features/bugs2. Resolve the issue, make the test succeed.3. Iterate from Step 1
  • 10. Beware!!!Murphy is everywhere.
  • 11. Lets Discuss