Unit Theory

Question 1

What is pyunit

Answer 1

Unit testing framework for python
Advocates first testing then coding
Set up test data for a piece of code
Test the test set up
Write the code
Then unit test the code using test set up
Can increase programme productivity

Question 2

Why use unit tests

Answer 2

Help developers verify that the logic of a piece of code is correct
Re performing unit tests can identify software regressions introduced by changes in the code
May not be suitable for all code

Question 3

What happens when unit tests fails

Answer 3

For an individual programmer - compilation will fail until unit test passes
For a group programming together - the group build will fail unless all unit tests pass

Question 4

Continuous integration

Answer 4

Development practice that requires developers to integrate code into a shared repository several times a day
Each check in verified by an automated build allowing teams to detect problems early
Automated builds are inherently associated with unit testing

Question 5

Pyunit

Answer 5

Runs automatically
Checks results automatically and flags errors
No errors mean all test passed
Tests can be organised into suites of test cases
Quicker than manual testing

Question 6

Pyunit test case

Answer 6

Piece of code that checks another piece of code works as expected
Testing framework that enables us to quickly develop execute and re execute unit test cases for pythonccode
A known input and expected output
Both input and expected outputs are identified before the test is executed

Question 7

How many unit test cases

Answer 7

At least two unit test cases
One positive and negative test

Question 8

Positive test cases

Answer 8

Testing for something that should happen does happen

Question 9

Negative testing

Answer 9

Testing for something that should not happen does not happen