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Unit Testing
A unit test tests a small “unit” of code - usually a function or method - independently from the rest of the program.
Some key advantages of unit testing include:
- Isolates code - This allows testing individual units in isolation from other parts of the codebase, making bugs easier to identify.
- Early detection - Tests can catch issues early in development before code is deployed, saving time and money.
- Regression prevention - Existing unit tests can be run whenever code is changed to prevent new bugs or regressions.
- Facilitates changes - Unit tests give developers the confidence to refactor or update code without breaking functionality.
- Quality assurance - High unit test coverage helps enforce quality standards and identify edge cases.
Every language has its unit testing framework. In Python, some popular ones are
- unittest
- pytest
- doctest
- testify
Example:
Using Pytest & UV
git clone https://github.com/gchandra10/pytest-demo.git
Using Unittest & Poetry
git clone https://github.com/gchandra10/python_calc_unittests