Testing Superpowers: Using CLion to Add Tests Easily
- 1. Testing Superpowers: Using CLion to Add Tests Easily Clare Macrae, 16 February 2021 @ClareMacraeUK clare@claremacrae.co.uk
- 2. Topics Testing with Catch2 Testing with Approval Tests Using Code Coverage Improving the tests CLion testing tips (if time) 2
- 4. Previously, on JetBrains Webinars… “Before we start refactoring, we want to add tests” “The tests are green, so we can start refactoring” “What if we don’t have tests?” “It’s a pre-requisite for any refactoring” 4
- 5. What if we don’t have tests?
- 6. Goals Add tests for untested code, quickly and safely 01 Show the power of Approval Tests to get good coverage quickly & explore the code 02 Use Code Coverage tools in CLion to guide your testing 03 6
- 7. Let’s look at the code 7
- 9. What happened? Testing multi-line strings in code is hard! Listen to the PAIN! 9
- 11. Approval Tests allow you to verify a chunk of output (such as a file) in one operation as opposed to writing test assertions for each element 11
- 12. Approval Tests overview 12 The Power of Approval Tests: Simple to use File naming and creation See failures Updating expected output It just works! Roll your own?
- 15. “I have some problems with the line endings” 15
- 16. Scrubber Namer Writer Comparator Pass Fail Reporter Customisation Points 16
- 19. Code Coverage 19
- 20. CLion Auto-creates configuration – Amazing! 20
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- 24. What next (for me?) (Learn to) Set up plugin on my Windows VM Add this to Jay Bazuzi’s ‘machine-setup’ repo Contribute to Plugin docs 24
- 27. Formatting and readability Fake it ‘til you make it! 27
- 29. What tests to run? 29
- 30. Know the Test Runner Tab 30
- 33. Conclusions 33
- 34. Thanks! JetBrains for CLion! Markus Böck C/C++ Coverage Plugin 34
- 35. Tactics 35 ASSUME TESTS ARE POSSIBLE LISTEN TO THE PAIN COVERAGE IS TO HELP YOU