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Testing

Code Coverage
When a measure becomes a target, it ceases to be a good measure.
Avoiding Logic in Tests
A test shouldn't mirror the code logic it’s meant to validate.
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Test-Driven Development (TDD)
TDD is a personal choice, not a measure of test quality.
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Test Behavior, Not Implementation
By focusing on behavior, our test remains the same, unaffected by changes to the underlying implementation.
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Teiva Harsanyi
Unit Tests As Documentation
Unit tests are always in sync with the code, making them a poweful tool for up-to-date documentation.
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Teiva Harsanyi
Line vs. Branch Coverage
In this example, branch coverage will detect that our test only covers 50% of the possible branches.
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Teiva Harsanyi
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10 Unit Test Properties
Narrow in scope, validating the correctness of individual pieces of code rather than the correctness of the system as a whole.
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Teiva Harsanyi
Common Arguments Against Unit Tests
Skipping unit tests might seem like a time-saver, but it often leads to greater problems later.
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Teiva Harsanyi
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