32 lines
1 KiB
Markdown
32 lines
1 KiB
Markdown
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---
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title: Good software is easy to test
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date: 2025-02-03
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permalink: daily/2025/02/03/testable
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tags:
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- software-development
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- testing
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cta: testing_course
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snippet: |
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Good software is easy to write automated tests for.
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---
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One piece of criteria for whether some software is good is whether it's easy to write automated tests for.
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I recently worked on a method that was more than 150 lines.
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It was difficult to understand, had too many responsibilities and didn't use dependency injection.
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This made it difficult to test.
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If it was split into several smaller methods or classes, each could be responsible for different aspects and have clear responsibilities.
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Each new method or class could have its own tests to verify its own functionality works.
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It would be easy to understand and identify and fix any issues.
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If dependency injection was used, things can be mocked or changed as needed to make the logic testable.
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If everything is in one large function, the code isn't testable.
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Even if it works now, it will be difficult to change in the future.
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