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title:
  - value: |
      Tests won't tell you if your code works
created:
  - value: '2023-06-29T00:00:00+00:00'
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  - value: '2025-05-11T09:00:38+00:00'
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body:
  - value: |
      <p>Having a passing test suite or CI pipeline doesn't tell you if your appliction works.</p>

      <p>There could be scenarios or edge-cases that aren't covered within the test suite and contain bugs, but aren't covered by the test suite.</p>

      <p>There could be untested code that isn't covered at all.</p>

      <p>A passing test suite proves that the tests that have been written so far pass and that there are no regressions introduced by the latest change.</p>

      <h2 id="here%27s-the-thing">Here's the thing</h2>

      <p>Instead of telling you that your application works by passing, the test suite tells you something is broken when it fails.</p>

      <p>If a previously-passing test is failing, the application is broken and should not be deployed - not that the application is working if the tests don't fail.</p>

              
    format: full_html
    processed: |
      <p>Having a passing test suite or CI pipeline doesn't tell you if your appliction works.</p>

      <p>There could be scenarios or edge-cases that aren't covered within the test suite and contain bugs, but aren't covered by the test suite.</p>

      <p>There could be untested code that isn't covered at all.</p>

      <p>A passing test suite proves that the tests that have been written so far pass and that there are no regressions introduced by the latest change.</p>

      <h2 id="here%27s-the-thing">Here's the thing</h2>

      <p>Instead of telling you that your application works by passing, the test suite tells you something is broken when it fails.</p>

      <p>If a previously-passing test is failing, the application is broken and should not be deployed - not that the application is working if the tests don't fail.</p>

              
    summary: null
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