2022-05-03 01:31:11 -04:00
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---
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title: "Which commit broke the build? Using Git Bisect"
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date: 2022-05-03T01:15:55-04:00
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draft: false
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2022-11-12 11:22:54 -05:00
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tags: ["Git"]
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2022-05-03 01:31:11 -04:00
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math: false
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2023-01-05 14:04:45 -05:00
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medium_enabled: true
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2022-05-03 01:31:11 -04:00
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---
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Lets imagine a scenario where in the latest merge a test
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starts failing. Lets say these tests are saved
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in `test.sh`. Instead of having to test each individual
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commit in the merge, to see where the test fails, luckily
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`git bisect` narrows it down in a more efficient way!
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To use:
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```bash
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git bisect start [good] [bad]
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git bisect run test.sh
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```
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Where `[good]` and `[bad]` are replaced with their respective
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commit hashes.
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Under the hood, Git will run a binary search between the good
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and bad nodes in the commit tree.
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As a reminder, don't forget to make `test.sh` an executable.
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Starting in Git 2.36 it will provide a warning, but earlier
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versions will perform the search anyways even with it all
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failing.
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Read more: https://git-scm.com/docs/git-bisect
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