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Add script to update local snapshots from CI (#5816)

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It seems like the thresholds are too low for all tests to pass when
snapshots are generated from windows / linux. We need a better solution
to this problem, but in the meantime this script should allow
contributors to update their snapshots by downloading them from the last
CI run.
This commit is contained in:
Lucas Meurer
2025-03-25 09:19:21 +01:00
committed by GitHub
parent 390e0bfc1e
commit 903bd81313
2 changed files with 40 additions and 1 deletions
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CONTRIBUTING.md
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@@ -34,8 +34,11 @@ Browse through [`ARCHITECTURE.md`](ARCHITECTURE.md) to get a sense of how all pi
You can test your code locally by running `./scripts/check.sh`.
There are snapshots test that might need to be updated.
Run the tests with `UPDATE_SNAPSHOTS=true cargo test --workspace --all-features` to update all of them.
If CI keeps complaining about snapshots (which could happen if you don't use macOS, snapshots in CI are currently
rendered with macOS), you can instead run `./scripts/update_snapshots_from_ci.sh` to update your local snapshots from
the last CI run of your PR (which will download the `test_results` artefact).
For more info about the tests see [egui_kittest](./crates/egui_kittest/README.md).
Snapshots and other big files are stored with git lfs. See [Working with lfs](#working-with-lfs) for more info.
Snapshots and other big files are stored with git lfs. See [Working with git lfs](#working-with-git-lfs) for more info.
If you see an `InvalidSignature` error when running snapshot tests, it's probably a problem related to git-lfs.
When you have something that works, open a draft PR. You may get some helpful feedback early!