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ci: relay test failures as annotations (diagnose the red cell) #111

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Merged
arena-ai-coding-agent merged 1 commit into from
Sep 29, 2026
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ci: relay test failures as annotations (diagnose the red cell) #111

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18 changes: 17 additions & 1 deletion .github/workflows/elixir-ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,23 @@ jobs:
run: mix format --check-formatted
- name: Run tests
if: steps.detect.outputs.relevant == 'true'
run: mix test --trace
# Teed, so a failure can be re-emitted as an annotation below. A red
# cell whose log archive nobody can open is a red cell nobody fixes.
run: |
set -o pipefail
mix test --trace 2>&1 | tee test-output.txt
- name: Relay the failure to the Checks tab
if: failure() && steps.detect.outputs.relevant == 'true'
run: |
python3 - <<'PY'
import re
text = open("test-output.txt", errors="replace").read()
blocks = re.findall(r"\n\s+\d+\) test.*?(?=\n\n\n|\Z)", text, re.S)
detail = "\n".join(blocks) or text[-6000:]
warnings = [l for l in text.splitlines() if l.strip().startswith("warning:")]
msg = (detail + "\n--- warnings ---\n" + "\n".join(warnings[:40]))[:24000]
print("::error::" + msg.replace("%", "%25").replace("\r", "").replace("\n", "%0A"))
PY
- name: Build the escript
if: steps.detect.outputs.relevant == 'true'
run: mix escript.build
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