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ci: keep crash diagnostics when the test app dies or hangs - #2109
When the test app dies, shows ErrorReportActivity, or never writes its results, try_to_find_test_result_file.js prints adb logcat -d --pid=<app pid> into the job log and exits. That filter drops exactly the lines that explain a failure, because other processes log them:
crash_dump's native backtrace (tag DEBUG)
ActivityManager's process-death and ANR lines
low-memory-killer kills
The workflow uploads only the results XML, which doesn't exist when the app dies, so nothing else survives the runner. A recent run on #2067 shows the result. The app logged nothing for about 40 s and then disappeared, and the job log can't tell a native crash from an ANR or low-memory kill, or from a hang.
New behavior
On any of those three failure paths, the harness writes the following to test-app/dist/crash-diagnostics/:
File
Contents
logcat.txt
logcat from main, system and crash, not filtered by pid, from the existing start-time cutoff
logcat-app.txt
logcat filtered to the app's pid (the old dump)
logcat-crash.txt
the crash buffer
exit-info.txt
dumpsys activity exit-info for the app; each record carries the exit reason (native crash, crash, ANR, low memory, signaled)
stacks.txt
debuggerd -b thread stacks, only if the app is still alive (a hang or timeout)
tombstone_NN.txt
the text tombstones written during this run
The job log gets a short summary instead of the whole dump:
the latest exit record
the crash buffer
the last 150 app log lines
the list of tombstones
The Test job uploads the folder as the android-crash-diagnostics artifact when it fails.
Tombstones and other processes' stacks need root. The harness runs adb root only when CI is set: restarting adbd breaks every other adb client of a shared local emulator. CI's emulator image (no Google Play) grants root. Locally, both are still collected when adbd already runs as root.
Nothing changes on a passing run.
Related Pull Requests
#2067: its Test job died mid-run with nothing usable in the log. That motivated this PR.
No. It only changes CI tooling. A passing CI run here shows the normal path is unaffected. The diagnostics path runs only when the app crashes, hangs or never reports, so it is exercised by the next real failure, or by a temporary commit that crashes the app on purpose.
Summary by CodeRabbit
Chores
Failed Android test runs now collect diagnostic logs and crash information, including app thread snapshots and recent tombstone data when available.
CI uploads the collected diagnostics as an artifact when the test job fails. Missing diagnostic files do not prevent the upload.
When the test app died, the harness printed only logcat filtered to the app's
pid, which drops crash_dump's backtrace, ActivityManager's death and ANR lines
and low-memory kills, and nothing was uploaded. On death, an ErrorReportActivity
or a timeout it now writes the unfiltered logcat, the crash buffer, the app's
process exit records, thread stacks if the app is still alive, and this run's
tombstones to test-app/dist/crash-diagnostics/, prints a summary, and CI uploads
the folder as an artifact on failure.
Reviewing files that changed from the base of the PR and between 6fce03c and 5b50e2e.
Files selected for processing: 1
test-app/tools/try_to_find_test_result_file.js
Walkthrough
The test script now collects device diagnostics on selected failure paths and saves them under test-app/dist/crash-diagnostics/. The pull request workflow uploads that directory as an artifact when the test job fails.
Changes: Crash diagnostics
Layer / File(s)
Summary
Collect and save device diagnostics test-app/tools/try_to_find_test_result_file.js
The script adds helpers to run adb commands and write diagnostics. It collects cutoff-filtered logcat, the latest ApplicationExitInfo record, thread stacks when the app is alive, and recent readable tombstones.
Route failures to collection and upload artifacts test-app/tools/try_to_find_test_result_file.js, .github/workflows/pull_request.yml
Process-death, ErrorReportActivity, and test-results timeout paths use the diagnostics handler. The workflow uploads the diagnostics directory when the test job fails.
sequenceDiagram
participant FailurePath
participant Script as try_to_find_test_result_file.js
participant ADB as adb
participant Directory as crash-diagnostics
participant Workflow as GitHub Actions workflow
FailurePath->>Script: invoke exitWithDiagnostics
Script->>ADB: collect device diagnostics
ADB-->>Script: return diagnostic output
Script->>Directory: write diagnostic files
Workflow->>Directory: upload after test job failure
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Possibly related PRs
NativeScript/android#2098: Both PRs change adb calls and failure handling in the test-results script, including differing approaches to adb root access.
Suggested reviewers:nathanwalker
Merge Risk: Low · previous review 6fce0
The change only affects CI diagnostics on failure paths. Logcat artifacts may come out empty if the device and host time zones differ, which weakens the diagnostics this PR adds. Passing runs are unaffected, so merging is low risk, but the time zone handling should be fixed.
Pre-merge checks: 4
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The title states the main change: CI now keeps crash diagnostics when the test app dies or hangs. The raw summary shows the test job uploads crash diagnostics as an artifact on failure, and the diagno…
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Explanation
The title states the main change: CI now keeps crash diagnostics when the test app dies or hangs. The raw summary shows the test job uploads crash diagnostics as an artifact on failure, and the diagnostics script collects logs, exit info, thread stacks, and tombstones on process-death, ErrorReportActivity, and timeout paths. The title is specific and matches the changeset. The 'ci:' prefix is conventional and accurate for workflow and tooling changes.
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Actionable comments posted: 2
Fix comments: Fix CodeRabbit comments on this PR
Prompt to fix all issues
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Inline comments:
Review comments at @test-app/tools/try_to_find_test_result_file.js:
- Around line 156-157: Update isAppAlive to provide the current live app PID,
and use that returned PID in the debuggerd command instead of the potentially
stale appPID; preserve the existing behavior when no live app is found.
- Around line 125-128: Update parseLogcatTimestamp to construct dates using UTC
setters, and request UTC output with the UTC modifier in all three logcat
captures, including the main/system/crash, appPID, and crash-buffer paths.
Preserve the existing filtering and diagnostic-writing behavior.
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Reviewing files that changed from the base of the PR and between 560b3bf and 6fce03c.
Files selected for processing: 2
.github/workflows/pull_request.yml
test-app/tools/try_to_find_test_result_file.js
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…he live pid
Logcat stamps are device-local time, so a cutoff from the host clock drops
every line when the device's time zone is behind the host's. Logcat's UTC
format modifier needs API 24, and the harness still supports API 21-23.
Use repeated -b and filter the app's lines out of the full logcat (comma-listed
buffers and --pid need API 24), skip an exit record from before this run, clear
the folder before writing, keep adb's error text when a capture is empty, and
only claim thread stacks when debuggerd produced them.
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Description
Current behavior
When the test app dies, shows
ErrorReportActivity, or never writes its results,try_to_find_test_result_file.jsprintsadb logcat -d --pid=<app pid>into the job log and exits. That filter drops exactly the lines that explain a failure, because other processes log them:crash_dump's native backtrace (tagDEBUG)The workflow uploads only the results XML, which doesn't exist when the app dies, so nothing else survives the runner. A recent run on #2067 shows the result. The app logged nothing for about 40 s and then disappeared, and the job log can't tell a native crash from an ANR or low-memory kill, or from a hang.
New behavior
On any of those three failure paths, the harness writes the following to
test-app/dist/crash-diagnostics/:logcat.txtmain,systemandcrash, not filtered by pid, from the existing start-time cutofflogcat-app.txtlogcat-crash.txtexit-info.txtdumpsys activity exit-infofor the app; each record carries the exit reason (native crash, crash, ANR, low memory, signaled)stacks.txtdebuggerd -bthread stacks, only if the app is still alive (a hang or timeout)tombstone_NN.txtThe job log gets a short summary instead of the whole dump:
The Test job uploads the folder as the
android-crash-diagnosticsartifact when it fails.Tombstones and other processes' stacks need root. The harness runs
adb rootonly whenCIis set: restarting adbd breaks every other adb client of a shared local emulator. CI's emulator image (no Google Play) grants root. Locally, both are still collected when adbd already runs as root.Nothing changes on a passing run.
Related Pull Requests
#2067: its Test job died mid-run with nothing usable in the log. That motivated this PR.
Does your pull request have unit tests?
No. It only changes CI tooling. A passing CI run here shows the normal path is unaffected. The diagnostics path runs only when the app crashes, hangs or never reports, so it is exercised by the next real failure, or by a temporary commit that crashes the app on purpose.
Summary by CodeRabbit