The tests were flaky because they used hard-coded time.After(550ms)
waits, which had only 50ms margin over WaitForPendingReadersInTimeRange's
500ms poll interval. On slow CI runners, this margin wasn't reliable.
Use synctest for deterministic time control:
- Wrap test logic in synctest.Test() to use fake time
- Use synctest.Wait() to let goroutines reach dormant state
- Use time.Sleep() to advance fake time past the poll interval
- No more timing-dependent assertions
This makes the tests both reliable and ~60x faster (0.05s vs 3s).
Fixes both TestWaitForPendingReadersInTimeRange and
TestWaitForPendingReadersInTimeRange_AppenderV2.
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
Add automatic cleanup to newTestHeadWithOptions so that heads created
with newTestHead are automatically closed when the test ends. This
simplifies test code by removing the need for manual cleanup in most
cases.
Changes:
- Add t.Cleanup in newTestHeadWithOptions immediately after creating
the head, using _ = h.Close() to handle double-close gracefully
- Remove redundant t.Cleanup, defer, and explicit Close calls from
tests that use newTestHead
- Add cleanup for heads created with NewHead directly in restart
patterns (e.g., restartHeadAndVerifySeriesCounts, startHead)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
find . -name "*.go" -type f -exec sed -E -i \
's/([^[:alpha:]]sample\{)([^,{:]+,[^,]+,[^,]+,[^,]+\})/\10, \2/g' {} +
I've omitted tsdb/ooo_head.go from the commit because I'm also adding todo
there.
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
