Files
Ed Santiago 1cf2b3eb28 compose test: ongoing efforts to diagnose flakes
Yay, we got a failure with the new code (#10017). It shows
one ECONNRESET followed by a lot of ECONNREFUSED over an 8-second
period (actually 15s because of the second curl retry).

My hunch: the container itself is dying. No amount of retrying
will get anything to work. So, instead of the curl retry, if
curl fails, run 'docker-compose logs', 'podman ps', and 'ss -tulpn'
and hope that one/more of those tells us something useful when
the test flakes again.

Also: DUH! Bitten by one of the most common bash pitfalls.
Checking exit status after 'local' will always be zero.
Split the declaration and the action into separate lines.

Also: if curl fails, return immediately. There's no point in
running the string output comparison.

Also: in _show_ok(), don't emit "actual/expect" messages
if both strings are empty.

Signed-off-by: Ed Santiago <santiago@redhat.com>
2021-04-14 12:32:20 -06:00
..
2020-12-11 10:07:13 -06:00
2020-12-11 10:07:13 -06:00

Tests for docker-compose

This directory contains tests for docker-compose under podman.

Each subdirectory must contain one docker-compose.yml file along with all necessary infrastructure for it (e.g. Containerfile, any files to be copied into the container, and so on.

The test-compose script will, for each test subdirectory:

  • set up a fresh podman root under an empty working directory;
  • run a podman server rooted therein;
  • cd to the test subdirectory, and run docker-compose up -d;
  • source tests.sh;
  • run docker-compose down.

As a special case, setup.sh and teardown.sh in the test directory will contain commands to be executed prior to docker-compose up and after docker-compose down respectively.

tests.sh will probably contain commands of the form

 test_port 12345 = 'hello there'

Where 12345 is the port to curl to; '=' checks equality, '~' uses expr to check substrings; and 'hello there' is a string to look for in the curl results.

Usage:

$ sudo test/compose/test-compose [pattern]

By default, all subdirs will be run. If given a pattern, only those subdirectories matching 'pattern' will be run.

If $COMPOSE_WAIT is set, test-compose will pause before running docker-compose down. This can be helpful for you to debug failing tests:

$ env COMPOSE_WAIT=1 sudo --preserve-env=COMPOSE_WAIT test/compose/test-compose

Then, in another window,

# ls -lt /var/tmp/
# X=/var/tmp/test-compose.tmp.XXXXXX <--- most recent results of above
# podman --root $X/root --runroot $X/runroot ps -a
# podman --root $X/root --runroot $X/runroot logs -l