new system tests under BATS

Initial attempt at writing a framework for podman system tests.
The idea is to define a useful set of primitives that will
make it easy to write actual tests and to interpret results
of failing ones.

This is a proof-of-concept right now; only a small number of
tests, by no means comprehensive. I am requesting review in
order to find showstopper problems: reasons why this approach
cannot work. Should there be none, we can work toward running
these as gating tests for Fedora and RHEL8.

Signed-off-by: Ed Santiago <santiago@redhat.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/test/system/050-stop.bats b/test/system/050-stop.bats
new file mode 100644
index 000000000..d04e22606
--- /dev/null
+++ b/test/system/050-stop.bats
@@ -0,0 +1,65 @@
+#!/usr/bin/env bats
+
+load helpers
+
+# Very simple test
+@test "podman stop - basic test" {
+    run_podman run -d $PODMAN_TEST_IMAGE_FQN sleep 60
+    cid="$output"
+
+    # Run 'stop'. Time how long it takes.
+    t0=$SECONDS
+    run_podman stop $cid
+    t1=$SECONDS
+
+    # Confirm that container is stopped
+    run_podman inspect --format '{{.State.Status}} {{.State.ExitCode}}' $cid
+    is "$output" "exited \+137" "Status and exit code of stopped container"
+
+    # The initial SIGTERM is ignored, so this operation should take
+    # exactly 10 seconds. Give it some leeway.
+    delta_t=$(( $t1 - $t0 ))
+    [ $delta_t -gt 8 ]  ||\
+        die "podman stop: ran too quickly! ($delta_t seconds; expected >= 10)"
+    [ $delta_t -le 14 ] ||\
+        die "podman stop: took too long ($delta_t seconds; expected ~10)"
+
+    run_podman rm $cid
+}
+
+
+# Test fallback
+
+
+# Regression test for #2472
+@test "podman stop - can trap signal" {
+    # Because the --time and --timeout options can be wonky, try three
+    # different variations of this test.
+    for t_opt in '' '--time=5' '--timeout=5'; do
+        # Run a simple container that logs output on SIGTERM
+        run_podman run -d $PODMAN_TEST_IMAGE_FQN sh -c \
+                   "trap 'echo Received SIGTERM, finishing; exit' SIGTERM; echo READY; while :; do sleep 1; done"
+        cid="$output"
+        wait_for_ready $cid
+
+        # Run 'stop' against it...
+        t0=$SECONDS
+        run_podman stop $t_opt $cid
+        t1=$SECONDS
+
+        # ...the container should trap the signal, log it, and exit.
+        run_podman logs $cid
+        is "$output" ".*READY.*Received SIGTERM, finishing" "podman stop $t_opt"
+
+        # Exit code should be 0, because container did its own exit
+        run_podman inspect --format '{{.State.ExitCode}}' $cid
+        is "$output" "0" "Exit code of stopped container"
+
+        # The 'stop' command should return almost instantaneously
+        delta_t=$(( $t1 - $t0 ))
+        [ $delta_t -le 2 ] ||\
+            die "podman stop: took too long ($delta_t seconds; expected <= 2)"
+
+        run_podman rm $cid
+    done
+}