fix podman container exists and diff for storage containers

Current these commands only check if a container exists in libpod. With
this fix, the commands will also check if they are in containers/storage.

This allows users to look at differences within a buildah or CRI-O container.

Currently buildah diff does not exists, so this helps out in that situation
as well as in CRI-O since the cri does not implement a diff command.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/test/system/030-run.bats b/test/system/030-run.bats
index 28dc7c7a7..a82743c70 100644
--- a/test/system/030-run.bats
+++ b/test/system/030-run.bats
@@ -460,4 +460,21 @@ json-file | f
     is "$output" "$expect" "podman run with --tz=local, matches host"
 }
 
+@test "podman container exists" {
+    rand=$(random_string 30)
+    run_podman 1 container exists myctr
+
+    run_podman create --name myctr $IMAGE /bin/true
+    run_podman container exists myctr
+
+    # Create a container that podman does not know about
+    run buildah from $IMAGE
+    cid="$output"
+
+    # exists should succeed
+    run_podman container exists $cid
+
+    run buildah rm $cid
+}
+
 # vim: filetype=sh