system tests: podman-remote, image tree

- new sanity checks for podman-remote:
  - first, confirm that when PODMAN is "-remote",
    we actually talk to a server (validated by
    presence of "Server:" string in "podman version").
  - second, add test for #7212, in which we run
    "podman --remote" (podman with --remote flag,
    not podman-remote command) and make sure --remote
    is allowed both as the first option and also
    with other flag options preceding.

- new test for "podman image tree" (piggybacking on
  top of a "podman build" test, because that gives
  us lots of layers).

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

test/system/001-basic.bats

@@ -31,6 +31,37 @@ function setup() {
     run_podman pull $IMAGE
 }
 
+# PR #7212: allow --remote anywhere before subcommand, not just as 1st flag
+@test "podman-remote : really is remote, works as --remote option" {
+    if ! is_remote; then
+        skip "only applicable on podman-remote"
+    fi
+
+    # First things first: make sure our podman-remote actually is remote!
+    run_podman version
+    is "$output" ".*Server:" "the given podman path really contacts a server"
+
+    # $PODMAN may be a space-separated string, e.g. if we include a --url.
+    # Split it into its components; remove "-remote" from the command path;
+    # and preserve any other args if present.
+    local -a podman_as_array=($PODMAN)
+    local    podman_path=${podman_as_array[0]}
+    local    podman_non_remote=${podman_path%%-remote}
+    local -a podman_args=("${podman_as_array[@]:1}")
+
+    # This always worked: running "podman --remote ..."
+    PODMAN="${podman_non_remote} --remote ${podman_args[@]}" run_podman version
+    is "$output" ".*Server:" "podman --remote: contacts server"
+
+    # This was failing: "podman --foo --bar --remote".
+    PODMAN="${podman_non_remote} --tmpdir /var/tmp --log-level=error ${podman_args[@]} --remote" run_podman version
+    is "$output" ".*Server:" "podman [flags] --remote: contacts server"
+
+    # ...but no matter what, --remote is never allowed after subcommand
+    PODMAN="${podman_non_remote} ${podman_args[@]}" run_podman 125 version --remote
+    is "$output" "Error: unknown flag: --remote" "podman version --remote"
+}
+
 # This is for development only; it's intended to make sure our timeout
 # in run_podman continues to work. This test should never run in production
 # because it will, by definition, fail.

test/system/070-build.bats

@@ -165,6 +165,7 @@ EOF
     # cd to the dir, so we test relative paths (important for podman-remote)
     cd $PODMAN_TMPDIR
     run_podman build -t build_test -f build-test/Containerfile build-test
+    local iid="${lines[-1]}"
 
     # Run without args - should run the above script. Verify its output.
     export MYENV2="$s_env2"
@@ -232,6 +233,22 @@ Labels.$label_name | $label_value
     run_podman run --rm build_test stat -c'%u:%g:%N' /a/b/c/myfile
     is "$output" "4:5:/a/b/c/myfile" "file in volume is chowned"
 
+    # Hey, as long as we have an image with lots of layers, let's
+    # confirm that 'image tree' works as expected
+    run_podman image tree build_test
+    is "${lines[0]}" "Image ID: ${iid:0:12}" \
+       "image tree: first line"
+    is "${lines[1]}" "Tags:     \[localhost/build_test:latest]" \
+       "image tree: second line"
+    is "${lines[2]}" "Size:     [0-9.]\+[kM]B" \
+       "image tree: third line"
+    is "${lines[3]}" "Image Layers" \
+       "image tree: fourth line"
+    is "${lines[4]}"  "...  ID: [0-9a-f]\{12\} Size: .* Top Layer of: \[$IMAGE]" \
+       "image tree: first layer line"
+    is "${lines[-1]}" "...  ID: [0-9a-f]\{12\} Size: .* Top Layer of: \[localhost/build_test:latest]" \
+       "image tree: last layer line"
+
     # Clean up
     run_podman rmi -f build_test
 }