Add system test for shell completion

There exists a unit test to ensure that shell completion functions are
defined. However there was no check about the quality of the provided
shell completions. Lets change that.

The idea is to create a general test that makes sure we are suggesting
containers,pods,images... for the correct commands. This works by
reading the command use line and checking for each arg if we provide
the correct suggestions for this arg.

It includes the following tests:
- flag suggestions if [options] is set
- container, pod, image, network, volume, registry completion
- path completion for the appropriate arg KEYWORDS (`PATH`,`CONTEXT`,etc.)
- no completion if there are no args
- completion for more than one arg if it ends with `...]`

The test does not cover completion values for flags and not every arg KEYWORD
is supported. This is still a huge improvement and covers most use cases.

This test spotted several inconsistencies between the completion and the
command use line. All of them have been adjusted to make the test pass.

The biggest advantage is that the completions always match the latest
command changes. So if someone changes the arguments for a command this
ensures that the completions must be adjusted.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

1 files changed, 1 insertions, 12 deletions

diff --git a/test/system/015-help.bats b/test/system/015-help.bats
index 22db8be8a..5f38c34a1 100644
--- a/test/system/015-help.bats
+++ b/test/system/015-help.bats
@@ -12,22 +12,11 @@
 #
 load helpers
 
-# run 'podman help', parse the output looking for 'Available Commands';
-# return that list.
-function podman_commands() {
-    dprint "$@"
-    run_podman help "$@" |\
-        awk '/^Available Commands:/{ok=1;next}/^Options:/{ok=0}ok { print $1 }' |\
-        grep .
-    "$output"
-}
-
-
 function check_help() {
     local count=0
     local -A found
 
-    for cmd in $(podman_commands "$@"); do
+    for cmd in $(_podman_commands "$@"); do
         # Human-readable podman command string, with multiple spaces collapsed
         command_string="podman $* $cmd"
         command_string=${command_string//  / }  # 'podman  x' -> 'podman x'