Quick simple tests for podman

This is a placeholder only. The idea is that, once the ginkgo
tests are approved and merged and packaged, you add that
package to test_podman.yml:required_packages, then rewrite
the .sh script so it invokes those tests and writes PASS/FAIL
to test.log as appropriate.

Until then, this can serve as a rudimentary gate.

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

tests/test_podman.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+#
+# Simple podman tests
+#
+
+set -x
+
+exec >/tmp/test.debug.log 2>&1
+
+echo "************************************************************************"
+echo "* This log contains the debug output from test_podman.sh."
+echo "*"
+echo "* Short test PASS/FAIL summary is in test.log"
+echo "************************************************************************"
+
+rm -f /tmp/test.log
+touch /tmp/test.log
+
+counter_file=/tmp/test.counter.txt
+echo 0 >| $counter_file
+
+do_test() {
+    local cmd="$1"; shift
+    local expected_status="$1"; shift
+    local expected_stdout="$1"; shift
+
+    counter=$(expr $(< $counter_file) + 1)
+    echo $counter >| $counter_file
+
+    # Make debug log easier to read
+    echo
+    echo "--------------------------------------------------------------------"
+    echo "-- test $counter"
+    echo
+
+    stdout=$(eval podman $cmd)
+    status=$?
+    if [ $status -ne $expected_status ]; then
+        echo "FAIL $counter $cmd: status=$status (expected $expected_status)" >>/tmp/test.log
+        return
+    fi
+
+    if [ "$expected_stdout" = "-" ]; then
+        :
+    elif [ -z "$expected_stdout" ]; then
+        if [ -n "$stdout" ]; then
+            echo "FAIL $counter $cmd : stdout='$stdout' (expected '')" >>/tmp/test.log
+            return
+        fi
+    else
+        if ! expr "$stdout" : "$expected_stdout"; then
+            echo "FAIL $counter $cmd : stdout='$stdout' (expected '$expected_stdout')" >>/tmp/test.log
+            return
+        fi
+    fi
+
+    echo "PASS $counter $cmd" >>/tmp/test.log
+}
+
+# Clean slate
+do_test "rm -a -f"  0 "-"
+do_test "rmi -a -f" 0 "-"
+
+do_test "info --format '{{.host.rootless}}'"         0 "false"
+do_test "info --format '{{.store.GraphDriverName}}'" 0 "overlay"
+
+do_test "pull alpine" 0 "-"
+do_test "images --format {{.Repository}}:{{.Tag}}"  0 \
+        "docker.io/library/alpine:latest"
+
+do_test "run alpine sh -c 'echo hi'" 0 "hi"
+do_test "run alpine date"            0 "-"
+do_test "run alpine /bin/false"      1 ""
+
+do_test "ps -a | wc -l"                             0 "4"
+do_test "ps -a | grep false | grep -q 'Exited (1)'" 0 ""
+
+# Final exit status: nonzero if the word FAIL is present in results
+if grep -q FAIL /tmp/test.log; then
+    exit 1
+fi
+exit 0

tests/test_podman.yml

@@ -0,0 +1,27 @@
+---
+- hosts: localhost
+  vars:
+  - artifacts: ./artifacts
+  - required_packages:
+      - podman
+  tags:
+    - classic
+    - container
+
+  tasks:
+  - name: install packages
+    dnf: name="{{ required_packages }}" state=installed
+        enablerepo=updates-testing
+
+  - block:
+      - name: Run test
+        script: ./test_podman.sh
+    always:
+      - name: Pull out logs
+        fetch:
+          src: "/tmp/{{ item }}"
+          dest: "{{ artifacts }}/{{ item }}"
+          flat: yes
+        with_items:
+          - test.log
+          - test.debug.log

tests/tests.yml

@@ -0,0 +1 @@
+- import_playbook: test_podman.yml