Add tests for inventory plugin (#16)

molecule/default/verify.yml

@@ -1,4 +1,40 @@
 ---
+- name: Verify inventory and connection plugins
+  # This group is created by the openshift_inventory plugin
+  # It is automatically configured to use the `oc` connection plugin
+  hosts: namespace_testing_pods
+  gather_facts: no
+  vars:
+    file_content: |
+      Hello world
+  tasks:
+    - name: End play if host not running (TODO should we not add these to the inventory?)
+      meta: end_host
+      when: pod_phase != "Running"
+
+    - setup:
+
+    - debug: var=ansible_facts
+
+    - name: Assert the TEST environment variable was retrieved
+      assert:
+        that: ansible_facts.env.TEST == 'test'
+
+    - name: Copy a file into the host
+      copy:
+        content: '{{ file_content }}'
+        dest: /tmp/test_file
+
+    - name: Retrieve the file from the host
+      slurp:
+        src: /tmp/test_file
+      register: slurped_file
+
+    - name: Assert the file content matches expectations
+      assert:
+        that: (slurped_file.content|b64decode) == file_content
+
+
 - name: Verify
   hosts: localhost
   connection: local