add test for ad hoc no module arg

awx_collection/tests/integration/targets/tower_ad_hoc_command/tasks/main.yml

@@ -48,6 +48,19 @@
       - "result is changed"
       - "result.status == 'successful'"
 
+- name: Launch an Ad Hoc Command without module argument
+  tower_ad_hoc_command:
+    inventory: "Demo Inventory"
+    credential: "{{ ssh_cred_name }}"
+    module_name: "ping"
+    wait: true
+  register: result
+
+- assert:
+    that:
+      - "result is changed"
+      - "result.status == 'successful'"
+
 - name: Check module fails with correct msg
   tower_ad_hoc_command:
     inventory: "{{ inv_name }}"