cs_serviceoffer: remove unused code and improve test coverage (#33276)

lib/ansible/modules/cloud/cloudstack/cs_serviceoffer.py

@@ -374,10 +374,8 @@ class AnsibleCloudStackServiceOffering(AnsibleCloudStack):
             'systemvmtype': 'system_vm_type',
             'tags': 'storage_tags',
         }
-        self.service_offering = None
 
     def get_service_offering(self):
-        if not self.service_offering:
         args = {
             'name': self.module.params.get('name'),
             'domainid': self.get_domain(key='id'),
@@ -395,12 +393,6 @@ class AnsibleCloudStackServiceOffering(AnsibleCloudStack):
         else:
             service_offering = self._update_offering(service_offering)
 
-        if service_offering:
-            service_offering = self.ensure_tags(
-                resource=service_offering,
-                resource_type='ServiceOffering'
-            )
-
         return service_offering
 
     def absent_service_offering(self):
@@ -422,7 +414,7 @@ class AnsibleCloudStackServiceOffering(AnsibleCloudStack):
 
         required_params = []
         if is_system and not system_vm_type:
-            required_params.add('system_vm_type')
+            required_params.append('system_vm_type')
         self.module.fail_on_missing_params(required_params=required_params)
 
         args = {

test/integration/targets/cs_serviceoffer/tasks/system_vm_service_offering.yml

@@ -10,6 +10,26 @@
     that:
     - so|success
 
+- name: fail missing storage type and is_system
+  cs_serviceoffer:
+    name: System Offering for Ansible
+    cpu_number: 1
+    cpu_speed: 500
+    memory: 512
+    host_tag: perf
+    storage_tag: perf
+    storage_type: shared
+    offer_ha: true
+    limit_cpu_usage: false
+    is_system: true
+  register: so
+  ignore_errors: true
+- name: verify create system service offering in check mode
+  assert:
+    that:
+    - so|failed
+    - so.msg.startswith('missing required arguments:')
+
 - name: create system service offering in check mode
   cs_serviceoffer:
     name: System Offering for Ansible