Rework gcp_compute_instance integration tests

Also adding the test cases for new attachDisk feature

tests/integration/targets/gcp_compute_instance/tasks/attach-disks.yml

@@ -0,0 +1,104 @@
+---
+- block:
+    - name: Create instance
+      google.cloud.gcp_compute_instance:
+        name: "{{ resource_name }}-attach-vm"
+        machine_type: n1-standard-1
+        state: present
+        disks:
+          - auto_delete: true
+            boot: true
+            initialize_params:
+              source_image: "{{ gcp_disk_image }}"
+              disk_type: pd-standard
+        network_interfaces:
+          - network: "{{ _network }}"
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+      register: _result1
+
+    - name: Verify instance info post-create
+      google.cloud.gcp_compute_instance_info:
+        filters:
+          - name = {{ _result1.name }}
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+        scopes:
+          - https://www.googleapis.com/auth/compute
+      register: _info1
+
+    - name: Create extra disk
+      google.cloud.gcp_compute_disk:
+        name: "{{ resource_name }}-extra"
+        state: present
+        zone: "{{ gcp_zone }}"
+        size_gb: 20
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+      register: _disk
+
+    - name: Attach extra disk to instance
+      google.cloud.gcp_compute_instance:
+        name: "{{ resource_name }}-attach-vm"
+        machine_type: n1-standard-1
+        state: present
+        disks:
+          - auto_delete: true
+            boot: true
+            initialize_params:
+              source_image: "{{ gcp_disk_image }}"
+              disk_type: pd-standard
+          - source: "{{ _disk }}"
+        network_interfaces:
+          - network: "{{ _network }}"
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+      register: _result2
+
+    - name: Verify instance info post-change
+      google.cloud.gcp_compute_instance_info:
+        filters:
+          - name = {{ _result2.name }}
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+        scopes:
+          - https://www.googleapis.com/auth/compute
+      register: _info2
+
+    - name: Run assertions
+      ansible.builtin.assert:
+        that:
+          - _info1.resources | length > 0
+          - _info1.resources[0].disks | length == 1
+          - _info2.resources | length > 0
+          - _info2.resources[0].disks | length == 2
+
+  always:
+    # teardown
+    - name: Destroy instance
+      google.cloud.gcp_compute_instance:
+        name: "{{ resource_name }}-attach-vm"
+        state: absent
+        machine_type: n1-standard-1
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"
+
+    - name: Destroy extra disk
+      google.cloud.gcp_compute_disk:
+        name: "{{ resource_name }}-extra"
+        state: absent
+        zone: "{{ gcp_zone }}"
+        project: "{{ gcp_project }}"
+        auth_kind: "{{ gcp_cred_kind }}"
+        service_account_file: "{{ gcp_cred_file | default(omit) }}"

tests/integration/targets/gcp_compute_instance/tasks/gvnic.yml

@@ -9,8 +9,8 @@
       google.cloud.gcp_compute_disk:
         name: "{{ resource_prefix }}-{{ item.key }}"
         size_gb: 50
-        source_image: projects/rhel-cloud/global/images/rhel-9-v20250513
-        zone: us-central1-a
+        source_image: "{{ gcp_disk_image }}"
+        zone: "{{ gcp_zone }}"
         project: "{{ gcp_project }}"
         auth_kind: "{{ gcp_cred_kind }}"
         service_account_file: "{{ gcp_cred_file | default(omit) }}"
@@ -28,7 +28,7 @@
         network_interfaces:
           - network: "{{ _network }}"
             nic_type: "{{ item.value if item.value != 'default' else omit }}"
-        zone: us-central1-a
+        zone: "{{ gcp_zone }}"
         project: "{{ gcp_project }}"
         auth_kind: "{{ gcp_cred_kind }}"
         service_account_file: "{{ gcp_cred_file | default(omit) }}"
@@ -39,7 +39,7 @@
       google.cloud.gcp_compute_instance_info:
         filters:
           - name = {{ resource_name }}-{{ item.key }}
-        zone: us-central1-a
+        zone: "{{ gcp_zone }}"
         project: "{{ gcp_project }}"
         auth_kind: "{{ gcp_cred_kind }}"
         service_account_file: "{{ gcp_cred_file | default(omit) }}"
@@ -60,7 +60,7 @@
       google.cloud.gcp_compute_instance:
         name: "{{ resource_name }}-{{ item.key }}"
         machine_type: n1-standard-1
-        zone: us-central1-a
+        zone: "{{ gcp_zone }}"
         project: "{{ gcp_project }}"
         auth_kind: "{{ gcp_cred_kind }}"
         service_account_file: "{{ gcp_cred_file | default(omit) }}"
@@ -69,7 +69,7 @@
     - name: Delete disk
       google.cloud.gcp_compute_disk:
         name: "{{ resource_prefix }}-{{ item.key }}"
-        zone: us-central1-a
+        zone: "{{ gcp_zone }}"
         project: "{{ gcp_project }}"
         auth_kind: "{{ gcp_cred_kind }}"
         service_account_file: "{{ gcp_cred_file | default(omit) }}"

tests/integration/targets/gcp_compute_instance/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Generated tests
   ansible.builtin.include_tasks: autogen.yml
 
-- name: Test nic_type scenarios
+- name: Extra non-autogen tests
   block:
     - name: Create network
       google.cloud.gcp_compute_network:
@@ -14,15 +14,23 @@
         state: present
       register: _network
 
-    - name: Loop over testcase
+    - name: Test GVNIC test cases
       ansible.builtin.include_tasks: gvnic.yml
       loop: "{{ testcases | dict2items }}"
       vars:
+        gcp_disk_image: projects/centos-cloud/global/images/family/centos-stream-9
+        gcp_zone: us-central1-a
         testcases:
           gvnic: GVNIC
           virtio: VIRTIO_NET
           default: default
 
+    - name: Test attach disks
+      ansible.builtin.include_tasks: attach-disks.yml
+      vars:
+        gcp_disk_image: projects/centos-cloud/global/images/family/centos-stream-9
+        gcp_zone: us-central1-a
+
   always:
     - name: Delete network
       google.cloud.gcp_compute_network: