rabbitmq_plugin: add integration tests (#40389)

* rabbitmq_plugin: add integration tests

* Use import_tasks instead of include

test/integration/targets/rabbitmq_plugin/aliases

@@ -0,0 +1,5 @@
+destructive
+posix/ci/group1
+skip/osx
+skip/freebsd
+skip/rhel

test/integration/targets/rabbitmq_plugin/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+  - setup_rabbitmq

test/integration/targets/rabbitmq_plugin/tasks/main.yml

@@ -0,0 +1,2 @@
+- import_tasks: tests.yml
+  when: ansible_distribution == 'Ubuntu'

test/integration/targets/rabbitmq_plugin/tasks/tests.yml

@@ -0,0 +1,69 @@
+- block:
+  - set_fact:
+      plugin_name: rabbitmq_top
+
+  - name: Enable plugin
+    rabbitmq_plugin:
+      name: "{{ plugin_name }}"
+      state: enabled
+    register: result
+
+  - name: Get rabbitmq-plugins output
+    shell: "rabbitmq-plugins list | grep {{ plugin_name }}"
+    register: cli_result
+
+  - name: Check that the plugin is enabled
+    assert:
+      that:
+        - result is changed
+        - result is success
+        - '"{{ plugin_name }}" in result.enabled'
+        - result.disabled== []
+        - '"[E" in cli_result.stdout'
+
+  - name: Enable plugin (idempotency)
+    rabbitmq_plugin:
+      name: "{{ plugin_name }}"
+      state: enabled
+    register: result
+
+  - name: Check idempotency
+    assert:
+      that:
+        - result is not changed
+
+  - name: Disable plugin
+    rabbitmq_plugin:
+      name: "{{ plugin_name }}"
+      state: disabled
+    register: result
+
+  - name: Get rabbitmq-plugins output
+    shell: "rabbitmq-plugins list | grep {{ plugin_name }}"
+    register: cli_result
+
+  - name: Check that the plugin is disabled
+    assert:
+      that:
+        - result is changed
+        - result is success
+        - result.enabled == []
+        - '"{{ plugin_name }}" in result.disabled'
+        - '"[E" not in cli_result.stdout'
+
+  - name: Disable plugin (idempotency)
+    rabbitmq_plugin:
+      name: "{{ plugin_name }}"
+      state: disabled
+    register: result
+
+  - name: Check idempotency
+    assert:
+      that:
+        - result is not changed
+
+  always:
+    - name: Disable plugin
+      rabbitmq_plugin:
+        name: "{{ plugin_name }}"
+        state: disabled