docker_network: adding/updating tests (#47775)

* Add substring test (fixes #32927).

* Extend idempotency tests (fixes #32580).

test/integration/targets/docker_network/tasks/tests/basic.yml

@@ -31,6 +31,22 @@
     state: present
   register: networks_1
 
+- name: Connect network to containers 1
+  docker_network:
+    name: "{{ nname_1 }}"
+    state: present
+    connected:
+    - "{{ cname_1 }}"
+  register: networks_2
+
+- name: Connect network to containers 1 (idempotency)
+  docker_network:
+    name: "{{ nname_1 }}"
+    state: present
+    connected:
+    - "{{ cname_1 }}"
+  register: networks_2_idem
+
 - name: Connect network to containers 1 and 2
   docker_network:
     name: "{{ nname_1 }}"
@@ -38,7 +54,7 @@
     connected:
     - "{{ cname_1 }}"
     - "{{ cname_2 }}"
-  register: networks_2
+  register: networks_3
 
 - name: Connect network to containers 1 and 2 (idempotency)
   docker_network:
@@ -47,7 +63,7 @@
     connected:
     - "{{ cname_1 }}"
     - "{{ cname_2 }}"
-  register: networks_2_idem
+  register: networks_3_idem
 
 - name: Connect network to container 3
   docker_network:
@@ -56,7 +72,7 @@
     connected:
     - "{{ cname_3 }}"
     appends: yes
-  register: networks_3
+  register: networks_4
 
 - name: Connect network to container 3 (idempotency)
   docker_network:
@@ -65,7 +81,7 @@
     connected:
     - "{{ cname_3 }}"
     appends: yes
-  register: networks_3_idem
+  register: networks_4_idem
 
 - name: Disconnect network from container 1
   docker_network:
@@ -74,7 +90,7 @@
     connected:
     - "{{ cname_2 }}"
     - "{{ cname_3 }}"
-  register: networks_4
+  register: networks_5
 
 - name: Disconnect network from container 1 (idempotency)
   docker_network:
@@ -83,7 +99,7 @@
     connected:
     - "{{ cname_2 }}"
     - "{{ cname_3 }}"
-  register: networks_4_idem
+  register: networks_5_idem
 
 - name: Cleanup
   docker_network:
@@ -101,6 +117,8 @@
     # - networks_3_idem is not changed
     - networks_4 is changed
     # - networks_4_idem is not changed
+    - networks_5 is changed
+    # - networks_5_idem is not changed
 
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