Add integration test to molecule

molecule/default/playbook.yml

@@ -25,3 +25,4 @@
     - include_tasks: tasks/apply.yml
     - include_tasks: tasks/waiter.yml
     - include_tasks: tasks/full.yml
+    - include_tasks: tasks/exec.yml

molecule/default/tasks/exec.yml

@@ -0,0 +1,50 @@
+---
+- vars:
+    ns: k8s-exec
+    pod: sleep-pod
+    pod_def:
+      apiVersion: v1
+      kind: Pod
+      metadata:
+        name: "{{ pod }}"
+        namespace: "{{ ns }}"
+      spec:
+        containers:
+          - name: sleeper
+            image: busybox
+            command: ["sleep", "infinity"]
+
+  block:
+    - name: Ensure that k8s-log namespace exists
+      k8s:
+        kind: Namespace
+        name: "{{ ns }}"
+
+    - name: Create a pod
+      k8s:
+        definition: "{{ pod_def }}"
+        wait: yes
+        wait_sleep: 1
+        wait_timeout: 30
+
+    - name: Execute a command
+      k8s_exec:
+        pod: "{{ pod }}"
+        namespace: "{{ ns }}"
+        command: cat /etc/resolv.conf
+      register: output
+
+    - name: Show k8s_exec output
+      debug:
+        var: output
+
+    - name: Assert k8s_exec output is correct
+      assert:
+        that:
+          - "'nameserver' in output.stdout"
+
+    - name: Cleanup namespace
+      k8s:
+        kind: Namespace
+        name: "{{ ns }}"
+        state: absent