kubernetes.core/molecule/default/tasks/apply.yml

---
- block:
    - set_fact:
        apply_namespace: apply

    - name: Ensure namespace exists
      k8s:
        definition:
          apiVersion: v1
          kind: Namespace
          metadata:
            name: "{{ apply_namespace }}"

    - name: Add a configmap
      k8s:
        name: "apply-configmap"
        namespace: "{{ apply_namespace }}"
        definition:
          kind: ConfigMap
          apiVersion: v1
          data:
            one: "1"
            two: "2"
            three: "3"
        apply: yes
      register: k8s_configmap

    - name: Check configmap was created
      assert:
        that:
          - k8s_configmap is changed
          - k8s_configmap.result.metadata.annotations|default(False)

    - name: Add same configmap again
      k8s:
        definition:
          kind: ConfigMap
          apiVersion: v1
          metadata:
            name: "apply-configmap"
            namespace: "{{ apply_namespace }}"
          data:
            one: "1"
            two: "2"
            three: "3"
        apply: yes
      register: k8s_configmap_2

    - name: Check nothing changed
      assert:
        that:
          - k8s_configmap_2 is not changed

    - name: Add same configmap again with check mode on
      k8s:
        definition:
          kind: ConfigMap
          apiVersion: v1
          metadata:
            name: "apply-configmap"
            namespace: "{{ apply_namespace }}"
          data:
            one: "1"
            two: "2"
            three: "3"
        apply: yes
      check_mode: yes
      register: k8s_configmap_check

    - name: Check nothing changed
      assert:
        that:
          - k8s_configmap_check is not changed

    - name: Add same configmap again but using name and namespace args
      k8s:
        name: "apply-configmap"
        namespace: "{{ apply_namespace }}"
        definition:
          kind: ConfigMap
          apiVersion: v1
          data:
            one: "1"
            two: "2"
            three: "3"
        apply: yes
      register: k8s_configmap_2a

    - name: Check nothing changed
      assert:
        that:
          - k8s_configmap_2a is not changed

    - name: Update configmap
      k8s:
        definition:
          kind: ConfigMap
          apiVersion: v1
          metadata:
            name: "apply-configmap"
            namespace: "{{ apply_namespace }}"
          data:
            one: "1"
            three: "3"
            four: "4"
        apply: yes
      register: k8s_configmap_3

    - name: Ensure that configmap has been correctly updated
      assert:
        that:
          - k8s_configmap_3 is changed
          - "'four' in k8s_configmap_3.result.data"
          - "'two' not in k8s_configmap_3.result.data"

    - name: Add a service
      k8s:
        definition:
          apiVersion: v1
          kind: Service
          metadata:
            name: apply-svc
            namespace: "{{ apply_namespace }}"
          spec:
            selector:
              app: whatever
            ports:
              - name: http
                port: 8080
                targetPort: 8080
        apply: yes
      register: k8s_service

    - name: Add exactly same service
      k8s:
        definition:
          apiVersion: v1
          kind: Service
          metadata:
            name: apply-svc
            namespace: "{{ apply_namespace }}"
          spec:
            selector:
              app: whatever
            ports:
              - name: http
                port: 8080
                targetPort: 8080
        apply: yes
      register: k8s_service_2

    - name: Check nothing changed
      assert:
        that:
          - k8s_service_2 is not changed

    - name: Change service ports
      k8s:
        definition:
          apiVersion: v1
          kind: Service
          metadata:
            name: apply-svc
            namespace: "{{ apply_namespace }}"
          spec:
            selector:
              app: whatever
            ports:
              - name: http
                port: 8081
                targetPort: 8081
        apply: yes
      register: k8s_service_3

    - name: Check ports are correct
      assert:
        that:
          - k8s_service_3 is changed
          - k8s_service_3.result.spec.ports | length == 1
          - k8s_service_3.result.spec.ports[0].port == 8081

  always:
    - name: Remove namespace
      k8s:
        kind: Namespace
        name: "{{ apply_namespace }}"
        state: absent