[backport/2.2] Move integration test suite from molecule to ansible-test (#392) (#457)

[backport/2.2] Move integration test suite from molecule to ansible-test (#392)

Move integration test suite from molecule to ansible-test
SUMMARY
molecule has been replaced with ansible-test
some test cases have been updated
k8s_apply : remove duplicated tasks increasing the running time of the test
helm: use different namespaces for different test cases in order to wait for the namespace deletion before moving to the next test.
all: remove wait: yes at the end of each test when deleting namespace, the role used to create namespace will ensure that it is deleted before if existing.
ISSUE TYPE
Feature Pull Request
COMPONENT NAME
integration testing
Reviewed-by: Mike Graves mgraves@redhat.com
Reviewed-by: Gonéri Le Bouder goneri@lebouder.net
Reviewed-by: None 
(cherry picked from commit fd61f8b)
SUMMARY


ISSUE TYPE


Bugfix Pull Request
Docs Pull Request
Feature Pull Request
New Module Pull Request

COMPONENT NAME

ADDITIONAL INFORMATION

tests/integration/targets/k8s_scale/aliases

@@ -0,0 +1,4 @@
+k8s_scale
+k8s
+k8s_info
+time=210

tests/integration/targets/k8s_scale/defaults/main.yml

@@ -0,0 +1,42 @@
+---
+k8s_pod_metadata:
+  labels:
+    app: "{{ k8s_pod_name }}"
+
+k8s_pod_spec:
+  serviceAccount: "{{ k8s_pod_service_account }}"
+  containers:
+    - image: "{{ k8s_pod_image }}"
+      imagePullPolicy: Always
+      name: "{{ k8s_pod_name }}"
+      command: "{{ k8s_pod_command }}"
+      readinessProbe:
+        initialDelaySeconds: 15
+        exec:
+          command:
+            - /bin/true
+      resources: "{{ k8s_pod_resources }}"
+      ports: "{{ k8s_pod_ports }}"
+      env: "{{ k8s_pod_env }}"
+
+
+k8s_pod_service_account: default
+
+k8s_pod_resources:
+  limits:
+    cpu: "100m"
+    memory: "100Mi"
+
+k8s_pod_command: []
+
+k8s_pod_ports: []
+
+k8s_pod_env: []
+
+k8s_pod_template:
+  metadata: "{{ k8s_pod_metadata }}"
+  spec: "{{ k8s_pod_spec }}"
+
+test_namespace: "scale"
+
+k8s_wait_timeout: 400

tests/integration/targets/k8s_scale/files/deployment.yaml

@@ -0,0 +1,50 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test0
+  labels:
+    app: nginx
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.14.2
+        ports:
+        - containerPort: 80
+      - name: hello
+        image: busybox
+        command: ['sh', '-c', 'echo "Hello, from test0" && sleep 3600']
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test1
+  labels:
+    app: nginx
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.14.2
+        ports:
+        - containerPort: 80
+      - name: hello
+        image: busybox
+        command: ['sh', '-c', 'echo "Hello, from test1" && sleep 3600']

tests/integration/targets/k8s_scale/meta/main.yml

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

tests/integration/targets/k8s_scale/tasks/main.yml

@@ -0,0 +1,272 @@
+---
+- block:
+    - set_fact:
+        scale_namespace: "{{ test_namespace }}"
+
+    - name: Add a deployment
+      k8s:
+        definition:
+          apiVersion: apps/v1
+          kind: Deployment
+          metadata:
+            name: scale-deploy
+            namespace: "{{ scale_namespace }}"
+          spec:
+            replicas: 1
+            selector:
+              matchLabels:
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
+        wait: yes
+        wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
+        apply: yes
+      vars:
+        k8s_pod_name: scale-deploy
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:v0.10.0-green
+        k8s_pod_ports:
+          - containerPort: 8080
+            name: http
+            protocol: TCP
+
+    - name: Get pods in scale-deploy
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        namespace: "{{ scale_namespace }}"
+        field_selectors:
+          - status.phase=Running
+
+    - name: Scale the deployment
+      k8s_scale:
+        api_version: apps/v1
+        kind: Deployment
+        name: scale-deploy
+        namespace: "{{ scale_namespace }}"
+        replicas: 0
+        wait: yes
+        wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
+      register: scale_down
+      diff: true
+
+    - name: Get pods in scale-deploy
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        namespace: "{{ scale_namespace }}"
+        field_selectors:
+          - status.phase=Running
+      register: scale_down_deploy_pods
+      until: scale_down_deploy_pods.resources | length == 0
+      retries: 6
+      delay: 5
+
+    - name: Ensure that scale down took effect
+      assert:
+        that:
+          - scale_down is changed
+          - '"duration" in scale_down'
+          - scale_down.diff
+
+    - name: Reapply the earlier deployment
+      k8s:
+        definition:
+          api_version: apps/v1
+          kind: Deployment
+          metadata:
+            name: scale-deploy
+            namespace: "{{ scale_namespace }}"
+          spec:
+            replicas: 1
+            selector:
+              matchLabels:
+                app: "{{ k8s_pod_name }}"
+            template: "{{ k8s_pod_template }}"
+        wait: yes
+        wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
+        apply: yes
+      vars:
+        k8s_pod_name: scale-deploy
+        k8s_pod_image: gcr.io/kuar-demo/kuard-amd64:v0.10.0-green
+        k8s_pod_ports:
+          - containerPort: 8080
+            name: http
+            protocol: TCP
+      register: reapply_after_scale
+
+    - name: Get pods in scale-deploy
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        namespace: "{{ scale_namespace }}"
+        field_selectors:
+          - status.phase=Running
+      register: scale_up_deploy_pods
+
+    - name: Ensure that reapply after scale worked
+      assert:
+        that:
+          - reapply_after_scale is changed
+          - scale_up_deploy_pods.resources | length == 1
+
+    - name: Scale the deployment up
+      k8s_scale:
+        api_version: apps/v1
+        kind: Deployment
+        name: scale-deploy
+        namespace: "{{ scale_namespace }}"
+        replicas: 2
+        wait: yes
+        wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
+      register: scale_up
+      diff: no
+
+    - name: Get pods in scale-deploy
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        field_selectors:
+          - status.phase=Running
+        namespace: "{{ scale_namespace }}"
+      register: scale_up_further_deploy_pods
+
+    - name: Ensure that scale up worked
+      assert:
+        that:
+          - scale_up is changed
+          - '"duration" in scale_up'
+          - scale_up.diff is not defined
+          - scale_up_further_deploy_pods.resources | length == 2
+
+    - name: Don't scale the deployment up
+      k8s_scale:
+        api_version: apps/v1
+        kind: Deployment
+        name: scale-deploy
+        namespace: "{{ scale_namespace }}"
+        replicas: 2
+        wait: yes
+      register: scale_up_noop
+      diff: no
+
+    - name: Get pods in scale-deploy
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        field_selectors:
+          - status.phase=Running
+        namespace: "{{ scale_namespace }}"
+      register: scale_up_noop_pods
+
+    - name: Ensure that no-op scale up worked
+      assert:
+        that:
+          - scale_up_noop is not changed
+          - scale_up_noop.diff is not defined
+          - scale_up_noop_pods.resources | length == 2
+          - '"duration" in scale_up_noop'
+
+    - name: Scale deployment down without wait
+      k8s_scale:
+        api_version: apps/v1
+        kind: Deployment
+        name: scale-deploy
+        namespace: "{{ scale_namespace }}"
+        replicas: 1
+        wait: no
+      register: scale_down_no_wait
+      diff: true
+
+    - name: Ensure that scale down succeeds
+      k8s_info:
+        kind: Pod
+        label_selectors:
+          - app=scale-deploy
+        namespace: "{{ scale_namespace }}"
+      register: scale_down_no_wait_pods
+      retries: 6
+      delay: 5
+      until: scale_down_no_wait_pods.resources | length == 1
+
+    - name: Ensure that scale down without wait worked
+      assert:
+        that:
+          - scale_down_no_wait is changed
+          - scale_down_no_wait.diff
+          - scale_down_no_wait_pods.resources | length == 1
+
+    # scale multiple resource using label selectors
+    - name: create deployment
+      kubernetes.core.k8s:
+        namespace: "{{ scale_namespace }}"
+        src: files/deployment.yaml
+
+    - name: list deployment
+      kubernetes.core.k8s_info:
+        kind: Deployment
+        namespace: "{{ scale_namespace }}"
+        label_selectors:
+          - app=nginx
+      register: resource
+    - assert:
+        that:
+          - resource.resources | list | length == 2
+
+    - name: scale deployment using resource version
+      kubernetes.core.k8s_scale:
+        replicas: 2
+        kind: Deployment
+        namespace: "{{ scale_namespace }}"
+        resource_version: 0
+        label_selectors:
+          - app=nginx
+      register: scale_out
+
+    - assert:
+        that:
+          - not scale_out.changed
+          - scale_out.results | selectattr('warning', 'defined') | list | length == 2
+
+    - name: scale deployment using current replicas (wrong value)
+      kubernetes.core.k8s_scale:
+        replicas: 2
+        current_replicas: 4
+        kind: Deployment
+        namespace: "{{ scale_namespace }}"
+        label_selectors:
+          - app=nginx
+      register: scale_out
+
+    - assert:
+        that:
+          - not scale_out.changed
+          - scale_out.results | selectattr('warning', 'defined') | list | length == 2
+
+    - name: scale deployment using current replicas (right value)
+      kubernetes.core.k8s_scale:
+        replicas: 2
+        current_replicas: 3
+        kind: Deployment
+        namespace: "{{ scale_namespace }}"
+        label_selectors:
+          - app=nginx
+        wait: yes
+        wait_timeout: "{{ k8s_wait_timeout | default(omit) }}"
+      register: scale_out
+
+    - assert:
+        that:
+          - scale_out.changed
+          - scale_out.results | map(attribute='result.status.replicas') | list | unique == [2]
+
+  always:
+    - name: Remove namespace
+      k8s:
+        kind: Namespace
+        name: "{{ scale_namespace }}"
+        state: absent
+      ignore_errors: true