yaml based assertion about d-operators HOT 1 OPEN

UseCase 1: To further our expectation of declarative assertion, let us try to assert any Deployment that has one of its containers with a nginx image with name my-nginx.
Solution: The assertion yaml should look like below:

apiVersion: apps/v1
kind: Deployment
spec:
  template:
    spec:
      containers:
      - name: my-nginx
        image: nginx

UseCase 2: Assert any Deployment that has nginx image with container port 80
Solution: The assertion yaml should look like following:

apiVersion: apps/v1
kind: Deployment
spec:
  template:
    spec:
      containers:
      - image: nginx
        ports:
        - containerPort: 80

UseCase 3: Assert 3 Pods with label app:run in Running state
Solution: The assertion yaml should look like following:

kind: PodList
count: 3
items:
- kind: Pod
  metadata:
    labels:
      app: run
  status:
    phase: Running

UseCase 4: Assert 2 Pods with label app:run & app:running in Running state
Solution: The assertion yaml should look like following:

kind: PodList
items:
- kind: Pod
  metadata:
    labels:
      app: run
  status:
    phase: Running
- kind: Pod
  metadata:
    labels:
      app: running
  status:
    phase: Running

from d-operators.