Verify the configuration

kubectl apply -f- <<EOF
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: test-certificate
spec:
  secretName: test-certificate
  privateKey:
    rotationPolicy: Always
  dnsNames:
    - test.example.com
  commonName: test.example.com
  issuerRef:
    name: issuer-1
    kind: Issuer
EOF