Update e2e test guidelines

Signed-off-by: Daniel Weiße <[email protected]>

edgeless/tests/README.md

@@ -1,31 +1,38 @@
 # CSI driver e2e tests
 
-Run end to end tests using the kubernetes `e2e.test` binary.
+Run CSI e2e tests using [`sonobuoy`](https://github.com/vmware-tanzu/sonobuoy/releases/latest).
+
+## Generate test framework
+
+Generate CSI e2e test sonobuoy config:
 
-Download the binary for the your Kubernetes version:
 ```shell
-K8S_VER=1.23.0
-curl --location https://dl.k8s.io/v${K8S_VER}/kubernetes-test-linux-amd64.tar.gz | \
-  tar --strip-components=3 -zxf - kubernetes/test/bin/e2e.test
+KUBECONFIG=</path/to/kubeconfig`
+sonobuoy gen --e2e-focus='External.Storage' --e2e-skip='\[Disruptive\]' --kubeconfig=${KUBECONFIG} > sonobuoy.yaml
 ```
 
-For an overview on how to run tests read the [Kubernetes blog post](https://kubernetes.io/blog/2020/01/08/testing-of-csi-drivers/#end-to-end-testing).
+Apply driver patch:
+
+```shell
+patch sonobuoy.yaml < patch.diff
+```
 
 ## Running the test suite
 
-1. Set up the CSI driver
+Start the test:
 
-    ```shell
-    kubectl apply -k ./deploy/kubernetes/overlays/edgeless/v1.0.0
-    kubectl wait -n kube-system csi-gce-pd-controller --for condition=available
-    ```
+```shell
+kubectl apply -f sonobuoy.yaml
+```
 
-1. Run the tests
+Wait for tests to complete:
 
-    ```shell
-    ./e2e.test \
-        -ginkgo.v \
-        -ginkgo.focus='External.Storage' \
-        -ginkgo.skip='\[Disruptive\]' \
-        -storage.testdriver=driver.yaml
-    ```
+```shell
+sonobuoy wait
+```
+
+Analyze results:
+
+```shell
+sonobuoy results $(sonobuoy retrieve)
+```

edgeless/tests/patch.diff

@@ -0,0 +1,58 @@
+--- o.yaml	2023-04-13 12:13:33.181285060 +0200
++++ sonobuoy.yaml	2023-04-13 09:36:28.475532271 +0200
+@@ -64,6 +64,10 @@
+ data:
+   plugin-0.yaml: |-
+     podSpec:
++      volumes:
++      - name: csi-driver-config-volume
++        configMap:
++          name: csi-driver-test-config
+       containers: []
+       nodeSelector:
+         kubernetes.io/os: linux
+@@ -86,7 +90,7 @@
+       - /run_e2e.sh
+       env:
+       - name: E2E_EXTRA_ARGS
+-        value: --progress-report-url=http://localhost:8099/progress
++        value: --progress-report-url=http://localhost:8099/progress -storage.testdriver=/tmp/csi-cfg/driver.yaml
+       - name: E2E_FOCUS
+         value: External.Storage
+       - name: E2E_PARALLEL
+@@ -113,6 +117,8 @@
+       volumeMounts:
+       - mountPath: /tmp/sonobuoy/results
+         name: results
++      - mountPath: /tmp/csi-cfg
++        name: csi-driver-config-volume
+   plugin-1.yaml: |-
+     podSpec:
+       containers: []
+@@ -245,4 +251,28 @@
+     sonobuoy-component: aggregator
+   type: ClusterIP
+ ---
+-
++apiVersion: v1
++kind: ConfigMap
++metadata:
++  name: csi-driver-test-config
++  namespace: sonobuoy
++data: 
++  driver.yaml: |
++    StorageClass:
++      FromName: true
++    DriverInfo:
++      Name: gcp.csi.confidential.cloud
++      SupportedFsType:
++        ext4: {}
++        xfs: {}
++      Capabilities:
++        persistence: true
++        block: true
++        exec: true
++        nodeExpansion: true
++        controllerExpansion: true
++        onlineExpansion: true
++        topology: true