add pvc e2e test

test/config/pvc/pvc.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: knative-pv-claim
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi

test/e2e-common.sh

@@ -55,6 +55,8 @@ export SYSTEM_NAMESPACE="${SYSTEM_NAMESPACE:-$(uuidgen | tr 'A-Z' 'a-z')}"
 readonly REPLICAS=3
 readonly BUCKETS=10
 
+export USE_DEFAULT_STORAGE=${USE_DEFAULT_STORAGE:-1}
+
 # Receives the latest serving version and searches for the same version with major and minor and searches for the latest patch
 function latest_net_istio_version() {
   local serving_version=$1

test/e2e-tests.sh

@@ -121,6 +121,21 @@ go_test_e2e -timeout=2m ./test/e2e/initcontainers ${TEST_OPTIONS} || failed=1
 toggle_feature kubernetes.podspec-init-containers Disabled
 toggle_feature kubernetes.podspec-volumes-emptydir Disabled
 
+# RUN PVC tests with default storage class if available.
+if (( USE_DEFAULT_STORAGE )) ; then
+  kubectl apply -f "${E2E_YAML_DIR}/test/config/pvc/pvc.yaml"
+fi
+
+toggle_feature kubernetes.podspec-persistent-volume-claim Enabled
+toggle_feature kubernetes.podspec-persistent-volume-write Enabled
+go_test_e2e -timeout=5m ./test/e2e/pvc ${TEST_OPTIONS} || failed=1
+toggle_feature kubernetes.podspec-persistent-volume-write Disabled
+toggle_feature kubernetes.podspec-persistent-volume-claim Disabled
+
+if (( USE_DEFAULT_STORAGE )) ; then
+  kubectl delete -f "${E2E_YAML_DIR}/test/config/pvc/pvc.yaml"
+fi
+
 # Run HA tests separately as they're stopping core Knative Serving pods.
 # Define short -spoofinterval to ensure frequent probing while stopping pods.
 toggle_feature autocreateClusterDomainClaims true config-network || fail_test

test/e2e/pvc/pvc_test.go

@@ -0,0 +1,73 @@
+//go:build e2e
+// +build e2e
+
+/*
+Copyright 2022 The Knative Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package pvc
+
+import (
+	"context"
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	pkgTest "knative.dev/pkg/test"
+	"knative.dev/pkg/test/spoof"
+	. "knative.dev/serving/pkg/testing/v1"
+	"knative.dev/serving/test"
+	v1test "knative.dev/serving/test/v1"
+)
+
+// TestPersistentVolumeClaims tests init containers support.
+func TestPersistentVolumeClaims(t *testing.T) {
+	t.Parallel()
+	clients := test.Setup(t)
+
+	names := test.ResourceNames{
+		Service: test.ObjectNameForTest(t),
+		Image:   test.EmptyDir,
+	}
+
+	test.EnsureTearDown(t, clients, &names)
+
+	t.Log("Creating a new Service")
+
+	withVolume := WithVolume("data", "/data", corev1.VolumeSource{
+		PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{
+			ClaimName: "knative-pv-claim",
+			ReadOnly: false,
+		},
+	})
+
+	resources, err := v1test.CreateServiceReady(t, clients, &names, withVolume)
+	if err != nil {
+		t.Fatalf("Failed to create initial Service: %v: %v", names.Service, err)
+	}
+
+	url := resources.Route.Status.URL.URL()
+	if _, err := pkgTest.CheckEndpointState(
+		context.Background(),
+		clients.KubeClient,
+		t.Logf,
+		url,
+		spoof.MatchesAllOf(spoof.IsStatusOK, spoof.MatchesBody(test.EmptyDirText)),
+		"PVCText",
+		test.ServingFlags.ResolvableDomain,
+		test.AddRootCAtoTransport(context.Background(), t.Logf, clients, test.ServingFlags.HTTPS),
+	); err != nil {
+		t.Fatalf("The endpoint %s for Route %s didn't serve the expected text %q: %v", url, names.Route, test.EmptyDirText, err)
+	}
+}

test/test_images/pvc/service.yaml

@@ -0,0 +1,36 @@
+# Copyright 2022 The Knative Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: serving.knative.dev/v1
+kind: Service
+metadata:
+  name: event-display
+spec:
+  template:
+    spec:
+      containers:
+        - image: ko://knative.dev/serving/test/test_images/emptydir
+          name: event-display
+          volumeMounts:
+            - mountPath: /data
+              name: mydata
+              readOnly: false
+          env:
+            - name: DATA_PATH
+              value: /data
+      volumes:
+        - name: mydata
+          persistentVolumeClaim:
+            claimName: knative-pv-claim
+            readOnly: false