Add test cases for init-persistent-home container automounts

Signed-off-by: David Kwon <dakwon@redhat.com>

pkg/library/lifecycle/prestart_test.go

@@ -56,6 +56,9 @@ func TestGetInitContainers(t *testing.T) {
 		loadPreStartTestCaseOrPanic(t, "prestart_exec_command.yaml"),
 		loadPreStartTestCaseOrPanic(t, "prestart_apply_command.yaml"),
 		loadPreStartTestCaseOrPanic(t, "init_and_main_container.yaml"),
+		loadPreStartTestCaseOrPanic(t, "persistent_home_initcontainer_first_initcontainer.yaml"),
+		loadPreStartTestCaseOrPanic(t, "persistent_home_initcontainer_second_initcontainer.yaml"),
+		loadPreStartTestCaseOrPanic(t, "persistent_home_initcontainer_only_initcontainer.yaml"),
 	}
 
 	for _, tt := range tests {

pkg/library/lifecycle/testdata/prestart/persistent_home_initcontainer_first_initcontainer.yaml

@@ -0,0 +1,45 @@
+name: "Should set the init-persistent-home init container when init-persistent-home is the first preStart event"
+
+input:
+  components:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+    - name: init-persistent-home
+      container:
+        image: my-image
+  commands:
+    - id: test_preStart_command
+      apply:
+        component: test-container1
+    - id: test_regular_command
+      exec:
+        component: test-container1
+        command: "test_command"
+    - id: init-persistent-home
+      apply:
+        component: init-persistent-home
+  events:
+    preStart:
+      - "init-persistent-home"
+      - "test_preStart_command"
+
+output:
+  initContainers:
+    - name: init-persistent-home
+      container:
+        image: my-image
+    - name: test-container1
+      container:
+        image: my-image
+  mainContainers:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+  errRegexp:

pkg/library/lifecycle/testdata/prestart/persistent_home_initcontainer_only_initcontainer.yaml

@@ -0,0 +1,38 @@
+name: "Should set the init-persistent-home init container when it is the only init container"
+
+input:
+  components:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+    - name: init-persistent-home
+      container:
+        image: my-image
+  commands:
+    - id: test_regular_command
+      exec:
+        component: test-container1
+        command: "test_command"
+    - id: init-persistent-home
+      apply:
+        component: init-persistent-home
+  events:
+    preStart:
+      - "init-persistent-home"
+
+output:
+  initContainers:
+    - name: init-persistent-home
+      container:
+        image: my-image
+  mainContainers:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+  errRegexp:

pkg/library/lifecycle/testdata/prestart/persistent_home_initcontainer_second_initcontainer.yaml

@@ -0,0 +1,45 @@
+name: "Should set the init-persistent-home init container when init-persistent-home is the second preStart event"
+
+input:
+  components:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+    - name: init-persistent-home
+      container:
+        image: my-image
+  commands:
+    - id: test_preStart_command
+      apply:
+        component: test-container1
+    - id: test_regular_command
+      exec:
+        component: test-container1
+        command: "test_command"
+    - id: init-persistent-home
+      apply:
+        component: init-persistent-home
+  events:
+    preStart:
+      - "test_preStart_command"
+      - "init-persistent-home"
+
+output:
+  initContainers:
+    - name: init-persistent-home
+      container:
+        image: my-image
+    - name: test-container1
+      container:
+        image: my-image
+  mainContainers:
+    - name: test-container1
+      container:
+        image: my-image
+    - name: test-container2
+      container:
+        image: my-image
+  errRegexp:

pkg/provision/automount/common_persistenthome_test.go

@@ -0,0 +1,93 @@
+//
+// Copyright (c) 2019-2024 Red Hat, Inc.
+// 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 automount
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/stretchr/testify/assert"
+	corev1 "k8s.io/api/core/v1"
+	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+
+	"github.com/devfile/devworkspace-operator/apis/controller/v1alpha1"
+	"github.com/devfile/devworkspace-operator/pkg/provision/sync"
+)
+
+func TestProvisionAutomountResourcesIntoPersistentHomeEnabled(t *testing.T) {
+	tests := []testCase{
+		loadTestCaseOrPanic(t, "testdata/testProvisionsConfigmaps.yaml"),
+		loadTestCaseOrPanic(t, "testdata/testProvisionsProjectedVolumes.yaml"),
+		loadTestCaseOrPanic(t, "testdata/testProvisionsSecrets.yaml"),
+	}
+
+	testPodAdditions := &v1alpha1.PodAdditions{
+		Containers: []corev1.Container{{
+			Name:  "test-container",
+			Image: "test-image",
+		}},
+		InitContainers: []corev1.Container{{
+			Name:  "init-persistent-home",
+			Image: "test-image",
+		}, {
+			Name:  "test-container",
+			Image: "test-image",
+		}},
+	}
+
+	for _, tt := range tests {
+		t.Run(fmt.Sprintf("%s (%s)", tt.Name, tt.TestPath), func(t *testing.T) {
+			podAdditions := testPodAdditions.DeepCopy()
+			testAPI := sync.ClusterAPI{
+				Client: fake.NewClientBuilder().WithObjects(tt.Input.allObjects...).Build(),
+			}
+
+			err := ProvisionAutoMountResourcesInto(podAdditions, testAPI, testNamespace, true)
+
+			if !assert.NoError(t, err, "Unexpected error") {
+				return
+			}
+			assert.Truef(t, cmp.Equal(tt.Output.Volumes, podAdditions.Volumes, testDiffOpts),
+				"Volumes should match expected output:\n%s",
+				cmp.Diff(tt.Output.Volumes, podAdditions.Volumes, testDiffOpts))
+
+			for _, container := range podAdditions.Containers {
+				assert.Truef(t, cmp.Equal(tt.Output.VolumeMounts, container.VolumeMounts, testDiffOpts),
+					"Container VolumeMounts should match expected output:\n%s",
+					cmp.Diff(tt.Output.VolumeMounts, container.VolumeMounts, testDiffOpts))
+				assert.Truef(t, cmp.Equal(tt.Output.EnvFrom, container.EnvFrom, testDiffOpts),
+					"Container EnvFrom should match expected output:\n%s",
+					cmp.Diff(tt.Output.EnvFrom, container.EnvFrom, testDiffOpts))
+			}
+
+			for _, container := range podAdditions.InitContainers {
+				if container.Name == "init-persistent-home" {
+					assert.Truef(t, container.VolumeMounts == nil || len(container.VolumeMounts) == 0,
+						"The init-persistent-home container should not have any volume mounts if persistent home is enabled")
+				} else {
+					assert.Truef(t, cmp.Equal(tt.Output.VolumeMounts, container.VolumeMounts, testDiffOpts),
+						"Container VolumeMounts should match expected output:\n%s",
+						cmp.Diff(tt.Output.VolumeMounts, container.VolumeMounts, testDiffOpts))
+					assert.Truef(t, cmp.Equal(tt.Output.EnvFrom, container.EnvFrom, testDiffOpts),
+						"Container EnvFrom should match expected output:\n%s",
+						cmp.Diff(tt.Output.EnvFrom, container.EnvFrom, testDiffOpts))
+				}
+			}
+
+		})
+	}
+}