Add UT for pkg/driver/fileOps.go (#242)

* Add UT for pkg/driver/fileOps.go

* Add UT for pkg/driver/fileOps.go

* Add UT for pkg/driver/fileOps.go

* UT for fileOps.go

Author: Bhagyashreek8

Makefile

@@ -63,7 +63,7 @@ driver: deps buildimage
 
 .PHONY: build
 build:
-	CGO_ENABLED=0 GOOS=linux go build -mod=vendor -v -ldflags '-X main.version=${git_commit_id} -extldflags "-static"' -o ${GOPATH}/bin/${EXE_DRIVER_NAME} ./cmd/$*
+	CGO_ENABLED=0 GOOS=linux go build -mod=mod -v -ldflags '-X main.version=${git_commit_id} -extldflags "-static"' -o ${GOPATH}/bin/${EXE_DRIVER_NAME} ./cmd/$*
 
 
 .PHONY: buildimage

pkg/driver/fileOps.go

@@ -2,7 +2,7 @@
  * IBM Confidential
  * OCO Source Materials
  * IBM Cloud Kubernetes Service, 5737-D43
- * (C) Copyright IBM Corp. 2023 All Rights Reserved.
+ * (C) Copyright IBM Corp. 2025 All Rights Reserved.
  * The source code for this program is not published or otherwise divested of
  * its trade secrets, irrespective of what has been deposited with
  * the U.S. Copyright Office.

pkg/driver/fileOps_test.go

@@ -0,0 +1,163 @@
+/*******************************************************************************
+ * IBM Confidential
+ * OCO Source Materials
+ * IBM Cloud Kubernetes Service, 5737-D43
+ * (C) Copyright IBM Corp. 2025 All Rights Reserved.
+ * The source code for this program is not published or otherwise divested of
+ * its trade secrets, irrespective of what has been deposited with
+ * the U.S. Copyright Office.
+ ******************************************************************************/
+
+package driver
+
+import (
+	"errors"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// mockSocketPermission implements the socketPermission interface
+type mockSocketPermission struct {
+	chownCalled int
+	chmodCalled int
+
+	chownArgs struct {
+		name string
+		uid  int
+		gid  int
+	}
+	chmodArgs struct {
+		name string
+		mode os.FileMode
+	}
+
+	chownErr error
+	chmodErr error
+}
+
+func (m *mockSocketPermission) Chown(name string, uid, gid int) error {
+	m.chownCalled++
+	m.chownArgs = struct {
+		name string
+		uid  int
+		gid  int
+	}{name, uid, gid}
+	return m.chownErr
+}
+
+func (m *mockSocketPermission) Chmod(name string, mode os.FileMode) error {
+	m.chmodCalled++
+	m.chmodArgs = struct {
+		name string
+		mode os.FileMode
+	}{name, mode}
+	return m.chmodErr
+}
+
+func TestSetupSidecar(t *testing.T) {
+	tests := []struct {
+		name               string
+		groupID            string
+		expectedErr        bool
+		chownErr           error
+		chmodErr           error
+		expectedChownCalls int
+		expectedChmodCalls int
+		expectedGroupID    int
+	}{
+		{
+			name:               "ValidGroupID",
+			groupID:            "2121",
+			expectedErr:        false,
+			chownErr:           nil,
+			chmodErr:           nil,
+			expectedChownCalls: 1,
+			expectedChmodCalls: 1,
+			expectedGroupID:    2121,
+		},
+		{
+			name:               "InvalidGroupID",
+			groupID:            "notanint",
+			expectedErr:        true,
+			chownErr:           nil,
+			chmodErr:           nil,
+			expectedChownCalls: 0,
+			expectedChmodCalls: 0,
+		},
+		{
+			name:               "EmptyGroupID",
+			groupID:            "",
+			expectedErr:        false,
+			chownErr:           nil,
+			chmodErr:           nil,
+			expectedChownCalls: 1,
+			expectedChmodCalls: 1,
+			expectedGroupID:    0, // Default to 0 if SIDECAR_GROUP_ID is empty
+		},
+		{
+			name:               "ChownError",
+			groupID:            "1000",
+			expectedErr:        true,
+			chownErr:           errors.New("chown error"),
+			chmodErr:           nil,
+			expectedChownCalls: 1,
+			expectedChmodCalls: 0, // No chmod expected if chown fails
+			expectedGroupID:    1000,
+		},
+		{
+			name:               "ChmodError",
+			groupID:            "1000",
+			expectedErr:        true,
+			chownErr:           nil,
+			chmodErr:           errors.New("chmod error"),
+			expectedChownCalls: 1,
+			expectedChmodCalls: 1,
+			expectedGroupID:    1000,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			// Set SIDECAR_GROUP_ID environment variable
+			if tc.groupID != "" {
+				err := os.Setenv("SIDECAR_GROUP_ID", tc.groupID)
+				assert.NoError(t, err)
+			} else {
+				err := os.Unsetenv("SIDECAR_GROUP_ID")
+				assert.NoError(t, err)
+			}
+			defer os.Unsetenv("SIDECAR_GROUP_ID") // nolint:errcheck
+
+			mock := &mockSocketPermission{
+				chownErr: tc.chownErr,
+				chmodErr: tc.chmodErr,
+			}
+
+			// Creating test logger
+			logger, teardown := GetTestLogger(t)
+			defer teardown()
+
+			// Call the function under test
+			err := setupSidecar("/mock/socket", mock, logger)
+
+			// Verify the result
+			if tc.expectedErr {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+
+			// Verify the number of times Chown and Chmod were called
+			assert.Equal(t, tc.expectedChownCalls, mock.chownCalled)
+			assert.Equal(t, tc.expectedChmodCalls, mock.chmodCalled)
+
+			if tc.expectedChownCalls > 0 {
+				assert.Equal(t, -1, mock.chownArgs.uid)
+				assert.Equal(t, tc.expectedGroupID, mock.chownArgs.gid)
+				assert.Equal(t, "/mock/socket", mock.chownArgs.name)
+			}
+		})
+	}
+}