diff --git a/cmd/gf/internal/cmd/cmd__test.go b/cmd/gf/internal/cmd/cmd_z_init_test.go
similarity index 100%
rename from cmd/gf/internal/cmd/cmd__test.go
rename to cmd/gf/internal/cmd/cmd_z_init_test.go
diff --git a/cmd/gf/internal/cmd/cmd_fix_test.go b/cmd/gf/internal/cmd/cmd_z_unit_fix_test.go
similarity index 100%
rename from cmd/gf/internal/cmd/cmd_fix_test.go
rename to cmd/gf/internal/cmd/cmd_z_unit_fix_test.go
diff --git a/cmd/gf/internal/cmd/cmd_gen_ctrl_test.go b/cmd/gf/internal/cmd/cmd_z_unit_gen_ctrl_test.go
similarity index 98%
rename from cmd/gf/internal/cmd/cmd_gen_ctrl_test.go
rename to cmd/gf/internal/cmd/cmd_z_unit_gen_ctrl_test.go
index 03cdc284c..ca4bc06c5 100644
--- a/cmd/gf/internal/cmd/cmd_gen_ctrl_test.go
+++ b/cmd/gf/internal/cmd/cmd_z_unit_gen_ctrl_test.go
@@ -33,7 +33,6 @@ func Test_Gen_Ctrl_Default(t *testing.T) {
 			}
 		)
 		err := gutil.FillStructWithDefault(&in)
-
 		t.AssertNil(err)
 
 		err = gfile.Mkdir(path)
@@ -45,7 +44,7 @@ func Test_Gen_Ctrl_Default(t *testing.T) {
 			panic(err)
 		}
 
-		// apiInterface files
+		// apiInterface file
 		var (
 			genApi       = apiFolder + filepath.FromSlash("/article/article.go")
 			genApiExpect = apiFolder + filepath.FromSlash("/article/article_expect.go")
@@ -79,7 +78,7 @@ func Test_Gen_Ctrl_Default(t *testing.T) {
 			testPath + filepath.FromSlash("/article/article_v2_create.go"),
 			testPath + filepath.FromSlash("/article/article_v2_update.go"),
 		}
-		for i, _ := range files {
+		for i := range files {
 			t.Assert(gfile.GetContents(files[i]), gfile.GetContents(expectFiles[i]))
 		}
 	})
diff --git a/cmd/gf/internal/cmd/cmd_gen_dao_test.go b/cmd/gf/internal/cmd/cmd_z_unit_gen_dao_test.go
similarity index 100%
rename from cmd/gf/internal/cmd/cmd_gen_dao_test.go
rename to cmd/gf/internal/cmd/cmd_z_unit_gen_dao_test.go
diff --git a/cmd/gf/internal/cmd/cmd_z_unit_gen_service_test.go b/cmd/gf/internal/cmd/cmd_z_unit_gen_service_test.go
new file mode 100644
index 000000000..7f1f9c2fc
--- /dev/null
+++ b/cmd/gf/internal/cmd/cmd_z_unit_gen_service_test.go
@@ -0,0 +1,72 @@
+// Copyright GoFrame gf Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package cmd
+
+import (
+	"github.com/gogf/gf/cmd/gf/v2/internal/cmd/genservice"
+	"github.com/gogf/gf/v2/os/gfile"
+	"github.com/gogf/gf/v2/test/gtest"
+	"github.com/gogf/gf/v2/util/guid"
+	"github.com/gogf/gf/v2/util/gutil"
+	"path/filepath"
+	"testing"
+)
+
+func Test_Gen_Service_Default(t *testing.T) {
+	gtest.C(t, func(t *gtest.T) {
+		var (
+			path      = gfile.Temp(guid.S())
+			dstFolder = path + filepath.FromSlash("/service")
+			apiFolder = gtest.DataPath("genservice", "logic")
+			in        = genservice.CGenServiceInput{
+				SrcFolder:       apiFolder,
+				DstFolder:       dstFolder,
+				DstFileNameCase: "Snake",
+				WatchFile:       "",
+				StPattern:       "",
+				Packages:        nil,
+				ImportPrefix:    "",
+				Clear:           false,
+			}
+		)
+		err := gutil.FillStructWithDefault(&in)
+		t.AssertNil(err)
+
+		err = gfile.Mkdir(path)
+		t.AssertNil(err)
+		defer gfile.Remove(path)
+
+		_, err = genservice.CGenService{}.Service(ctx, in)
+		if err != nil {
+			panic(err)
+		}
+
+		// logic file
+		var (
+			genApi       = apiFolder + filepath.FromSlash("/logic.go")
+			genApiExpect = apiFolder + filepath.FromSlash("/logic_expect.go")
+		)
+		defer gfile.Remove(genApi)
+		t.Assert(gfile.GetContents(genApi), gfile.GetContents(genApiExpect))
+
+		// files
+		files, err := gfile.ScanDir(dstFolder, "*.go", true)
+		t.AssertNil(err)
+		t.Assert(files, []string{
+			dstFolder + filepath.FromSlash("/article.go"),
+		})
+
+		// contents
+		testPath := gtest.DataPath("genservice", "service")
+		expectFiles := []string{
+			testPath + filepath.FromSlash("/article.go"),
+		}
+		for i := range files {
+			t.Assert(gfile.GetContents(files[i]), gfile.GetContents(expectFiles[i]))
+		}
+	})
+}
diff --git a/cmd/gf/internal/cmd/testdata/genservice/logic/article/article.go b/cmd/gf/internal/cmd/testdata/genservice/logic/article/article.go
new file mode 100644
index 000000000..01d889a25
--- /dev/null
+++ b/cmd/gf/internal/cmd/testdata/genservice/logic/article/article.go
@@ -0,0 +1,33 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package article
+
+import (
+	"context"
+	"github.com/gogf/gf/cmd/gf/v2/internal/cmd/testdata/genservice/service"
+)
+
+type sArticle struct {
+}
+
+func init() {
+	service.RegisterArticle(&sArticle{})
+}
+
+// Get article details
+func (s *sArticle) Get(ctx context.Context, id uint) (info struct{}, err error) {
+	return struct{}{}, err
+}
+
+// Create
+/**
+ * create an article.
+ * @author oldme
+ */
+func (s *sArticle) Create(ctx context.Context, info struct{}) (id uint, err error) {
+	return id, err
+}
diff --git a/cmd/gf/internal/cmd/testdata/genservice/logic/logic_expect.go b/cmd/gf/internal/cmd/testdata/genservice/logic/logic_expect.go
new file mode 100644
index 000000000..c7c3f52e9
--- /dev/null
+++ b/cmd/gf/internal/cmd/testdata/genservice/logic/logic_expect.go
@@ -0,0 +1,9 @@
+// ==========================================================================
+// Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
+// ==========================================================================
+
+package logic
+
+import (
+	_ "github.com/gogf/gf/cmd/gf/v2/internal/cmd/testdata/genservice/logic/article"
+)
diff --git a/cmd/gf/internal/cmd/testdata/genservice/service/article.go b/cmd/gf/internal/cmd/testdata/genservice/service/article.go
new file mode 100644
index 000000000..765a1c8a5
--- /dev/null
+++ b/cmd/gf/internal/cmd/testdata/genservice/service/article.go
@@ -0,0 +1,38 @@
+// ================================================================================
+// Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
+// You can delete these comments if you wish manually maintain this interface file.
+// ================================================================================
+
+package service
+
+import (
+	"context"
+)
+
+type (
+	IArticle interface {
+		// Get article details
+		Get(ctx context.Context, id uint) (info struct{}, err error)
+		// Create
+		/**
+		 * create an article.
+		 * @author oldme
+		 */
+		Create(ctx context.Context, info struct{}) (id uint, err error)
+	}
+)
+
+var (
+	localArticle IArticle
+)
+
+func Article() IArticle {
+	if localArticle == nil {
+		panic("implement not found for interface IArticle, forgot register?")
+	}
+	return localArticle
+}
+
+func RegisterArticle(i IArticle) {
+	localArticle = i
+}