diff --git a/core/adapter/cocafile/file_analysis_helper.go b/core/adapter/cocafile/file_analysis_helper.go
index 6b866ddc8aa6824f0eb806f0933407db5ff2daa1..f1bc20ceb6a9ca7b02d69c55c4c30bf49a158ae8 100644
--- a/core/adapter/cocafile/file_analysis_helper.go
+++ b/core/adapter/cocafile/file_analysis_helper.go
@@ -10,44 +10,26 @@ import (
 	"strings"
 )
 
-func GetJavaFiles(codeDir string) []string {
-	files := make([]string, 0)
-	gitIgnore, err := ignore.CompileIgnoreFile(".gitignore")
-	if err != nil {
-		//fmt.Println(err)
-	}
-
-	fi, err := os.Stat(codeDir)
-	if err != nil {
-		fmt.Println(err)
-		return nil
-	}
+var javaCodeFileFilter = func(path string) bool {
+	return strings.HasSuffix(path, ".java") && !strings.Contains(path, "Test.java") && !strings.Contains(path, "Tests.java")
+}
 
-	if fi.Mode().IsRegular() {
-		files = append(files, codeDir)
-		return files
+var javaTestFileFilter = func(path string) bool {
+	if strings.Contains(path, "Test.java") || strings.Contains(path, "Tests.java") {
+		return true
 	}
+	return false
+}
 
-	_ = filepath.Walk(codeDir, func(path string, fi os.FileInfo, err error) error {
-		if gitIgnore != nil {
-			if gitIgnore.MatchesPath(path) {
-				return nil
-			}
-		}
-
-		if strings.HasSuffix(path, ".java") && !strings.Contains(path, "Test.java") && !strings.Contains(path, "Tests.java") {
-			files = append(files, path)
-		}
-		return nil
-	})
-	return files
+func GetJavaFiles(codeDir string) []string {
+	return GetFilesWithFilter(codeDir, javaCodeFileFilter)
 }
 
-func GetJavaTestFiles(codeDir string) []string {
+func GetFilesWithFilter(codeDir string, filter func(path string) bool) []string {
 	files := make([]string, 0)
 	gitIgnore, err := ignore.CompileIgnoreFile(".gitignore")
 	if err != nil {
-		fmt.Println(err)
+		//fmt.Println(err)
 	}
 
 	fi, err := os.Stat(codeDir)
@@ -68,7 +50,7 @@ func GetJavaTestFiles(codeDir string) []string {
 			}
 		}
 
-		if strings.Contains(path, "Test.java") || strings.Contains(path, "Tests.java") {
+		if filter(path) {
 			files = append(files, path)
 		}
 		return nil
@@ -76,6 +58,10 @@ func GetJavaTestFiles(codeDir string) []string {
 	return files
 }
 
+func GetJavaTestFiles(codeDir string) []string {
+	return GetFilesWithFilter(codeDir, javaTestFileFilter)
+}
+
 func ProcessFile(path string) *JavaParser {
 	is, _ := antlr.NewFileStream(path)
 	lexer := NewJavaLexer(is)
diff --git a/core/context/deps/dep_app.go b/core/context/deps/dep_app.go
index d14359765bc9f4ed6bf0cb4cf7412338a51dfaba..8a5a3f50461873e8eeaa9ae3569bc8b76b3e27f1 100644
--- a/core/context/deps/dep_app.go
+++ b/core/context/deps/dep_app.go
@@ -21,4 +21,3 @@ func (d *DepApp) BuildImportMap(deps []domain.JClassNode) map[string]domain.JImp
 
 	return impMap
 }
-
diff --git a/core/context/deps/dep_app_test.go b/core/context/deps/dep_app_test.go
index 4605c3f550a7b57e66b565817ca2d8928c151dd5..f4d0d2216626ae9a5f992f3fe067d7cd88c0ac08 100644
--- a/core/context/deps/dep_app_test.go
+++ b/core/context/deps/dep_app_test.go
@@ -78,3 +78,16 @@ func Test_ShouldCountDeps_WhenHadClassNodes(t *testing.T) {
 
 	g.Expect(len(importMap)).To(Equal(25))
 }
+
+//func Test_ListUnusedImportForOneGradleFile(t *testing.T) {
+//	g := NewGomegaWithT(t)
+//
+//	codePath := "../../../_fixtures/deps/maven_sample/"
+//	classNodes, _, _ := cocatest.BuildAnalysisDeps(codePath)
+//
+//	depApp := NewDepApp()
+//	importMap := depApp.BuildImportMap(classNodes)
+//
+//	fmt.Println(importMap)
+//	g.Expect(len(importMap)).To(Equal(2))
+//}