diff --git a/fileutil/file_example_test.go b/fileutil/file_example_test.go
index 7e8e350..d945e6f 100644
--- a/fileutil/file_example_test.go
+++ b/fileutil/file_example_test.go
@@ -226,7 +226,7 @@ func ExampleUnZip() {
 
 func ExampleIsZipFile() {
 	result1 := IsZipFile("./file.go")
-	result2 := IsZipFile("./test/file.go.zip")
+	result2 := IsZipFile("./testdata/file.go.zip")
 
 	fmt.Println(result1)
 	fmt.Println(result2)
diff --git a/fileutil/file_test.go b/fileutil/file_test.go
index 0b0921f..74a795e 100644
--- a/fileutil/file_test.go
+++ b/fileutil/file_test.go
@@ -251,5 +251,5 @@ func TestIsZipFile(t *testing.T) {
 	assert := internal.NewAssert(t, "TestIsZipFile")
 
 	assert.Equal(false, IsZipFile("./file.go"))
-	assert.Equal(true, IsZipFile("./test/file.go.zip"))
+	assert.Equal(true, IsZipFile("./testdata/file.go.zip"))
 }
diff --git a/fileutil/testdata/file.go.zip b/fileutil/testdata/file.go.zip
new file mode 100644
index 0000000..2383a1e
Binary files /dev/null and b/fileutil/testdata/file.go.zip differ