diff --git a/pkg/drivers/hyperkit/iso_test.go b/pkg/drivers/hyperkit/iso_test.go
new file mode 100644
index 0000000000..8dda1e4a6e
--- /dev/null
+++ b/pkg/drivers/hyperkit/iso_test.go
@@ -0,0 +1,91 @@
+/*
+Copyright 2020 The Kubernetes Authors All rights reserved.
+
+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 hyperkit
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestExtractFile(t *testing.T) {
+	testDir, err := ioutil.TempDir(os.TempDir(), "")
+	if nil != err {
+		return
+	}
+	defer os.Remove(testDir)
+
+	tests := []struct {
+		name          string
+		isoPath       string
+		srcPath       string
+		destPath      string
+		expectedError bool
+	}{
+		{
+			name:          "all is right",
+			isoPath:       "iso_test.iso",
+			srcPath:       "/test1.txt",
+			destPath:      testDir + "/test1.txt",
+			expectedError: false,
+		},
+		{
+			name:          "isoPath is error",
+			isoPath:       "tests.iso",
+			srcPath:       "/test1.txt",
+			destPath:      testDir + "/test1.txt",
+			expectedError: true,
+		},
+		{
+			name:          "srcPath is empty",
+			isoPath:       "iso_tests.iso",
+			srcPath:       "",
+			destPath:      testDir + "/test1.txt",
+			expectedError: true,
+		},
+		{
+			name:          "srcPath is error",
+			isoPath:       "iso_tests.iso",
+			srcPath:       "/t1.txt",
+			destPath:      testDir + "/test1.txt",
+			expectedError: true,
+		},
+		{
+			name:          "destPath is empty",
+			isoPath:       "iso_test.iso",
+			srcPath:       "/test1.txt",
+			destPath:      "",
+			expectedError: true,
+		},
+		{
+			name:          "find files in a folder",
+			isoPath:       "./iso_test.iso",
+			srcPath:       "/test2/test2.txt",
+			destPath:      testDir + "/test2.txt",
+			expectedError: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := ExtractFile(tt.isoPath, tt.srcPath, tt.destPath)
+			if (nil != err) != tt.expectedError {
+				t.Errorf("expectedError = %v, get = %v", tt.expectedError, err)
+				return
+			}
+		})
+	}
+}
diff --git a/pkg/drivers/hyperkit/iso_test.iso b/pkg/drivers/hyperkit/iso_test.iso
new file mode 100644
index 0000000000..dbed69dd41
Binary files /dev/null and b/pkg/drivers/hyperkit/iso_test.iso differ