add unit test

Signed-off-by: zhoumingcheng <zhoumingcheng@beyondcent.com>

pkg/kubelet/util/util_unix_test.go

@@ -180,3 +180,28 @@ func TestGetAddressAndDialer(t *testing.T) {
 		assert.Equal(t, test.expectedAddr, addr)
 	}
 }
+
+func TestLocalEndpoint(t *testing.T) {
+	tests := []struct {
+		path             string
+		file             string
+		expectError      bool
+		expectedFullPath string
+	}{
+		{
+			path:             "path",
+			file:             "file",
+			expectError:      false,
+			expectedFullPath: "unix:/path/file.sock",
+		},
+	}
+	for _, test := range tests {
+		fullPath, err := LocalEndpoint(test.path, test.file)
+		if test.expectError {
+			assert.NotNil(t, err, "expected error")
+			continue
+		}
+		assert.Nil(t, err, "expected no error")
+		assert.Equal(t, test.expectedFullPath, fullPath)
+	}
+}