完成Tracker.java接口开发,update path

Change-Id: I8b1096af3aa3c7ebdf623905c5d47cfe72b86da2
diff --git a/src/test/java/databasetest/DataManagerTest.java b/src/test/java/databasetest/DataManagerTest.java
new file mode 100644
index 0000000..1256240
--- /dev/null
+++ b/src/test/java/databasetest/DataManagerTest.java
@@ -0,0 +1,5 @@
+package databasetest;
+
+public class DataManagerTest {
+    
+}