diff --git a/aesjni/.gitignore b/aesjni/.gitignore
index 796b96d..3cb62b2 100644
--- a/aesjni/.gitignore
+++ b/aesjni/.gitignore
@@ -1 +1,2 @@
 /build
+main/obj
\ No newline at end of file
diff --git a/aesjni/src/test/java/com/androidyuan/aesjni/ExampleUnitTest.java b/aesjni/src/test/java/com/androidyuan/aesjni/ExampleUnitTest.java
deleted file mode 100644
index b6f7a55..0000000
--- a/aesjni/src/test/java/com/androidyuan/aesjni/ExampleUnitTest.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.androidyuan.aesjni;
-
-import org.junit.Test;
-
-import static org.junit.Assert.*;
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-public class ExampleUnitTest {
-
-    @Test
-    public void addition_isCorrect() throws Exception {
-
-        assertEquals(4, 2 + 2);
-    }
-}
\ No newline at end of file
diff --git a/app/src/test/java/com/androidyuan/aesjniencrypt/ExampleUnitTest.java b/app/src/test/java/com/androidyuan/aesjniencrypt/ExampleUnitTest.java
deleted file mode 100644
index 4f56955..0000000
--- a/app/src/test/java/com/androidyuan/aesjniencrypt/ExampleUnitTest.java
+++ /dev/null
@@ -1,19 +0,0 @@
-package com.androidyuan.aesjniencrypt;
-
-import org.junit.Test;
-
-import static org.junit.Assert.*;
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-public class ExampleUnitTest {
-
-    @Test
-    public void addition_isCorrect() throws Exception {
-
-        assertEquals(4, 2 + 2);
-    }
-}
\ No newline at end of file