diff --git a/project/src/test/java/com/example/AppTest.java b/project/src/test/java/com/example/AppTest.java
new file mode 100644
index 0000000..929dfd6
--- /dev/null
+++ b/project/src/test/java/com/example/AppTest.java
@@ -0,0 +1,20 @@
+package com.example;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class AppTest {
+    @Test
+    public void testAdd() {
+        App app = new App();
+        int result = app.add(2, 3);
+        assertEquals(5, result);
+    }
+
+    @Test
+    public void testAddNegative() {
+        App app = new App();
+        int result = app.add(-1, 1);
+        assertEquals(0, result);
+    }
+}