diff --git a/app/src/test/java/ch/nuth/zhaw/exbox/ADS1_3_test.java b/app/src/test/java/ch/nuth/zhaw/exbox/ADS1_3_test.java
new file mode 100644
index 0000000..414be10
--- /dev/null
+++ b/app/src/test/java/ch/nuth/zhaw/exbox/ADS1_3_test.java
@@ -0,0 +1,29 @@
+package ch.nuth.zhaw.exbox;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class ADS1_3_test {
+    BracketServer bs;
+
+    @BeforeEach
+    public void setUp() {
+        bs = new BracketServer();
+    }
+
+    private void test(String content, boolean expected) {
+        assertEquals(expected, bs.checkBrackets(content), content);
+    }
+
+    @Test
+    public void testBracket() {
+        test("()", true);
+        test("(()]", false);
+        test("((([([])])))", true);
+        test("[(])", false);
+        test("[(3 +3)* 35 +3]* {3 +2}", true);
+        test("[({3 +3)* 35} +3]* {3 +2}", false);
+    }
+}