diff --git a/.gitignore b/.gitignore
index c2c4a5a..030e9aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-target/**
\ No newline at end of file
+target/**
+src/test/c/test_test.c
diff --git a/src/main/c/Mathe.c b/src/main/c/Mathe.c
index 059b4e6..377b6b4 100644
--- a/src/main/c/Mathe.c
+++ b/src/main/c/Mathe.c
@@ -187,4 +187,4 @@ int mainx() {
     printf("Vielen Dank fürs Spielen! Auf Wiedersehen.\n");
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/src/main/c/a.exe b/src/main/c/a.exe
deleted file mode 100644
index 0e3a6cc..0000000
Binary files a/src/main/c/a.exe and /dev/null differ
diff --git a/src/test/c/test_Mathe.c b/src/test/c/test_Mathe.c
new file mode 100644
index 0000000..3fce345
--- /dev/null
+++ b/src/test/c/test_Mathe.c
@@ -0,0 +1,20 @@
+#ifdef TEST
+#include "unity.h"
+#include "Mathe.h"
+void setUp(void)
+{
+}
+
+void tearDown(void)
+{
+}
+
+void test_Mathe_plus(void)
+{
+   
+  int a=berechneErgebnis(1,2,'+');
+    /* assert */
+	TEST_ASSERT_EQUAL_INT(a,3);
+}
+
+#endif
diff --git a/src/test/c/test_test.c b/src/test/c/test_test.c
deleted file mode 100644
index e69de29..0000000