diff --git a/src/main/c/Mathe.c b/src/main/c/Mathe.c
index d4bb7dc..858a96f 100644
--- a/src/main/c/Mathe.c
+++ b/src/main/c/Mathe.c
@@ -189,4 +189,4 @@ int mainx() {
     printf("Vielen Dank fürs Spielen! Auf Wiedersehen.\n");
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/src/main/c/Mathe.h b/src/main/c/Mathe.h
index 9c04579..d0e1b2c 100644
--- a/src/main/c/Mathe.h
+++ b/src/main/c/Mathe.h
@@ -7,4 +7,4 @@ int dividiere(int zahl1, int zahl2);
 int addiere(int zahl1, int zahl2); 
 int subtrahiere(int zahl1, int zahl2);
 int multipliziere(int zahl1, int zahl2);
-#endif // MATHEMATIKSPIE
\ No newline at end of file
+#endif // MATHEMATIKSPIE
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 4f61ea7..0000000
--- a/src/test/c/test_test.c
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifdef TEST
-
-#include "unity.h"
-
-#include "test.h"
-
-void setUp(void)
-{
-}
-
-void tearDown(void)
-{
-}
-
-void test_test__return_5(void)
-{
-    /* arrange */
-	int expected = 5;
-	int actual;
-
-    /* act */
-	actual = return_5();
-
-    /* assert */
-	TEST_ASSERT_EQUAL_INT(expected, actual);
-}
-
-#endif // TEST