diff --git a/src/main/c/hangman.h b/src/main/c/hangman.h
new file mode 100644
index 0000000..8d2ac70
--- /dev/null
+++ b/src/main/c/hangman.h
@@ -0,0 +1,23 @@
+#ifndef TEST_H
+#define TEST_H
+
+void protokoll();
+void clear_screen();
+void willkommen();
+int namePruefen();
+void nameWaehlen();
+void startauswahl();
+void nameAusgeben();
+void levelauswahl();
+void hauptSpiel(int level);
+void zeichne_galgen(int versuche);
+void erratenen_buchstaben_hinzufuegen(char* guessed_letters, char guessed_letter);
+char eingabe_buchstabe();
+void hole_zu_erratendes_wort(char* secret_word, int level, char* path);
+void zeige_Buchstabenfeld(char secret_word[100], char guessed_letters[100]);
+int buchstabe_im_zu_erratenden_wort(char guessed_letter, char secret_word[100]);
+int gewonnen(char secret_word[100], char guessed_letters[100]);
+void level_plus();
+int overlay();
+
+#endif // TEST_H
diff --git a/src/main/c/hangman.txt b/src/main/c/hangman.txt
index 4456b2e..4e41ffd 100644
--- a/src/main/c/hangman.txt
+++ b/src/main/c/hangman.txt
@@ -1 +1 @@
-name:peter,level:01
\ No newline at end of file
+name:peter,level:02
\ No newline at end of file
diff --git a/src/test/c/test_hangman_test.c b/src/test/c/test_hangman_test.c
new file mode 100644
index 0000000..b29661a
--- /dev/null
+++ b/src/test/c/test_hangman_test.c
@@ -0,0 +1,24 @@
+#ifdef TEST
+
+#include "unity.h"
+#include "hangman.h"
+
+void setUp(void) {}
+
+void tearDown(void) {}
+
+void test_Buchstabe_im_zu_erratenden_wort_eingabe_j_in_leerstring_falsch() {
+    // arrange
+	int expected = 1;
+    int actual;
+	char guessed_letter = 'j';
+	char secret_word[100] = "";
+	
+    // act
+	actual = Buchstabe_im_zu_erratenden_wort(guessed_letter, secret_word);
+	
+    // assert
+	TEST_ASSERT_EQUAL_INT(expected, actual);
+}
+
+#endif // TEST