added setRoomPredecessor with test

src/c/map.c

@@ -1,4 +1,4 @@
-//headers
+// headers
 #include "map.h"
 
 Room *getMap(char *gameMapFile)
@@ -59,10 +59,22 @@ Room *getMap(char *gameMapFile)
 	return fillMap;
 };
 
-int getRoomSuccessor(Room *room){
+int getRoomSuccessor(Room *room)
+{
 	return room->successor;
 }
 
-void setRoomSuccessor(Room *room, int successorSet){
+void setRoomSuccessor(Room *room, int successorSet)
+{
 	room->successor = successorSet;
 }
+
+int getRoomPredecessor(Room *room)
+{
+	return room->predecessor;
+}
+
+void setRoomPredecessor(Room *room, int predecessorSet)
+{
+	room->predecessor = predecessorSet;
+}

src/c/map.h

@@ -30,6 +30,7 @@ Room *getMap(char *gameMapFile);
 int getRoomSuccessor(Room *room);
 void setRoomSuccessor(Room *room, int successorSet);
 
-
+int getRoomPredecessor(Room *room);
+void setRoomPredecessor(Room *room, int predecessorSet);
 
 #endif // MAP_H

test/c/test_map.c

@@ -80,6 +80,40 @@ void test_setRoomSuccessor(void)
     TEST_ASSERT_EQUAL(successor, result);
 }
 
+void test_getRoomPredecessor(void)
+{
+    // arrange
+    int predecessor = 1, result;
+    Room test;
+    test.predecessor = predecessor;
+
+    /* act */
+    // Die Funktion wird ausgeführt
+    result = getRoomPredecessor(&test);
+
+    // output
+    printf("getRoomPredecessor | Successor should be: %d -> is: %d", predecessor, result);
+
+    // assert
+    TEST_ASSERT_EQUAL(predecessor, result);
+}
+
+void test_setRoomPredecessor(void)
+{
+            // arrange
+    int predecessor = 3, result;
+
+    // act
+    Room test;
+    setRoomPredecessor(&test, predecessor);
+    result = test.predecessor;
+
+    //output
+    printf("setRoomPredecessor | successor to set: %d -> is: %d", predecessor, result);
+
+    // assert
+    TEST_ASSERT_EQUAL(predecessor, result);
+}
 
 
 #endif // TEST