lab_move direction W y --> 0

src/main/c/labyrinth.c

@@ -36,6 +36,10 @@ void lab_move(unsigned short *x, unsigned short *y, Direction direction){
         *x = *x + 1;
         return;
     }
+    if (direction == W){
+        *y = 0;
+        return;
+    }
 
 }
 

src/test/c/test_labyrinth.c

@@ -166,3 +166,20 @@ void test_lab_move_from_5_5_S_expected_6_5(void)
 	TEST_ASSERT_TRUE(x == x_expected && y == y_expected);
 }
 
+void test_lab_move_from_1_1_W_expected_1_0(void)
+{
+    /* arrange */
+	unsigned short x = 1;
+	unsigned short y = 1;
+    Direction direction = W;
+	
+	unsigned short x_expected = 1;
+	unsigned short y_expected = 0;
+
+    /* act */
+    lab_move(&x, &y, direction);
+
+    /* assert */
+	TEST_ASSERT_TRUE(x == x_expected && y == y_expected);
+}
+