diff --git a/src/test/test_duellist_spielesammlung_projekt.c b/src/test/test_duellist_spielesammlung_projekt.c
index 1c9738c..53d2e0d 100644
--- a/src/test/test_duellist_spielesammlung_projekt.c
+++ b/src/test/test_duellist_spielesammlung_projekt.c
@@ -173,7 +173,19 @@ void test_BoardFull_returns_false_when_board_is_not_full(void) {
     // Assert
     TEST_ASSERT_FALSE(boardFull);
 }
+void test_BoardFull_returns_true_when_board_is_full(void) {
+    // Arrange
+    TicTacToeGame game = { .board = {{PLAYER_X, PLAYER_X, PLAYER_O},
+                                     {PLAYER_O, PLAYER_O, PLAYER_X},
+                                     {PLAYER_X, PLAYER_X, PLAYER_O}},
+                           .currentPlayer = PLAYER_X };
 
+    // Act
+    int boardFull = BoardFull(&game);
+
+    // Assert
+    TEST_ASSERT_TRUE(boardFull);
+}