Add Gameboard.java and GameboardTest.java

src/main/java/Gameboard.java

@@ -0,0 +1,8 @@
+public class Gameboard {
+    int[][] board;
+
+    public Gameboard() {
+        board = new int[11][11];
+    }
+
+}

src/test/java/GameboardTest.java

@@ -0,0 +1,36 @@
+import static org.assertj.core.api.Assertions.*;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class GameboardTest {
+
+    private Gameboard gb;
+
+    @BeforeEach
+    void setup() {
+        gb = new Gameboard();
+    }
+
+    @Test
+    void checkGameboardSize() {
+        String expectedResult = "11, 11";
+        String currentResult = "" + gb.board.length + ", " + gb.board[0].length;
+
+        assertThat(currentResult).describedAs("Dimensions").isEqualTo(expectedResult);
+    }
+
+    @Test
+    void checkGameboardFilled() {
+        int[][] expectedGameboard = new int[11][11];
+        for(int i = 0; i < expectedGameboard.length; i++) {
+            for(int j = 0; j < expectedGameboard[0].length; j++) {
+                expectedGameboard[i][j] = 0;
+            }
+        }
+        int [][] givenGameboard = gb.board;
+
+        assertThat(givenGameboard).describedAs("Initial Gameboard").isEqualTo(expectedGameboard);
+    }
+
+}