tictactoe: added test cases for fieldIsEmpty method and created constructor with gameboard as parameter

src/main/java/de/tims/tictactoe/GameLogic.java

@@ -1,5 +1,7 @@
 package de.tims.tictactoe;
 
+import java.util.Arrays;
+
 public class GameLogic {
 	
 	private char[][] board;
@@ -18,6 +20,10 @@ public class GameLogic {
 		}
 	}
 
+	public GameLogic(char[][] board) {
+		this.board = board;
+	}
+
 	public char[][] getBoard() {
 		return this.board;
 	}
@@ -31,8 +37,12 @@ public class GameLogic {
 	}
 
 	public boolean fieldIsEmpty(int column, int row) {
-		// TODO Auto-generated method stub
-		return true;
+		if (this.board[column][row] == emptyField) {
+			System.out.println(Arrays.toString(this.board));
+			return true;
+		} else {
+			return false;
+		}
 	}
 
 }

src/test/java/de/tims/tictactoe/GameLogicTest.java

@@ -63,7 +63,8 @@ class GameLogicTest {
 	 @ParameterizedTest(name = "[{index}] {0}")
 	 @MethodSource("testCasesForCheckEmptyField")
 	 void fieldIsEmptyTest(String testName, int columnToCheck, int rowToCheck, boolean expectedResult, char[][] board) {
-			boolean realResult = this.game.fieldIsEmpty(columnToCheck, rowToCheck);
+		 	GameLogic game = new GameLogic(board);
+			boolean realResult = game.fieldIsEmpty(columnToCheck, rowToCheck);
 			
 			assertEquals(expectedResult, realResult);
 	 }
@@ -94,9 +95,17 @@ class GameLogicTest {
 	 private static Stream<Arguments> testCasesForCheckEmptyField() {
 		    return Stream.of(
 		    			Arguments.of("check an empty field", 0, 0, true, new char[][] 
-								    											 {{'-', '-', '-'}, 
-								    											  {'-', '-', '-'},
-								    											  {'-', '-', '-'}})
+						    											 {{'-', '-', '-'}, 
+						    											  {'-', '-', '-'},
+						    											  {'-', '-', '-'}}),
+		    			Arguments.of("check a field set by player 1", 0, 0, false, new char[][] 
+																				 {{'x', '-', '-'}, 
+																				  {'-', '-', '-'},
+																				  {'-', '-', '-'}}),
+		    			Arguments.of("check a field set by player 2", 0, 0, false, new char[][] 
+																				 {{'o', '-', '-'}, 
+																				  {'-', '-', '-'},
+																				  {'-', '-', '-'}})
 		    		);
 	 }