tictactoe: added method to check if field is not set

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

@@ -3,6 +3,7 @@ package de.tims.tictactoe;
 public class GameLogic {
 	
 	private char[][] board;
+	private final char emptyField = '-';
 
 	public GameLogic(int size) {
 		if (size < 3) {
@@ -26,7 +27,12 @@ public class GameLogic {
 	}
 
 	public void setField(int column, int row, char player) {
-		this.board[column][row] = player;
+			this.board[column][row] = player;
+	}
+
+	public boolean fieldIsEmpty(int column, int row) {
+		// TODO Auto-generated method stub
+		return true;
 	}
 
 }

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

@@ -60,6 +60,14 @@ class GameLogicTest {
 			assertArrayEquals(expectedResult, realResult);
 	 }
 	 
+	 @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);
+			
+			assertEquals(expectedResult, realResult);
+	 }
+	 
 	 private static Stream<Arguments> testCasesForCountPlayfields() {
 		    return Stream.of(
 		    			Arguments.of("1x1 board with too few fields", 1, 9),
@@ -82,5 +90,14 @@ class GameLogicTest {
 																				  {'-', '-', '-'}})
 		    		);
 	 }
+	 
+	 private static Stream<Arguments> testCasesForCheckEmptyField() {
+		    return Stream.of(
+		    			Arguments.of("check an empty field", 0, 0, true, new char[][] 
+								    											 {{'-', '-', '-'}, 
+								    											  {'-', '-', '-'},
+								    											  {'-', '-', '-'}})
+		    		);
+	 }
 		
 }