tictactoe: fixed fieldCountTest. Now works with different playfield sizes

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

@@ -14,7 +14,7 @@ public class GameLogic {
 
 	public int countFields() {
 		// TODO Auto-generated method stub
-		return 9;
+		return this.board[0].length * this.board.length;
 	}
 
 }

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

@@ -1,10 +1,16 @@
 package de.tims.tictactoe;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.stream.Stream;
 
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
 
 class GameLogicTest {
 
@@ -35,12 +41,21 @@ class GameLogicTest {
 		assertArrayEquals(expectedResult, realResult);
 	}
 	
-	@Test
-	void fieldCountTest() {
-		int expectedResult = 9;
-		int realResult = game.countFields();
-		
-		assertEquals(expectedResult, realResult);
-	}
+	 @ParameterizedTest(name = "[{index}] {0} -> {1}")
+	 @MethodSource("testCasesForCountPlayfields")
+	 void fieldCountTest(String testName, int size, int expectedResult) {
+		 	GameLogic game = new GameLogic(size);
+			int realResult = game.countFields();
+			
+			assertEquals(expectedResult, realResult);
+	 }
+	 
+	 private static Stream<Arguments> testCasesForCountPlayfields() {
+		    return Stream.of(
+		    			Arguments.of("3x3 board with 9 playfields", 3, 9),
+		    			Arguments.of("4x4 board with 16 playfields", 4, 16),
+		    			Arguments.of("5x5 board with 25 playfields", 5,25)
+		    		);
+	 }
 		
 }