tictactoe: added test case to check field clicked state in gui

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

@@ -1,12 +1,13 @@
 package de.tims.tictactoe;
 
 import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 
-import javax.swing.BoxLayout;
 import javax.swing.JButton;
 import javax.swing.JPanel;
 
-public class GameLogic {
+public class GameLogic implements ActionListener {
 
 	private static final char PLAYER_1 = 'x';
 	private static final char PLAYER_2 = 'o';
@@ -110,9 +111,20 @@ public class GameLogic {
 		
 		for (int i = 0; i < this.fields.length; i++) {
 			this.fields[i] = new JButton();
+			this.fields[i].addActionListener(this);
 			this.contentPanel.add(this.fields[i]);
 		}
 		return this.contentPanel;
 	}
 
+	public JButton getGUIField(int number) {
+		// TODO Auto-generated method stub
+		return this.fields[number];
+	}
+
+	@Override
+	public void actionPerformed(ActionEvent e) {
+		// TODO Auto-generated method stub
+	}
+
 }

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

@@ -81,6 +81,18 @@ class GameLogicTest {
 		assertEquals(expectedResult, realResult);
 	}
 	
+	@Test
+	void buttonStateTest() {
+		boolean expectedResult = true;
+		game.generateGUI();
+		
+		JButton currentField = game.getGUIField(0);
+		((JButton) currentField).doClick();
+		boolean realResult = currentField.isEnabled();
+		
+		assertEquals(expectedResult, realResult);
+	}
+	
 	 @ParameterizedTest(name = "[{index}] {0} -> {2} fields")
 	 @MethodSource("testCasesForCountPlayfields")
 	 void fieldCountTest(String testName, int size, int expectedResult) {