diff -r 627e1c99bcf1 -r a95423d37588 src/test/java/de/uapcore/sudoku/ButtonPanelTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/test/java/de/uapcore/sudoku/ButtonPanelTest.java	Tue Jul 28 13:48:59 2020 +0200
@@ -0,0 +1,42 @@
+package de.uapcore.sudoku;
+
+import org.junit.jupiter.api.Test;
+
+import javax.swing.*;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class ButtonPanelTest {
+
+    @Test
+    void testButtonsPresent() {
+        final var panel = new ButtonPanel(new ActionHandler(new Field()));
+        assertEquals(3, panel.getComponentCount());
+
+        assertTrue(panel.getComponent(0) instanceof JButton);
+        assertEquals("Speichern", ((JButton)panel.getComponent(0)).getText());
+        assertTrue(panel.getComponent(1) instanceof JButton);
+        assertEquals("Prüfen", ((JButton)panel.getComponent(1)).getText());
+        assertTrue(panel.getComponent(2) instanceof JButton);
+        assertEquals("Lösen", ((JButton)panel.getComponent(2)).getText());
+    }
+
+    @Test
+    void testActionListener() {
+        final var ah = new ActionHandler(new Field());
+        final var panel = new ButtonPanel(ah);
+        assertEquals(3, panel.getComponentCount());
+
+        final var save = (JButton)panel.getComponent(0);
+        final var check = (JButton)panel.getComponent(1);
+        final var solve = (JButton)panel.getComponent(2);
+
+        assertEquals(1, save.getActionListeners().length);
+        assertEquals(ah, save.getActionListeners()[0]);
+        assertEquals(1, check.getActionListeners().length);
+        assertEquals(ah, check.getActionListeners()[0]);
+        assertEquals(1, solve.getActionListeners().length);
+        assertEquals(ah, solve.getActionListeners()[0]);
+    }
+}