Added Tests for tableCellRenderer

src/test/java/de/vogel612/helper/data/TranslationTableRendererTests.java

@@ -0,0 +1,50 @@
+package de.vogel612.helper.data;
+
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+
+import java.awt.Color;
+import java.awt.Component;
+
+import javax.swing.JTable;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class TranslationTableRendererTests {
+
+	private final TranslationTableRenderer cut = new TranslationTableRenderer();
+
+	JTable table;
+
+	@Before
+	public void setup() {
+		table = mock(JTable.class);
+	}
+
+	@Test
+	public void testNullTable_returnsDefaultTableRendererResult() {
+		Component actual = cut.getTableCellRendererComponent(null, null, false,
+				false, 0, 0);
+		assertEquals(null, actual.getBackground());
+	}
+
+	@Test
+	public void testDifferentValues_returnsWhiteBackgroundComponent() {
+		doReturn("").when(table).getValueAt(0, 0);
+		doReturn("asd").when(table).getValueAt(0, 1);
+		Component actual = cut.getTableCellRendererComponent(table, null,
+				false, false, 0, 0);
+		assertEquals(Color.WHITE, actual.getBackground());
+	}
+
+	@Test
+	public void testEqualValues_returnsYellowBackgroundComponent() {
+		doReturn("asd").when(table).getValueAt(0, 0);
+		doReturn("asd").when(table).getValueAt(0, 1);
+		Component actual = cut.getTableCellRendererComponent(table, "asd",
+				false, false, 0, 0);
+		assertEquals(Color.YELLOW, actual.getBackground());
+	}
+}