Update TextVisualizer

Author: ferpasri

core/src/org/testar/monkey/alayer/visualizers/TextVisualizer.java

@@ -30,6 +30,9 @@
 
 package org.testar.monkey.alayer.visualizers;
 
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.testar.monkey.Assert;
 import org.testar.monkey.Pair;
 import org.testar.monkey.alayer.Canvas;
@@ -43,6 +46,9 @@
 public final class TextVisualizer implements Visualizer {
 
 	private static final long serialVersionUID = 9156304220974950751L;
+
+	protected static final Logger logger = LogManager.getLogger();
+
 	final Position pos;
 	final String text;
 	final Pen pen;
@@ -59,16 +65,21 @@ public String getText() {
 	}
 
 	public TextVisualizer withText(String newText, Pen newPen) {
+		Assert.notNull(newText, newPen);
 		return new TextVisualizer(this.pos, newText, newPen);
 	}
 
 	public void run(State state, Canvas cv, Pen pen) {
 		Assert.notNull(state, cv, pen);
 		pen = Pen.merge(pen, this.pen);
 		try {
-			Point p = pos.apply(state);			
+			Point p = pos.apply(state);
 			Pair<Double, Double> m = cv.textMetrics(pen, text);
 			cv.text(pen, p.x() - m.left() / 2, p.y() - m.right() / 2, 0, text);
-		} catch (PositionException pe) {}			
+		} catch (PositionException pe) {
+			logger.log(Level.ERROR, pe);
+		} catch (NullPointerException ne) {
+			logger.log(Level.ERROR, ne);
+		}
 	}
 }

core/test/org/testar/monkey/alayer/visualizers/TextVisualizerTest.java

@@ -0,0 +1,94 @@
+package org.testar.monkey.alayer.visualizers;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.testar.monkey.Pair;
+import org.testar.monkey.alayer.AbsolutePosition;
+import org.testar.monkey.alayer.Canvas;
+import org.testar.monkey.alayer.Pen;
+import org.testar.stub.StateStub;
+
+public class TextVisualizerTest {
+
+    private final String originalText = "original_text";
+    private final String updatedText = "updated_text";
+
+    private final Pen originalPen = Pen.PEN_BLUE;
+    private final Pen updatedPen = Pen.PEN_RED;
+
+    @Test
+    public void test_correct_original_textVisualizer() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        assertTrue(textVisualizer.getText().equals(originalText));
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_original_null_pos() {
+        new TextVisualizer(null, originalText, originalPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_original_null_text() {
+        new TextVisualizer(new AbsolutePosition(1, 1), null, originalPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_original_null_pen() {
+        new TextVisualizer(new AbsolutePosition(1, 1), originalText, null);
+    }
+
+    @Test
+    public void test_correct_updated_textVisualizer() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer = textVisualizer.withText(updatedText, updatedPen);
+        assertTrue(textVisualizer.getText().equals(updatedText));
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_updated_null_text() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer.withText(null, updatedPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_updated_null_pen() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer.withText(updatedText, null);
+    }
+
+    @Test
+    public void test_run_visualizer() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        Canvas mockCanvas = Mockito.mock(Canvas.class);
+        Mockito.when(mockCanvas.textMetrics(Mockito.any(Pen.class), Mockito.anyString())).thenReturn(new Pair<Double, Double>(2.0, 2.0));
+        textVisualizer.run(new StateStub(), mockCanvas, updatedPen);
+    }
+
+    public void test_run_catched_null_position() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        Canvas mockCanvas = Mockito.mock(Canvas.class);
+        Mockito.when(mockCanvas.textMetrics(Mockito.any(Pen.class), Mockito.anyString())).thenReturn(null);
+        textVisualizer.run(new StateStub(), mockCanvas, updatedPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_run_null_state() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer.run(null, Mockito.mock(Canvas.class), updatedPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_run_null_canvas() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer.run(new StateStub(), null, updatedPen);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void test_run_null_pen() {
+        TextVisualizer textVisualizer = new TextVisualizer(new AbsolutePosition(1, 1), originalText, originalPen);
+        textVisualizer.run(new StateStub(), Mockito.mock(Canvas.class), null);
+    }
+
+}