Add Visualizer join method

Author: ferpasri

CHANGELOG

@@ -1,6 +1,7 @@
 #TESTAR v2.7.20 (3-Feb-2026)
 - Fix android SPY is displayed property
 - Add Rect overlap method
+- Add Visualizer join method
 
 #TESTAR v2.7.19 (27-Jan-2026)
 - Bump org.seleniumhq.selenium:selenium-java from 4.39.0 to 4.40.0

core/src/org/testar/monkey/alayer/Verdict.java

@@ -1,7 +1,7 @@
 /***************************************************************************************************
  *
- * Copyright (c) 2013 - 2025 Universitat Politecnica de Valencia - www.upv.es
- * Copyright (c) 2018 - 2025 Open Universiteit - www.ou.nl
+ * Copyright (c) 2013 - 2026 Universitat Politecnica de Valencia - www.upv.es
+ * Copyright (c) 2018 - 2026 Open Universiteit - www.ou.nl
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -213,7 +213,7 @@ public Verdict join(Verdict verdict) {
 		String joinedInfo = this.info.contains(verdict.info()) ? this.info
 				: (this.severity == Severity.OK.getValue() ? "" : this.info + "\n") + verdict.info();
 
-		Visualizer joinedVisualizer = (this.severity >= verdict.severity()) ? this.visualizer() : verdict.visualizer();
+		Visualizer joinedVisualizer = Visualizer.join(this.visualizer(), verdict.visualizer());
 
 		return new Verdict(joinedSeverity, joinedInfo, joinedVisualizer);
 	}

core/src/org/testar/monkey/alayer/Visualizer.java

@@ -1,7 +1,7 @@
 /***************************************************************************************************
  *
- * Copyright (c) 2013 - 2025 Universitat Politecnica de Valencia - www.upv.es
- * Copyright (c) 2018 - 2025 Open Universiteit - www.ou.nl
+ * Copyright (c) 2013 - 2026 Universitat Politecnica de Valencia - www.upv.es
+ * Copyright (c) 2018 - 2026 Open Universiteit - www.ou.nl
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -31,13 +31,42 @@
 package org.testar.monkey.alayer;
 
 import java.io.Serializable;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import org.testar.monkey.Assert;
+import org.testar.monkey.Util;
+
 public interface Visualizer extends Serializable {
 	void run(State state, Canvas canvas, Pen pen);
 
 	default List<Shape> getShapes() {
 		return Arrays.asList(Rect.from(0, 0, 0, 0));
 	}
+
+	static Visualizer join(Visualizer first, Visualizer second) {
+		if (first == second) return first;
+		if (first == Util.NullVisualizer) return second;
+		if (second == Util.NullVisualizer) return first;
+
+		return new Visualizer() {
+			private static final long serialVersionUID = 1L;
+
+			@Override
+			public void run(State state, Canvas canvas, Pen pen) {
+				Assert.notNull(state, canvas, pen);
+				first.run(state, canvas, pen);
+				second.run(state, canvas, pen);
+			}
+
+			@Override
+			public List<Shape> getShapes() {
+				ArrayList<Shape> merged = new ArrayList<>();
+				merged.addAll(first.getShapes());
+				merged.addAll(second.getShapes());
+				return merged;
+			}
+		};
+	}
 }

core/test/org/testar/monkey/alayer/VerdictTest.java

@@ -1,7 +1,7 @@
 /***************************************************************************************************
  *
- * Copyright (c) 2013 - 2025 Universitat Politecnica de Valencia - www.upv.es
- * Copyright (c) 2018 - 2025 Open Universiteit - www.ou.nl
+ * Copyright (c) 2013 - 2026 Universitat Politecnica de Valencia - www.upv.es
+ * Copyright (c) 2018 - 2026 Open Universiteit - www.ou.nl
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -32,7 +32,11 @@
 
 import static org.junit.Assert.*;
 
+import java.util.Arrays;
+
 import org.junit.Test;
+import org.testar.monkey.alayer.visualizers.RegionsVisualizer;
+import org.testar.monkey.alayer.visualizers.ShapeVisualizer;
 
 public class VerdictTest {
 
@@ -43,10 +47,17 @@ public class VerdictTest {
 		public void run(State s, Canvas c, Pen pen) {}	
 	};
 
-	private final Visualizer failVisualizer = new Visualizer(){
-		private static final long serialVersionUID = -2732461936562344367L;
-		public void run(State s, Canvas c, Pen pen) {}	
-	};
+	private final Visualizer failVisualizer = new ShapeVisualizer(
+					Pen.PEN_RED, 
+					Rect.from(0, 0, 10, 10), 
+					"Fail Visualizer", 
+					0.5, 0.5);
+
+	private final Visualizer issueVisualizer = new RegionsVisualizer(
+					Pen.PEN_RED, 
+					Arrays.asList(Rect.from(0, 0, 10, 10)), 
+					"Issue Visualizer", 
+					0.5, 0.5);
 
 	@Test
 	public void testToString() {
@@ -60,6 +71,7 @@ public void testJoin() {
 		Verdict v1 = new Verdict(Verdict.Severity.OK, "Foo Bar");
 		Verdict v2 = new Verdict(Verdict.Severity.FAIL, "Bar", failVisualizer);
 		Verdict v3 = new Verdict(Verdict.Severity.OK, "Baz", dummyVisualizer);
+		Verdict v4 = new Verdict(Verdict.Severity.FAIL, "Exception", issueVisualizer);
 
 		assertTrue("Joining two Verdicts shall create a new Verdict", 
 				v1 != v1.join(v2));
@@ -79,11 +91,17 @@ public void testJoin() {
 				"then both infos shall be included separated by a line break",
 				"Bar\nBaz", v2.join(v3).info());
 
-		assertTrue("Joining two Verdicts shall use the Visualizer of the Verdict with high severity",
+		assertTrue("Joining an OK and Fail Verdicts shall use the Visualizer of the Verdict with high severity",
 				v2.join(v1).visualizer() == failVisualizer);
 
-		assertTrue("Joining two Verdicts shall use the Visualizer of the Verdict with high severity",
+		assertTrue("Joining an OK and Fail Verdicts shall use the Visualizer of the Verdict with high severity",
 				v1.join(v2).visualizer() == failVisualizer);
+
+		assertTrue("Joining Fail and Issue Verdicts must contain Fail Shapes",
+				v2.join(v4).visualizer().getShapes().containsAll(failVisualizer.getShapes()));
+
+		assertTrue("Joining Fail and Issue Verdicts must contain Issue Shapes",
+				v2.join(v4).visualizer().getShapes().containsAll(issueVisualizer.getShapes()));
 	}
 
 	@Test