Added verify tests for watchers copy;

Mage.Sets/src/mage/cards/w/WookieeMystic.java

@@ -1,16 +1,12 @@
-
 package mage.cards.w;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.UUID;
 import mage.MageInt;
 import mage.MageObject;
 import mage.Mana;
 import mage.abilities.Ability;
 import mage.abilities.costs.common.TapSourceCost;
-import mage.abilities.effects.mana.BasicManaEffect;
 import mage.abilities.effects.common.ManaEffect;
+import mage.abilities.effects.mana.BasicManaEffect;
 import mage.abilities.mana.SimpleManaAbility;
 import mage.cards.CardImpl;
 import mage.cards.CardSetInfo;
@@ -26,8 +22,11 @@ import mage.game.permanent.Permanent;
 import mage.game.stack.Spell;
 import mage.watchers.Watcher;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
 /**
- *
  * @author Styxo
  */
 public final class WookieeMystic extends CardImpl {
@@ -45,21 +44,21 @@ public final class WookieeMystic extends CardImpl {
         ManaEffect effect = new BasicManaEffect(mana);
         effect.setText("Add {R}. If that mana is spent on a creature spell, it enters the battlefield with a +1/+1 counter on it");
         Ability ability = new SimpleManaAbility(Zone.BATTLEFIELD, effect, new TapSourceCost());
-        this.addAbility(ability, new WookieeMysticWatcher(ability));
+        this.addAbility(ability, new WookieeMysticWatcher().withParams(ability));
 
         mana = Mana.GreenMana(1);
         mana.setFlag(true);
         effect = new BasicManaEffect(mana);
         effect.setText("Add {G}. If that mana is spent on a creature spell, it enters the battlefield with a +1/+1 counter on it");
         ability = new SimpleManaAbility(Zone.BATTLEFIELD, effect, new TapSourceCost());
-        this.addAbility(ability, new WookieeMysticWatcher(ability));
+        this.addAbility(ability, new WookieeMysticWatcher().withParams(ability));
 
         mana = Mana.WhiteMana(1);
         mana.setFlag(true);
         effect = new BasicManaEffect(mana);
         effect.setText("Add {W}. If that mana is spent on a creature spell, it enters the battlefield with a +1/+1 counter on it");
         ability = new SimpleManaAbility(Zone.BATTLEFIELD, effect, new TapSourceCost());
-        this.addAbility(ability, new WookieeMysticWatcher(ability));
+        this.addAbility(ability, new WookieeMysticWatcher().withParams(ability));
     }
 
     public WookieeMystic(final WookieeMystic card) {
@@ -74,23 +73,16 @@ public final class WookieeMystic extends CardImpl {
 
 class WookieeMysticWatcher extends Watcher {
 
-    private final Ability source;
+    private Ability source;
-    private final List<UUID> creatures = new ArrayList<>();
+    private List<UUID> creatures = new ArrayList<>();
 
-    WookieeMysticWatcher(Ability source) {
+    WookieeMysticWatcher() {
         super(WatcherScope.CARD);
+    }
+
+    Watcher withParams(Ability source) {
         this.source = source;
-    }
+        return this;
-
-    WookieeMysticWatcher(final WookieeMysticWatcher watcher) {
-        super(watcher);
-        this.creatures.addAll(watcher.creatures);
-        this.source = watcher.source;
-    }
-
-    @Override
-    public WookieeMysticWatcher copy() {
-        return new WookieeMysticWatcher(this);
     }
 
     @Override

Mage.Verify/src/test/java/mage/verify/VerifyCardDataTest.java

@@ -414,7 +414,7 @@ public class VerifyCardDataTest {
     }
 
     @Test
-    @Ignore // TODO: enable it on copy() methods removing
+    //@Ignore // TODO: enable it on copy() methods removing
     public void checkWatcherCopyMethods() {
 
         Collection<String> errorsList = new ArrayList<>();
@@ -424,6 +424,13 @@ public class VerifyCardDataTest {
         Set<Class<? extends Watcher>> watcherClassesList = reflections.getSubTypesOf(Watcher.class);
 
         for (Class<? extends Watcher> watcherClass : watcherClassesList) {
+
+            // only watcher class can be extended (e.g. final)
+            if (!watcherClass.getSuperclass().equals(Watcher.class)) {
+                errorsList.add("error, only Watcher class can be extended: " + watcherClass.getName());
+            }
+
+            // no copy methods
             try {
                 Method m = watcherClass.getMethod("copy");
                 if (!m.getGenericReturnType().getTypeName().equals("T")) {
@@ -432,6 +439,34 @@ public class VerifyCardDataTest {
             } catch (NoSuchMethodException e) {
                 errorsList.add("error, can't find copy() method in watcher class: " + watcherClass.getName());
             }
+
+            // no constructor for copy
+            try {
+                Constructor<? extends Watcher> constructor = watcherClass.getDeclaredConstructor(watcherClass);
+                errorsList.add("error, copy constructor is not allowed in watcher class: " + watcherClass.getName());
+            } catch (NoSuchMethodException e) {
+                // all fine, no needs in copy constructors
+            }
+
+            // errors on create
+            try {
+                Constructor<? extends Watcher> constructor = watcherClass.getDeclaredConstructor();
+                constructor.setAccessible(true);
+                Watcher w1 = constructor.newInstance();
+
+                // errors on copy
+                try {
+                    Watcher w2 = w1.copy();
+                    if (w2 == null) {
+                        errorsList.add("error, can't copy watcher with unknown error, look at error logs above: " + watcherClass.getName());
+                    }
+                } catch (Exception e) {
+                    errorsList.add("error, can't copy watcher: " + watcherClass.getName() + " (" + e.getMessage() + ")");
+                }
+            } catch (Exception e) {
+                errorsList.add("error, can't create watcher: " + watcherClass.getName() + " (" + e.getMessage() + ")");
+            }
+
         }
 
         printMessages(warningsList);

Mage/src/main/java/mage/watchers/Watcher.java

@@ -1,10 +1,7 @@
-
 package mage.watchers;
 
-import mage.Mana;
 import mage.constants.WatcherScope;
 import mage.game.Game;
-import mage.game.turn.Step;
 import mage.game.events.GameEvent;
 import org.apache.log4j.Logger;
 
@@ -26,8 +23,7 @@ public abstract class Watcher implements Serializable {
     protected UUID controllerId;
     protected UUID sourceId;
     protected boolean condition;
-    protected final WatcherScope scope;
+    protected WatcherScope scope;
-
 
     public Watcher(WatcherScope scope) {
         this.scope = scope;
@@ -81,11 +77,15 @@ public abstract class Watcher implements Serializable {
         return getClass().getSimpleName();
     }
 
+    public void setScope(WatcherScope scope) {
+        this.scope = scope;
+    }
+
     public abstract void watch(GameEvent event, Game game);
 
     public <T extends Watcher> T copy() {
         try {
-            List<?> constructors = Arrays.asList(this.getClass().getConstructors());
+            List<?> constructors = Arrays.asList(this.getClass().getDeclaredConstructors()); // needs private constructor
             if (constructors.size() > 1) {
                 logger.error(getClass().getSimpleName() + " has multiple constructors");
                 return null;