Added some tests.

Mage.Sets/src/mage/sets/magic2015/GoblinRabblemaster.java

@@ -46,7 +46,6 @@ import mage.constants.Rarity;
 import mage.constants.TargetController;
 import mage.constants.Zone;
 import mage.filter.common.FilterCreaturePermanent;
-import mage.filter.predicate.mageobject.SubtypePredicate;
 import mage.filter.predicate.permanent.AnotherPredicate;
 import mage.filter.predicate.permanent.AttackingPredicate;
 import mage.filter.predicate.permanent.ControllerPredicate;

Mage.Tests/src/test/java/org/mage/test/cards/requirement/AttackRequirementTest.java

@@ -0,0 +1,91 @@
+/*
+ *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package org.mage.test.cards.requirement;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ *
+ * @author LevelX2
+ */
+
+public class AttackRequirementTest extends CardTestPlayerBase {
+
+
+    @Test
+    public void testSimpleAttackRequirement() {
+        // Defender
+        // {G}: Wall of Tanglecord gains reach until end of turn. (It can block creatures with flying.)
+        addCard(Zone.BATTLEFIELD, playerA, "Wall of Tanglecord"); // 0/6
+        
+        // Juggernaut attacks each turn if able.
+        // Juggernaut can't be blocked by Walls
+        addCard(Zone.BATTLEFIELD, playerB, "Juggernaut"); // 5/3
+        
+        // Juggernaut should be forced to ttack 
+        block(2, playerA, "Wall of Tanglecord", "Juggernaut"); // this block should'nt work because of Juggernauts restriction
+
+        setStopAt(2, PhaseStep.POSTCOMBAT_MAIN);
+        execute();
+
+        assertLife(playerA, 15); 
+        assertLife(playerB, 20);
+
+    }
+
+
+    @Test
+    public void testAttackRequirementWithAttackRestriction() {
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        // Defender
+        // {G}: Wall of Tanglecord gains reach until end of turn. (It can block creatures with flying.)
+        addCard(Zone.BATTLEFIELD, playerA, "Wall of Tanglecord"); // 0/6
+        
+        // Creatures can't attack you unless their controller pays {2} for each creature he or she controls that's attacking you
+        addCard(Zone.HAND, playerA, "Ghostly Prison");
+        
+        // Juggernaut attacks each turn if able.
+        // Juggernaut can't be blocked by Walls
+        addCard(Zone.BATTLEFIELD, playerB, "Juggernaut"); // 5/3
+        
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Ghostly Prison");
+        
+        // Juggernaut is forced to attack but can't without paying the Ghostly Prison cost and don't has to pay the costs so no attack
+
+        setStopAt(2, PhaseStep.POSTCOMBAT_MAIN);
+        execute();
+
+        assertLife(playerA, 20); 
+        assertLife(playerB, 20);
+
+    }
+    
+}