* Added test for #6823.

Mage.Tests/src/test/java/org/mage/test/cards/abilities/oneshot/counterspell/CounterspellTest.java

@@ -1,8 +1,8 @@
-
 package org.mage.test.cards.abilities.oneshot.counterspell;
 
 import mage.constants.PhaseStep;
 import mage.constants.Zone;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.mage.test.serverside.base.CardTestPlayerBase;
 
@@ -10,29 +10,26 @@ import org.mage.test.serverside.base.CardTestPlayerBase;
  *
  * @author LevelX2
  */
-
 public class CounterspellTest extends CardTestPlayerBase {
 
     /**
-        It looks like Boom//Bust can't be countered (although it says it's countered in the log).
+     * It looks like Boom//Bust can't be countered (although it says it's
-
+     * countered in the log).
-        Code: Select all
+     *
-            13:10: Benno casts Boom [8ce] targeting Mountain [4c8] Island [80c]
+     * Code: Select all 13:10: Benno casts Boom [8ce] targeting Mountain [4c8]
-            13:10: Benno casts Counterspell [2b7] targeting Boom [8ce]
+     * Island [80c] 13:10: Benno casts Counterspell [2b7] targeting Boom [8ce]
-            13:10: Benno puts Boom [8ce] from stack into their graveyard
+     * 13:10: Benno puts Boom [8ce] from stack into their graveyard 13:10: Boom
-            13:10: Boom is countered by Counterspell [2b7]
+     * is countered by Counterspell [2b7] 13:10: Benno puts Counterspell [2b7]
-            13:10: Benno puts Counterspell [2b7] from stack into their graveyard
+     * from stack into their graveyard 13:10: Mountain [4c8] was destroyed
-            13:10: Mountain [4c8] was destroyed
+     * 13:10: Island [80c] was destroyed
-            13:10: Island [80c] was destroyed
      */
-    
     @Test
     public void testCounterSplitSpell() {
         // Boom - Sorcery   {1}{R}
-        // Destroy target land you control and target land you don't control.        
+        // Destroy target land you control and target land you don't control.
         addCard(Zone.HAND, playerA, "Boom // Bust");
         addCard(Zone.BATTLEFIELD, playerA, "Mountain", 2);
-        
+
         addCard(Zone.BATTLEFIELD, playerB, "Island", 2);
         addCard(Zone.HAND, playerB, "Counterspell");
 
@@ -44,11 +41,63 @@ public class CounterspellTest extends CardTestPlayerBase {
 
         assertGraveyardCount(playerA, "Boom // Bust", 1);
         assertGraveyardCount(playerB, "Counterspell", 1);
-        
+
         assertPermanentCount(playerA, "Mountain", 2);
         assertPermanentCount(playerB, "Island", 2);
-        
+
         assertLife(playerA, 20);
         assertLife(playerB, 20);
     }
+
+    /**
+     * https://github.com/magefree/mage/issues/6823
+     *
+     * I cast Lightning Bolt, then tried to counter it with Memory Lapse, then
+     * Twincast the Memory Lapse, using the copy to counter the original.
+     *
+     * Expected result: Original Memory Lapse countered, put on top of library;
+     * Lightning Bolt resolves
+     *
+     * Actual Result: Original Memory Lapse says it gets countered, but still
+     * resolves, Lightning Bolt is countered and put on top of library
+     *
+     * Of particular note, both the original and the copy of Memory Lapse have
+     * the same card ID (6b5), which seems likely to cause issues.
+     */
+    @Test
+    @Ignore
+    public void testCopyCounterToCounter() {
+        // Lightning Bolt deals 3 damage to any target.
+        addCard(Zone.HAND, playerA, "Lightning Bolt");
+        // Copy target instant or sorcery spell. You may choose new targets for the copy.
+        addCard(Zone.HAND, playerA, "Twincast");
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+
+        addCard(Zone.BATTLEFIELD, playerB, "Island", 2);
+        // Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.
+        addCard(Zone.HAND, playerB, "Memory Lapse"); // Instant {1}{U}
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Lightning Bolt", playerA);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerB, "Memory Lapse", "Lightning Bolt");
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Twincast", "Memory Lapse");
+
+        setChoice(playerA, "Yes"); // change the target
+        addTarget(playerA, "Memory Lapse");
+
+        setStrictChooseMode(true);
+
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerA, "Lightning Bolt", 1);
+        assertGraveyardCount(playerA, "Twincast", 1);
+
+        assertLibraryCount(playerB, "Memory Lapse", 1);
+
+        assertLife(playerA, 20);
+        assertLife(playerB, 17);
+    }
 }