new event TabCompleteRequestEvent and deprecate TabCompleteEvent

Players with permission bungeecord.multiple_connect can have multiple connections with the same Minecraft account.
The UUID and player name is altered to avoid collision with other player:
UUID : xxxxxxxx-xxxx-VIxx-xxxx-xxxxxxxxxxxx
- The UUID version (V above) is now the provided version + 8 (for online player, it is 4, so it becomes C).
- The I digit will follow the index of the duplicated player : first duplicated player is 1, second one is 2.
- The name of the player will be the real player name, followed by the character "." (dot) followed by the duplication index.

Bedrock accounts connected using the Floodgate plugin will not be able to connect multiple times due to the risk of xUID collision.

api/src/test/java/net/md_5/bungee/api/ServerConnectRequestTest.java

@@ -1,12 +1,13 @@
 package net.md_5.bungee.api;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.util.Collection;
 import net.md_5.bungee.api.config.ServerInfo;
 import net.md_5.bungee.api.connection.ProxiedPlayer;
 import net.md_5.bungee.api.event.ServerConnectEvent;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class ServerConnectRequestTest
 {
@@ -78,15 +79,15 @@ public class ServerConnectRequestTest
         }
     };
 
-    @Test(expected = NullPointerException.class)
+    @Test
     public void testNullTarget()
     {
-        ServerConnectRequest.builder().target( null ).reason( ServerConnectEvent.Reason.JOIN_PROXY ).build();
+        assertThrows( NullPointerException.class, () -> ServerConnectRequest.builder().target( null ).reason( ServerConnectEvent.Reason.JOIN_PROXY ).build() );
     }
 
-    @Test(expected = NullPointerException.class)
+    @Test
     public void testNullReason()
     {
-        ServerConnectRequest.builder().target( DUMMY_INFO ).reason( null ).build();
+        assertThrows( NullPointerException.class, () -> ServerConnectRequest.builder().target( DUMMY_INFO ).reason( null ).build() );
     }
 }

api/src/test/java/net/md_5/bungee/util/AddressParseTest.java

@@ -1,63 +1,38 @@
 package net.md_5.bungee.util;
 
+import static org.junit.jupiter.api.Assertions.*;
 import io.netty.channel.unix.DomainSocketAddress;
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
-import java.util.Arrays;
+import java.util.stream.Stream;
-import java.util.Collection;
 import lombok.RequiredArgsConstructor;
 import net.md_5.bungee.Util;
-import org.junit.Assert;
+import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.Test;
+import org.junit.jupiter.params.provider.Arguments;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.params.provider.MethodSource;
-import org.junit.runners.Parameterized;
-import org.junit.runners.Parameterized.Parameters;
 
 @RequiredArgsConstructor
-@RunWith(Parameterized.class)
 public class AddressParseTest
 {
 
-    @Parameters
+    public static Stream<Arguments> data()
-    public static Collection<Object[]> data()
     {
-        return Arrays.asList( new Object[][]
+        return Stream.of(
-        {
+                Arguments.of( "127.0.0.1", "127.0.0.1", Util.DEFAULT_PORT ),
-            {
+                Arguments.of( "127.0.0.1:1337", "127.0.0.1", 1337 ),
-                "127.0.0.1", "127.0.0.1", Util.DEFAULT_PORT
+                Arguments.of( "[::1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT ),
-            },
+                Arguments.of( "[0:0:0:0::1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT ),
-            {
+                Arguments.of( "[0:0:0:0:0:0:0:1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT ),
-                "127.0.0.1:1337", "127.0.0.1", 1337
+                Arguments.of( "[::1]:1337", "0:0:0:0:0:0:0:1", 1337 ),
-            },
+                Arguments.of( "[0:0:0:0::1]:1337", "0:0:0:0:0:0:0:1", 1337 ),
-            {
+                Arguments.of( "[0:0:0:0:0:0:0:1]:1337", "0:0:0:0:0:0:0:1", 1337 ),
-                "[::1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT
+                Arguments.of( "unix:///var/run/bungee.sock", "/var/run/bungee.sock", -1 )
-            },
+        );
-            {
-                "[0:0:0:0::1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT
-            },
-            {
-                "[0:0:0:0:0:0:0:1]", "0:0:0:0:0:0:0:1", Util.DEFAULT_PORT
-            },
-            {
-                "[::1]:1337", "0:0:0:0:0:0:0:1", 1337
-            },
-            {
-                "[0:0:0:0::1]:1337", "0:0:0:0:0:0:0:1", 1337
-            },
-            {
-                "[0:0:0:0:0:0:0:1]:1337", "0:0:0:0:0:0:0:1", 1337
-            },
-            {
-                "unix:///var/run/bungee.sock", "/var/run/bungee.sock", -1
     }
-        } );
-    }
-    private final String line;
-    private final String host;
-    private final int port;
 
-    @Test
+    @ParameterizedTest
-    public void test()
+    @MethodSource("data")
+    public void test(String line, String host, int port)
     {
         SocketAddress parsed = Util.getAddr( line );
 
@@ -65,14 +40,14 @@ public class AddressParseTest
         {
             InetSocketAddress tcp = (InetSocketAddress) parsed;
 
-            Assert.assertEquals( host, tcp.getHostString() );
+            assertEquals( host, tcp.getHostString() );
-            Assert.assertEquals( port, tcp.getPort() );
+            assertEquals( port, tcp.getPort() );
         } else if ( parsed instanceof DomainSocketAddress )
         {
             DomainSocketAddress unix = (DomainSocketAddress) parsed;
 
-            Assert.assertEquals( host, unix.path() );
+            assertEquals( host, unix.path() );
-            Assert.assertEquals( -1, port );
+            assertEquals( -1, port );
         } else
         {
             throw new AssertionError( "Unknown socket " + parsed );

api/src/test/java/net/md_5/bungee/util/CaseInsensitiveTest.java

@@ -1,7 +1,7 @@
 package net.md_5.bungee.util;
 
-import org.junit.Assert;
+import static org.junit.jupiter.api.Assertions.*;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class CaseInsensitiveTest
 {
@@ -13,12 +13,12 @@ public class CaseInsensitiveTest
         CaseInsensitiveMap<Object> map = new CaseInsensitiveMap<>();
 
         map.put( "FOO", obj );
-        Assert.assertTrue( map.contains( "foo" ) ); // Assert that contains is case insensitive
+        assertTrue( map.contains( "foo" ) ); // Assert that contains is case insensitive
-        Assert.assertTrue( map.entrySet().iterator().next().getKey().equals( "FOO" ) ); // Assert that case is preserved
+        assertTrue( map.entrySet().iterator().next().getKey().equals( "FOO" ) ); // Assert that case is preserved
 
         // Assert that remove is case insensitive
         map.remove( "FoO" );
-        Assert.assertFalse( map.contains( "foo" ) );
+        assertFalse( map.contains( "foo" ) );
     }
 
     @Test
@@ -27,8 +27,8 @@ public class CaseInsensitiveTest
         CaseInsensitiveSet set = new CaseInsensitiveSet();
 
         set.add( "FOO" );
-        Assert.assertTrue( set.contains( "foo" ) ); // Assert that contains is case insensitive
+        assertTrue( set.contains( "foo" ) ); // Assert that contains is case insensitive
         set.remove( "FoO" );
-        Assert.assertFalse( set.contains( "foo" ) ); // Assert that remove is case insensitive
+        assertFalse( set.contains( "foo" ) ); // Assert that remove is case insensitive
     }
 }

api/src/test/java/net/md_5/bungee/util/UUIDTest.java

@@ -1,9 +1,9 @@
 package net.md_5.bungee.util;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.util.UUID;
 import net.md_5.bungee.Util;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class UUIDTest
 {
@@ -13,7 +13,7 @@ public class UUIDTest
     {
         UUID uuid = UUID.fromString( "af74a02d-19cb-445b-b07f-6866a861f783" );
         UUID uuid1 = Util.getUUID( "af74a02d19cb445bb07f6866a861f783" );
-        Assert.assertEquals( uuid, uuid1 );
+        assertEquals( uuid, uuid1 );
     }
 
     @Test
@@ -23,7 +23,7 @@ public class UUIDTest
         {
             UUID expected = UUID.randomUUID();
             UUID actual = Util.getUUID( expected.toString().replace( "-", "" ) );
-            Assert.assertEquals( "Could not parse UUID " + expected, expected, actual );
+            assertEquals( expected, actual, "Could not parse UUID " + expected );
         }
     }
 }

chat/src/test/java/net/md_5/bungee/api/chat/ComponentsTest.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee.api.chat;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.awt.Color;
 import java.util.function.BiFunction;
 import java.util.function.Consumer;
@@ -10,8 +11,7 @@ import net.md_5.bungee.api.ChatColor;
 import net.md_5.bungee.api.chat.hover.content.Item;
 import net.md_5.bungee.api.chat.hover.content.Text;
 import net.md_5.bungee.chat.ComponentSerializer;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class ComponentsTest
 {
@@ -20,14 +20,14 @@ public class ComponentsTest
     {
         String json = ComponentSerializer.toString( components );
         BaseComponent[] parsed = ComponentSerializer.parse( json );
-        Assert.assertEquals( TextComponent.toLegacyText( parsed ), TextComponent.toLegacyText( components ) );
+        assertEquals( TextComponent.toLegacyText( parsed ), TextComponent.toLegacyText( components ) );
     }
 
     public static void testDissembleReassemble(BaseComponent component)
     {
         String json = ComponentSerializer.toString( component );
         BaseComponent[] parsed = ComponentSerializer.parse( json );
-        Assert.assertEquals( TextComponent.toLegacyText( parsed ), TextComponent.toLegacyText( component ) );
+        assertEquals( TextComponent.toLegacyText( parsed ), TextComponent.toLegacyText( component ) );
     }
 
     public static void testAssembleDissemble(String json, boolean modern)
@@ -35,11 +35,11 @@ public class ComponentsTest
         if ( modern )
         {
             BaseComponent deserialized = ComponentSerializer.deserialize( json );
-            Assert.assertEquals( json, ComponentSerializer.toString( deserialized ) );
+            assertEquals( json, ComponentSerializer.toString( deserialized ) );
         } else
         {
             BaseComponent[] parsed = ComponentSerializer.parse( json );
-            Assert.assertEquals( json, ComponentSerializer.toString( parsed ) );
+            assertEquals( json, ComponentSerializer.toString( parsed ) );
         }
     }
 
@@ -69,7 +69,7 @@ public class ComponentsTest
         json = "{\"extra\":[{\"text\":\"[\"},{\"extra\":[{\"translate\":\"block.minecraft.dirt\"}],\"text\":\"\"},{\"text\":\"]\"}],\"hoverEvent\":{\"action\":\"show_item\",\"value\":[" + hoverVal + "]},\"text\":\"\"}";
         components = ComponentSerializer.parse( json );
         Text contentText = ( (Text) components[0].getHoverEvent().getContents().get( 0 ) );
-        Assert.assertEquals( hoverVal, ComponentSerializer.toString( (BaseComponent[]) contentText.getValue() ) );
+        assertEquals( hoverVal, ComponentSerializer.toString( (BaseComponent[]) contentText.getValue() ) );
         testDissembleReassemble( components );
         //////////
         TextComponent component1 = new TextComponent( "HoverableText" );
@@ -80,10 +80,10 @@ public class ComponentsTest
         json = ComponentSerializer.toString( component1 );
         components = ComponentSerializer.parse( json );
         Item parsedContentItem = ( (Item) components[0].getHoverEvent().getContents().get( 0 ) );
-        Assert.assertEquals( contentItem, parsedContentItem );
+        assertEquals( contentItem, parsedContentItem );
-        Assert.assertEquals( contentItem.getCount(), parsedContentItem.getCount() );
+        assertEquals( contentItem.getCount(), parsedContentItem.getCount() );
-        Assert.assertEquals( contentItem.getId(), parsedContentItem.getId() );
+        assertEquals( contentItem.getId(), parsedContentItem.getId() );
-        Assert.assertEquals( nbt, parsedContentItem.getTag().getNbt() );
+        assertEquals( nbt, parsedContentItem.getTag().getNbt() );
     }
 
     @Test
@@ -91,8 +91,8 @@ public class ComponentsTest
     {
         this.testEmptyComponentBuilder(
                 ComponentBuilder::create,
-                (components) -> Assert.assertEquals( components.length, 0 ),
+                (components) -> assertEquals( components.length, 0 ),
-                (components, size) -> Assert.assertEquals( size, components.length )
+                (components, size) -> assertEquals( size, components.length )
         );
     }
 
@@ -101,8 +101,8 @@ public class ComponentsTest
     {
         this.testEmptyComponentBuilder(
                 ComponentBuilder::build,
-                (component) -> Assert.assertNull( component.getExtra() ),
+                (component) -> assertNull( component.getExtra() ),
-                (component, size) -> Assert.assertEquals( component.getExtra().size(), size )
+                (component, size) -> assertEquals( component.getExtra().size(), size )
         );
     }
 
@@ -125,23 +125,23 @@ public class ComponentsTest
     public void testDummyRetaining()
     {
         ComponentBuilder builder = new ComponentBuilder();
-        Assert.assertNotNull( builder.getCurrentComponent() );
+        assertNotNull( builder.getCurrentComponent() );
         builder.color( ChatColor.GREEN );
         builder.append( "test ", ComponentBuilder.FormatRetention.ALL );
-        Assert.assertEquals( builder.getCurrentComponent().getColor(), ChatColor.GREEN );
+        assertEquals( builder.getCurrentComponent().getColor(), ChatColor.GREEN );
     }
 
-    @Test(expected = IndexOutOfBoundsException.class)
+    @Test
     public void testComponentGettingExceptions()
     {
         ComponentBuilder builder = new ComponentBuilder();
-        builder.getComponent( -1 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.getComponent( -1 ) );
-        builder.getComponent( 0 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.getComponent( 0 ) );
-        builder.getComponent( 1 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.getComponent( 1 ) );
         BaseComponent component = new TextComponent( "Hello" );
         builder.append( component );
-        Assert.assertEquals( builder.getComponent( 0 ), component );
+        assertEquals( builder.getComponent( 0 ), component );
-        builder.getComponent( 1 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.getComponent( 1 ) );
     }
 
     @Test
@@ -150,33 +150,33 @@ public class ComponentsTest
         ComponentBuilder builder = new ComponentBuilder();
         TextComponent apple = new TextComponent( "apple" );
         builder.append( apple );
-        Assert.assertEquals( builder.getCurrentComponent(), apple );
+        assertEquals( builder.getCurrentComponent(), apple );
-        Assert.assertEquals( builder.getComponent( 0 ), apple );
+        assertEquals( builder.getComponent( 0 ), apple );
 
         TextComponent mango = new TextComponent( "mango" );
         TextComponent orange = new TextComponent( "orange" );
         builder.append( mango );
         builder.append( orange );
         builder.removeComponent( 1 ); // Removing mango
-        Assert.assertEquals( builder.getComponent( 0 ), apple );
+        assertEquals( builder.getComponent( 0 ), apple );
-        Assert.assertEquals( builder.getComponent( 1 ), orange );
+        assertEquals( builder.getComponent( 1 ), orange );
     }
 
     @Test
     public void testToLegacyFromLegacy()
     {
         String text = "§a§lHello §f§kworld§7!";
-        Assert.assertEquals( text, TextComponent.toLegacyText( TextComponent.fromLegacyText( text ) ) );
+        assertEquals( text, TextComponent.toLegacyText( TextComponent.fromLegacyText( text ) ) );
     }
 
-    @Test(expected = IndexOutOfBoundsException.class)
+    @Test
     public void testComponentBuilderCursorInvalidPos()
     {
         ComponentBuilder builder = new ComponentBuilder();
         builder.append( new TextComponent( "Apple, " ) );
         builder.append( new TextComponent( "Orange, " ) );
-        builder.setCursor( -1 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.setCursor( -1 ) );
-        builder.setCursor( 2 );
+        assertThrows( IndexOutOfBoundsException.class, () -> builder.setCursor( 2 ) );
     }
 
     @Test
@@ -184,24 +184,24 @@ public class ComponentsTest
     {
         TextComponent t1, t2, t3;
         ComponentBuilder builder = new ComponentBuilder();
-        Assert.assertEquals( builder.getCursor(), -1 );
+        assertEquals( builder.getCursor(), -1 );
         builder.append( t1 = new TextComponent( "Apple, " ) );
-        Assert.assertEquals( builder.getCursor(), 0 );
+        assertEquals( builder.getCursor(), 0 );
         builder.append( t2 = new TextComponent( "Orange, " ) );
         builder.append( t3 = new TextComponent( "Mango, " ) );
-        Assert.assertEquals( builder.getCursor(), 2 );
+        assertEquals( builder.getCursor(), 2 );
 
         builder.setCursor( 0 );
-        Assert.assertEquals( builder.getCurrentComponent(), t1 );
+        assertEquals( builder.getCurrentComponent(), t1 );
 
         // Test that appending new components updates the position to the new list size
         // after having previously set it to 0 (first component)
         builder.append( new TextComponent( "and Grapefruit" ) );
-        Assert.assertEquals( builder.getCursor(), 3 );
+        assertEquals( builder.getCursor(), 3 );
 
         builder.setCursor( 0 );
         builder.resetCursor();
-        Assert.assertEquals( builder.getCursor(), 3 );
+        assertEquals( builder.getCursor(), 3 );
     }
 
     @Test
@@ -210,7 +210,7 @@ public class ComponentsTest
         String text = "§a§lHello §r§kworld§7!";
         BaseComponent[] components = TextComponent.fromLegacyText( text );
         BaseComponent[] builderComponents = new ComponentBuilder().append( components ).create();
-        Assert.assertArrayEquals( components, builderComponents );
+        assertArrayEquals( components, builderComponents );
     }
 
     /*
@@ -232,7 +232,7 @@ public class ComponentsTest
         component.setHoverEvent( event );
         String serialised = ComponentSerializer.toString( component );
         BaseComponent[] deserialised = ComponentSerializer.parse( serialised );
-        Assert.assertEquals( TextComponent.toLegacyText( deserialised ), TextComponent.toLegacyText( component ) );
+        assertEquals( TextComponent.toLegacyText( deserialised ), TextComponent.toLegacyText( component ) );
     }
      */
 
@@ -247,9 +247,9 @@ public class ComponentsTest
         );
         TextComponent component = new TextComponent( "test" );
         component.setHoverEvent( hoverEvent );
-        Assert.assertEquals( component.getHoverEvent().getContents().size(), 1 );
+        assertEquals( component.getHoverEvent().getContents().size(), 1 );
-        Assert.assertTrue( component.getHoverEvent().getContents().get( 0 ) instanceof Text );
+        assertTrue( component.getHoverEvent().getContents().get( 0 ) instanceof Text );
-        Assert.assertEquals( ( (Text) component.getHoverEvent().getContents().get( 0 ) ).getValue(), advancement );
+        assertEquals( ( (Text) component.getHoverEvent().getContents().get( 0 ) ).getValue(), advancement );
     }
 
     @Test
@@ -274,11 +274,11 @@ public class ComponentsTest
         TextComponent component = new TextComponent( "Sample text" );
         component.setHoverEvent( hoverEvent );
 
-        Assert.assertEquals( hoverEvent.getContents().size(), 1 );
+        assertEquals( hoverEvent.getContents().size(), 1 );
-        Assert.assertTrue( hoverEvent.isLegacy() );
+        assertTrue( hoverEvent.isLegacy() );
         String serialized = ComponentSerializer.toString( component );
         BaseComponent[] deserialized = ComponentSerializer.parse( serialized );
-        Assert.assertEquals( component.getHoverEvent(), deserialized[0].getHoverEvent() );
+        assertEquals( component.getHoverEvent(), deserialized[0].getHoverEvent() );
     }
 
     @Test
@@ -303,12 +303,12 @@ public class ComponentsTest
     {
         TextComponent component = new TextComponent( "Sample text" );
         component.setHoverEvent( hoverEvent );
-        Assert.assertEquals( hoverEvent.getContents().size(), 2 );
+        assertEquals( hoverEvent.getContents().size(), 2 );
-        Assert.assertFalse( hoverEvent.isLegacy() );
+        assertFalse( hoverEvent.isLegacy() );
 
         String serialized = ComponentSerializer.toString( component );
         T deserialized = deserializer.apply( serialized );
-        Assert.assertEquals( component.getHoverEvent(), hoverEventGetter.apply( deserialized ) );
+        assertEquals( component.getHoverEvent(), hoverEventGetter.apply( deserialized ) );
 
         // Test single content:
         String json = "{\"italic\":true,\"color\":\"gray\",\"translate\":\"chat.type.admin\",\"with\":[{\"text\":\"@\"}"
@@ -345,10 +345,10 @@ public class ComponentsTest
 
         TextComponent second = new TextComponent( " world" );
         second.copyFormatting( first, ComponentBuilder.FormatRetention.ALL, true );
-        Assert.assertEquals( first.isBold(), second.isBold() );
+        assertEquals( first.isBold(), second.isBold() );
-        Assert.assertEquals( first.getColor(), second.getColor() );
+        assertEquals( first.getColor(), second.getColor() );
-        Assert.assertEquals( first.getClickEvent(), second.getClickEvent() );
+        assertEquals( first.getClickEvent(), second.getClickEvent() );
-        Assert.assertEquals( first.getHoverEvent(), second.getHoverEvent() );
+        assertEquals( first.getHoverEvent(), second.getHoverEvent() );
     }
 
     @Test
@@ -368,7 +368,7 @@ public class ComponentsTest
         ComponentBuilder builder = new ComponentBuilder( "Hello " ).color( ChatColor.RED ).append( "world" ).color( ChatColor.DARK_RED );
         ComponentBuilder cloned = new ComponentBuilder( builder );
 
-        Assert.assertEquals( legacyTextFunction.apply( builder ), legacyTextFunction.apply( cloned ) );
+        assertEquals( legacyTextFunction.apply( builder ), legacyTextFunction.apply( cloned ) );
     }
 
     @Test
@@ -403,10 +403,10 @@ public class ComponentsTest
         ScoreComponent scoreComponent = new ScoreComponent( "myscore", "myobjective" );
         builder.append( scoreComponent ); // non array based BaseComponent append
         T component = componentBuilder.apply( builder );
-        Assert.assertEquals( "Hello ", extraGetter.apply( component, 0 ).toPlainText() );
+        assertEquals( "Hello ", extraGetter.apply( component, 0 ).toPlainText() );
-        Assert.assertEquals( textComponent.toPlainText(), extraGetter.apply( component, 1 ).toPlainText() );
+        assertEquals( textComponent.toPlainText(), extraGetter.apply( component, 1 ).toPlainText() );
-        Assert.assertEquals( translatableComponent.toPlainText(), extraGetter.apply( component, 2 ).toPlainText() );
+        assertEquals( translatableComponent.toPlainText(), extraGetter.apply( component, 2 ).toPlainText() );
-        Assert.assertEquals( scoreComponent.toPlainText(), extraGetter.apply( component, 3 ).toPlainText() );
+        assertEquals( scoreComponent.toPlainText(), extraGetter.apply( component, 3 ).toPlainText() );
     }
 
     @Test
@@ -416,7 +416,7 @@ public class ComponentsTest
         String text = ComponentSerializer.toString( component );
         BaseComponent[] reparsed = ComponentSerializer.parse( text );
 
-        Assert.assertArrayEquals( component, reparsed );
+        assertArrayEquals( component, reparsed );
     }
 
     @Test
@@ -456,10 +456,10 @@ public class ComponentsTest
 
         T component = componentBuilder.apply( builder );
 
-        Assert.assertEquals( extraGetter.apply( component, 1 ).getHoverEvent(), hoverEvent );
+        assertEquals( extraGetter.apply( component, 1 ).getHoverEvent(), hoverEvent );
-        Assert.assertEquals( extraGetter.apply( component, 1 ).getClickEvent(), clickEvent );
+        assertEquals( extraGetter.apply( component, 1 ).getClickEvent(), clickEvent );
-        Assert.assertEquals( "Hello world!", toPlainTextFunction.apply( component ) );
+        assertEquals( "Hello world!", toPlainTextFunction.apply( component ) );
-        Assert.assertEquals( expectedLegacyText, toLegacyTextFunction.apply( component ) );
+        assertEquals( expectedLegacyText, toLegacyTextFunction.apply( component ) );
     }
 
     @Test
@@ -492,8 +492,8 @@ public class ComponentsTest
 
         T component = componentBuilder.apply( builder );
 
-        Assert.assertEquals( "Hello world!", toPlainTextFunction.apply( component ) );
+        assertEquals( "Hello world!", toPlainTextFunction.apply( component ) );
-        Assert.assertEquals( expectedLegacyString, toLegacyTextFunction.apply( component ) );
+        assertEquals( expectedLegacyString, toLegacyTextFunction.apply( component ) );
     }
 
     @Test
@@ -502,8 +502,8 @@ public class ComponentsTest
         TextComponent textComponent = new TextComponent( "Hello world" );
         textComponent.setColor( ChatColor.RED );
 
-        Assert.assertEquals( "Hello world", textComponent.toPlainText() );
+        assertEquals( "Hello world", textComponent.toPlainText() );
-        Assert.assertEquals( ChatColor.RED + "Hello world", textComponent.toLegacyText() );
+        assertEquals( ChatColor.RED + "Hello world", textComponent.toLegacyText() );
     }
 
     @Test
@@ -511,25 +511,25 @@ public class ComponentsTest
     {
         BaseComponent[] test1 = TextComponent.fromLegacyText( ChatColor.AQUA + "Aqua " + ChatColor.RED + ChatColor.BOLD + "RedBold" );
 
-        Assert.assertEquals( "Aqua RedBold", BaseComponent.toPlainText( test1 ) );
+        assertEquals( "Aqua RedBold", BaseComponent.toPlainText( test1 ) );
-        Assert.assertEquals( ChatColor.AQUA + "Aqua " + ChatColor.RED + ChatColor.BOLD + "RedBold", BaseComponent.toLegacyText( test1 ) );
+        assertEquals( ChatColor.AQUA + "Aqua " + ChatColor.RED + ChatColor.BOLD + "RedBold", BaseComponent.toLegacyText( test1 ) );
 
         BaseComponent[] test2 = TextComponent.fromLegacyText( "Text http://spigotmc.org " + ChatColor.GREEN + "google.com/test" );
 
-        Assert.assertEquals( "Text http://spigotmc.org google.com/test", BaseComponent.toPlainText( test2 ) );
+        assertEquals( "Text http://spigotmc.org google.com/test", BaseComponent.toPlainText( test2 ) );
         //The extra ChatColor instances are sometimes inserted when not needed but it doesn't change the result
-        Assert.assertEquals( ChatColor.WHITE + "Text " + ChatColor.WHITE + "http://spigotmc.org" + ChatColor.WHITE
+        assertEquals( ChatColor.WHITE + "Text " + ChatColor.WHITE + "http://spigotmc.org" + ChatColor.WHITE
                 + " " + ChatColor.GREEN + "google.com/test" + ChatColor.GREEN, BaseComponent.toLegacyText( test2 ) );
 
         ClickEvent url1 = test2[1].getClickEvent();
-        Assert.assertNotNull( url1 );
+        assertNotNull( url1 );
-        Assert.assertTrue( url1.getAction() == ClickEvent.Action.OPEN_URL );
+        assertTrue( url1.getAction() == ClickEvent.Action.OPEN_URL );
-        Assert.assertEquals( "http://spigotmc.org", url1.getValue() );
+        assertEquals( "http://spigotmc.org", url1.getValue() );
 
         ClickEvent url2 = test2[3].getClickEvent();
-        Assert.assertNotNull( url2 );
+        assertNotNull( url2 );
-        Assert.assertTrue( url2.getAction() == ClickEvent.Action.OPEN_URL );
+        assertTrue( url2.getAction() == ClickEvent.Action.OPEN_URL );
-        Assert.assertEquals( "http://google.com/test", url2.getValue() );
+        assertEquals( "http://google.com/test", url2.getValue() );
     }
 
     @Test
@@ -541,18 +541,18 @@ public class ComponentsTest
                 item, "5",
                 "thinkofdeath" );
 
-        Assert.assertEquals( "Given Golden Sword * 5 to thinkofdeath", translatableComponent.toPlainText() );
+        assertEquals( "Given Golden Sword * 5 to thinkofdeath", translatableComponent.toPlainText() );
-        Assert.assertEquals( ChatColor.WHITE + "Given " + ChatColor.AQUA + "Golden Sword" + ChatColor.WHITE
+        assertEquals( ChatColor.WHITE + "Given " + ChatColor.AQUA + "Golden Sword" + ChatColor.WHITE
                 + " * " + ChatColor.WHITE + "5" + ChatColor.WHITE + " to " + ChatColor.WHITE + "thinkofdeath",
                 translatableComponent.toLegacyText() );
 
         TranslatableComponent positional = new TranslatableComponent( "book.pageIndicator", "5", "50" );
 
-        Assert.assertEquals( "Page 5 of 50", positional.toPlainText() );
+        assertEquals( "Page 5 of 50", positional.toPlainText() );
-        Assert.assertEquals( ChatColor.WHITE + "Page " + ChatColor.WHITE + "5" + ChatColor.WHITE + " of " + ChatColor.WHITE + "50", positional.toLegacyText() );
+        assertEquals( ChatColor.WHITE + "Page " + ChatColor.WHITE + "5" + ChatColor.WHITE + " of " + ChatColor.WHITE + "50", positional.toLegacyText() );
 
         TranslatableComponent one_four_two = new TranslatableComponent( "filled_map.buried_treasure" );
-        Assert.assertEquals( "Buried Treasure Map", one_four_two.toPlainText() );
+        assertEquals( "Buried Treasure Map", one_four_two.toPlainText() );
     }
 
     @Test
@@ -586,8 +586,8 @@ public class ComponentsTest
                 append( "World" ).bold( true ).color( ChatColor.BLUE ).
                 append( "!" ).color( ChatColor.YELLOW ) );
 
-        Assert.assertEquals( "Hello World!", toPlainTextFunction.apply( component ) );
+        assertEquals( "Hello World!", toPlainTextFunction.apply( component ) );
-        Assert.assertEquals( expectedLegacyString, toLegacyTextFunction.apply( component ) );
+        assertEquals( expectedLegacyString, toLegacyTextFunction.apply( component ) );
     }
 
     @Test
@@ -613,8 +613,8 @@ public class ComponentsTest
         T component = componentBuilder.apply( new ComponentBuilder( "Hello " ).color( ChatColor.RED )
                 .append( "World" ).reset() );
 
-        Assert.assertEquals( ChatColor.RED, extraGetter.apply( component, 0 ).getColor() );
+        assertEquals( ChatColor.RED, extraGetter.apply( component, 0 ).getColor() );
-        Assert.assertEquals( ChatColor.WHITE, extraGetter.apply( component, 1 ).getColor() );
+        assertEquals( ChatColor.WHITE, extraGetter.apply( component, 1 ).getColor() );
     }
 
     @Test
@@ -640,41 +640,41 @@ public class ComponentsTest
         T noneRetention = componentBuilder.apply( new ComponentBuilder( "Hello " ).color( ChatColor.RED )
                 .append( "World", ComponentBuilder.FormatRetention.NONE ) );
 
-        Assert.assertEquals( ChatColor.RED, extraGetter.apply( noneRetention, 0 ).getColor() );
+        assertEquals( ChatColor.RED, extraGetter.apply( noneRetention, 0 ).getColor() );
-        Assert.assertEquals( ChatColor.WHITE, extraGetter.apply( noneRetention, 1 ).getColor() );
+        assertEquals( ChatColor.WHITE, extraGetter.apply( noneRetention, 1 ).getColor() );
 
         HoverEvent testEvent = new HoverEvent( HoverEvent.Action.SHOW_TEXT, new Text( new ComponentBuilder( "test" ).build() ) );
 
         T formattingRetention = componentBuilder.apply( new ComponentBuilder( "Hello " ).color( ChatColor.RED )
                 .event( testEvent ).append( "World", ComponentBuilder.FormatRetention.FORMATTING ) );
 
-        Assert.assertEquals( ChatColor.RED, extraGetter.apply( formattingRetention, 0 ).getColor() );
+        assertEquals( ChatColor.RED, extraGetter.apply( formattingRetention, 0 ).getColor() );
-        Assert.assertEquals( testEvent, extraGetter.apply( formattingRetention, 0 ).getHoverEvent() );
+        assertEquals( testEvent, extraGetter.apply( formattingRetention, 0 ).getHoverEvent() );
-        Assert.assertEquals( ChatColor.RED, extraGetter.apply( formattingRetention, 1 ).getColor() );
+        assertEquals( ChatColor.RED, extraGetter.apply( formattingRetention, 1 ).getColor() );
-        Assert.assertNull( extraGetter.apply( formattingRetention, 1 ).getHoverEvent() );
+        assertNull( extraGetter.apply( formattingRetention, 1 ).getHoverEvent() );
 
         ClickEvent testClickEvent = new ClickEvent( ClickEvent.Action.OPEN_URL, "http://www.example.com" );
 
         T eventRetention = componentBuilder.apply( new ComponentBuilder( "Hello " ).color( ChatColor.RED )
                 .event( testEvent ).event( testClickEvent ).append( "World", ComponentBuilder.FormatRetention.EVENTS ) );
 
-        Assert.assertEquals( ChatColor.RED, extraGetter.apply( eventRetention, 0 ).getColor() );
+        assertEquals( ChatColor.RED, extraGetter.apply( eventRetention, 0 ).getColor() );
-        Assert.assertEquals( testEvent, extraGetter.apply( eventRetention, 0 ).getHoverEvent() );
+        assertEquals( testEvent, extraGetter.apply( eventRetention, 0 ).getHoverEvent() );
-        Assert.assertEquals( testClickEvent, extraGetter.apply( eventRetention, 0 ).getClickEvent() );
+        assertEquals( testClickEvent, extraGetter.apply( eventRetention, 0 ).getClickEvent() );
-        Assert.assertEquals( ChatColor.WHITE, extraGetter.apply( eventRetention, 1 ).getColor() );
+        assertEquals( ChatColor.WHITE, extraGetter.apply( eventRetention, 1 ).getColor() );
-        Assert.assertEquals( testEvent, extraGetter.apply( eventRetention, 1 ).getHoverEvent() );
+        assertEquals( testEvent, extraGetter.apply( eventRetention, 1 ).getHoverEvent() );
-        Assert.assertEquals( testClickEvent, extraGetter.apply( eventRetention, 1 ).getClickEvent() );
+        assertEquals( testClickEvent, extraGetter.apply( eventRetention, 1 ).getClickEvent() );
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test
     public void testLoopSimple()
     {
         TextComponent component = new TextComponent( "Testing" );
         component.addExtra( component );
-        ComponentSerializer.toString( component );
+        assertThrows( IllegalArgumentException.class, () -> ComponentSerializer.toString( component ) );
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test
     public void testLoopComplex()
     {
         TextComponent a = new TextComponent( "A" );
@@ -685,7 +685,7 @@ public class ComponentsTest
         a.addExtra( b );
         b.addExtra( c );
         c.addExtra( a );
-        ComponentSerializer.toString( a );
+        assertThrows( IllegalArgumentException.class, () -> ComponentSerializer.toString( a ) );
     }
 
     @Test
@@ -699,7 +699,7 @@ public class ComponentsTest
         ComponentSerializer.toString( a );
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test
     public void testRepeatedError()
     {
         TextComponent a = new TextComponent( "A" );
@@ -711,7 +711,7 @@ public class ComponentsTest
         a.addExtra( c );
         c.addExtra( a );
         a.addExtra( b );
-        ComponentSerializer.toString( a );
+        assertThrows( IllegalArgumentException.class, () -> ComponentSerializer.toString( a ) );
     }
 
     @Test
@@ -736,7 +736,7 @@ public class ComponentsTest
         String emptyLegacyText = fromAndToLegacyText( "" );
 
         // all invalid color codes and the trailing '§' should be ignored
-        Assert.assertEquals( emptyLegacyText, invalidColorCodesLegacyText );
+        assertEquals( emptyLegacyText, invalidColorCodesLegacyText );
     }
 
     @Test
@@ -745,12 +745,12 @@ public class ComponentsTest
         String text = "§a";
 
         BaseComponent[] converted = TextComponent.fromLegacyText( text );
-        Assert.assertEquals( ChatColor.GREEN, converted[0].getColor() );
+        assertEquals( ChatColor.GREEN, converted[0].getColor() );
 
         String roundtripLegacyText = BaseComponent.toLegacyText( converted );
 
         // color code should not be lost during conversion
-        Assert.assertEquals( text, roundtripLegacyText );
+        assertEquals( text, roundtripLegacyText );
     }
 
     @Test
@@ -762,7 +762,7 @@ public class ComponentsTest
         TextComponent second = new TextComponent( "Hello, " );
         second.addExtra( new TextComponent( "World!" ) );
 
-        Assert.assertEquals( first, second );
+        assertEquals( first, second );
     }
 
     @Test
@@ -774,7 +774,7 @@ public class ComponentsTest
         TextComponent second = new TextComponent( "Hello, " );
         second.addExtra( new TextComponent( "World!" ) );
 
-        Assert.assertNotEquals( first, second );
+        assertNotEquals( first, second );
     }
 
     @Test
@@ -785,7 +785,7 @@ public class ComponentsTest
 
         BaseComponent[] reColored = TextComponent.fromLegacyText( legacy );
 
-        Assert.assertArrayEquals( hexColored, reColored );
+        assertArrayEquals( hexColored, reColored );
     }
 
     @Test
@@ -817,18 +817,18 @@ public class ComponentsTest
 
         String expected = "{\"extra\":[{\"underlined\":true,\"color\":\"dark_red\",\"text\":\"44444\"},{\"color\":"
                 + "\"white\",\"text\":\"dd\"},{\"bold\":true,\"color\":\"gold\",\"text\":\"6666\"}],\"text\":\"\"}";
-        Assert.assertEquals( expected, ComponentSerializer.toString( a ) );
+        assertEquals( expected, ComponentSerializer.toString( a ) );
 
         builder.append( a );
 
         String test1 = componentSerializer.apply( componentBuilder.apply( builder ) );
-        Assert.assertEquals( expected, test1 );
+        assertEquals( expected, test1 );
 
         BaseComponent[] b = TextComponent.fromLegacyText( "§rrrrr" );
         builder.append( b );
 
         String test2 = componentSerializer.apply( componentBuilder.apply( builder ) );
-        Assert.assertEquals(
+        assertEquals(
                 "{\"extra\":[{\"underlined\":true,\"color\":\"dark_red\",\"text\":\"44444\"},"
                         + "{\"color\":\"white\",\"text\":\"dd\"},{\"bold\":true,\"color\":\"gold\",\"text\":\"6666\"},"
                         + "{\"color\":\"white\",\"text\":\"rrrr\"}],\"text\":\"\"}",

chat/src/test/java/net/md_5/bungee/api/chat/TranslatableComponentTest.java

@@ -1,8 +1,8 @@
 package net.md_5.bungee.api.chat;
 
+import static org.junit.jupiter.api.Assertions.*;
 import net.md_5.bungee.chat.ComponentSerializer;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class TranslatableComponentTest
 {
@@ -11,8 +11,8 @@ public class TranslatableComponentTest
     public void testMissingPlaceholdersAdded()
     {
         TranslatableComponent testComponent = new TranslatableComponent( "Test string with %s placeholders: %s", 2, "aoeu" );
-        Assert.assertEquals( "Test string with 2 placeholders: aoeu", testComponent.toPlainText() );
+        assertEquals( "Test string with 2 placeholders: aoeu", testComponent.toPlainText() );
-        Assert.assertEquals( "§fTest string with §f2§f placeholders: §faoeu", testComponent.toLegacyText() );
+        assertEquals( "§fTest string with §f2§f placeholders: §faoeu", testComponent.toLegacyText() );
     }
 
     @Test
@@ -22,7 +22,7 @@ public class TranslatableComponentTest
         String jsonString = ComponentSerializer.toString( testComponent );
         BaseComponent[] baseComponents = ComponentSerializer.parse( jsonString );
 
-        Assert.assertEquals( "Test string with a placeholder", TextComponent.toPlainText( baseComponents ) );
+        assertEquals( "Test string with a placeholder", TextComponent.toPlainText( baseComponents ) );
-        Assert.assertEquals( "§fTest string with §fa§f placeholder", TextComponent.toLegacyText( baseComponents ) );
+        assertEquals( "§fTest string with §fa§f placeholder", TextComponent.toLegacyText( baseComponents ) );
     }
 }

checkstyle.xml

@@ -36,7 +36,6 @@
         <module name="SuppressWarningsHolder"/>
 
         <!-- See http://checkstyle.sourceforge.net/config_imports.html -->
-        <module name="AvoidStarImport"/>
         <module name="ImportOrder">
             <property name="option" value="above"/>
             <property name="ordered" value="true"/>

config/src/test/java/net/md_5/bungee/config/CompoundConfigurationTest.java

@@ -1,30 +1,25 @@
 package net.md_5.bungee.config;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.io.StringReader;
 import java.io.StringWriter;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Stream;
 import lombok.RequiredArgsConstructor;
-import org.junit.Assert;
+import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.Test;
+import org.junit.jupiter.params.provider.Arguments;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.params.provider.MethodSource;
-import org.junit.runners.Parameterized;
-import org.junit.runners.Parameterized.Parameters;
 
 @RequiredArgsConstructor
-@RunWith(Parameterized.class)
 public class CompoundConfigurationTest
 {
 
-    @Parameters(name = "{0}")
+    public static Stream<Arguments> data()
-    public static Iterable<Object[]> data()
-    {
-        // CHECKSTYLE:OFF
-        return Arrays.asList( new Object[][]
-        {
     {
+        return Stream.of(
+                Arguments.of(
                         // provider
                         YamlConfiguration.class,
                         // testDocument
@@ -73,8 +68,8 @@ public class CompoundConfigurationTest
                         + "null:\n"
                         + "    null: object\n"
                         + "    object: null\n"
-            },
+                ),
-            {
+                Arguments.of(
                         // provider
                         JsonConfiguration.class,
                         // testDocument
@@ -131,18 +126,13 @@ public class CompoundConfigurationTest
                         + "    \"object\": null\n"
                         + "  }\n"
                         + "}"
+                )
+        );
     }
-        } );
-        // CHECKSTYLE:ON
-    }
-    //
-    private final Class<? extends ConfigurationProvider> provider;
-    private final String testDocument;
-    private final String numberTest;
-    private final String nullTest;
 
-    @Test
+    @ParameterizedTest
-    public void testConfig() throws Exception
+    @MethodSource("data")
+    public void testConfig(Class<? extends ConfigurationProvider> provider, String testDocument, String numberTest, String nullTest) throws Exception
     {
         Configuration conf = ConfigurationProvider.getProvider( provider ).load( testDocument );
         testSection( conf );
@@ -151,7 +141,7 @@ public class CompoundConfigurationTest
         ConfigurationProvider.getProvider( provider ).save( conf, sw );
 
         // Check nulls were saved, see #1094
-        Assert.assertFalse( "Config contains null", sw.toString().contains( "null" ) );
+        assertFalse( sw.toString().contains( "null" ), "Config contains null" );
 
         conf = ConfigurationProvider.getProvider( provider ).load( new StringReader( sw.toString() ) );
         conf.set( "receipt", "Oz-Ware Purchase Invoice" ); // Add it back
@@ -160,37 +150,38 @@ public class CompoundConfigurationTest
 
     private void testSection(Configuration conf)
     {
-        Assert.assertEquals( "receipt", "Oz-Ware Purchase Invoice", conf.getString( "receipt" ) );
+        assertEquals( "Oz-Ware Purchase Invoice", conf.getString( "receipt" ), "receipt" );
-        // Assert.assertEquals( "date", "2012-08-06", conf.get( "date" ).toString() );
+        // assertEquals( "2012-08-06", conf.get( "date" ).toString(), "date" );
 
         Configuration customer = conf.getSection( "customer" );
-        Assert.assertEquals( "customer.given", "Dorothy", customer.getString( "given" ) );
+        assertEquals( "Dorothy", customer.getString( "given" ), "customer.given" );
-        Assert.assertEquals( "customer.given", "Dorothy", conf.getString( "customer.given" ) );
+        assertEquals( "Dorothy", conf.getString( "customer.given" ), "customer.given" );
 
         List items = conf.getList( "items" );
         Map item = (Map) items.get( 0 );
-        Assert.assertEquals( "items[0].part_no", "A4786", item.get( "part_no" ) );
+        assertEquals( "A4786", item.get( "part_no" ), "items[0].part_no" );
 
         conf.set( "receipt", null );
-        Assert.assertEquals( null, conf.get( "receipt" ) );
+        assertEquals( null, conf.get( "receipt" ) );
-        Assert.assertEquals( "foo", conf.get( "receipt", "foo" ) );
+        assertEquals( "foo", conf.get( "receipt", "foo" ) );
 
         Configuration newSection = conf.getSection( "new.section" );
         newSection.set( "value", "foo" );
-        Assert.assertEquals( "foo", conf.get( "new.section.value" ) );
+        assertEquals( "foo", conf.get( "new.section.value" ) );
 
         conf.set( "other.new.section", "bar" );
-        Assert.assertEquals( "bar", conf.get( "other.new.section" ) );
+        assertEquals( "bar", conf.get( "other.new.section" ) );
 
-        Assert.assertTrue( conf.contains( "customer.given" ) );
+        assertTrue( conf.contains( "customer.given" ) );
-        Assert.assertTrue( customer.contains( "given" ) );
+        assertTrue( customer.contains( "given" ) );
 
-        Assert.assertFalse( conf.contains( "customer.foo" ) );
+        assertFalse( conf.contains( "customer.foo" ) );
-        Assert.assertFalse( customer.contains( "foo" ) );
+        assertFalse( customer.contains( "foo" ) );
     }
 
-    @Test
+    @ParameterizedTest
-    public void testNumberedKeys()
+    @MethodSource("data")
+    public void testNumberedKeys(Class<? extends ConfigurationProvider> provider, String testDocument, String numberTest, String nullTest)
     {
         Configuration conf = ConfigurationProvider.getProvider( provider ).load( numberTest );
 
@@ -201,29 +192,31 @@ public class CompoundConfigurationTest
         }
     }
 
-    @Test
+    @ParameterizedTest
-    public void testNull()
+    @MethodSource("data")
+    public void testNull(Class<? extends ConfigurationProvider> provider, String testDocument, String numberTest, String nullTest)
     {
         Configuration conf = ConfigurationProvider.getProvider( provider ).load( nullTest );
 
-        Assert.assertEquals( "object", conf.get( "null.null" ) );
+        assertEquals( "object", conf.get( "null.null" ) );
-        Assert.assertEquals( "object", conf.getSection( "null" ).get( "null" ) );
+        assertEquals( "object", conf.getSection( "null" ).get( "null" ) );
 
-        Assert.assertEquals( null, conf.get( "null.object" ) );
+        assertEquals( null, conf.get( "null.object" ) );
-        Assert.assertEquals( "", conf.getString( "null.object" ) );
+        assertEquals( "", conf.getString( "null.object" ) );
     }
 
-    @Test
+    @ParameterizedTest
-    public void testMapAddition()
+    @MethodSource("data")
+    public void testMapAddition(Class<? extends ConfigurationProvider> provider, String testDocument, String numberTest, String nullTest)
     {
         Configuration conf = ConfigurationProvider.getProvider( provider ).load( testDocument );
 
         conf.set( "addition", Collections.singletonMap( "foo", "bar" ) );
 
         // Order matters
-        Assert.assertEquals( "bar", conf.getSection( "addition" ).getString( "foo" ) );
+        assertEquals( "bar", conf.getSection( "addition" ).getString( "foo" ) );
-        Assert.assertEquals( "bar", conf.getString( "addition.foo" ) );
+        assertEquals( "bar", conf.getString( "addition.foo" ) );
 
-        Assert.assertTrue( conf.get( "addition" ) instanceof Configuration );
+        assertTrue( conf.get( "addition" ) instanceof Configuration );
     }
 }

config/src/test/java/net/md_5/bungee/config/DefaultConfigurationTest.java

@@ -1,7 +1,7 @@
 package net.md_5.bungee.config;
 
-import org.junit.Assert;
+import static org.junit.jupiter.api.Assertions.*;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class DefaultConfigurationTest
 {
@@ -16,8 +16,8 @@ public class DefaultConfigurationTest
 
         Configuration actualConfig = new Configuration( defaultConfig );
 
-        Assert.assertEquals( 10, actualConfig.getInt( "setting" ) );
+        assertEquals( 10, actualConfig.getInt( "setting" ) );
-        Assert.assertEquals( 11, actualConfig.getInt( "nested.setting" ) );
+        assertEquals( 11, actualConfig.getInt( "nested.setting" ) );
-        Assert.assertEquals( 12, actualConfig.getInt( "double.nested.setting" ) );
+        assertEquals( 12, actualConfig.getInt( "double.nested.setting" ) );
     }
 }

event/src/test/java/net/md_5/bungee/event/EventBusTest.java

@@ -1,8 +1,8 @@
 package net.md_5.bungee.event;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.util.concurrent.CountDownLatch;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class EventBusTest
 {
@@ -15,14 +15,14 @@ public class EventBusTest
     {
         bus.register( this );
         bus.post( new FirstEvent() );
-        Assert.assertEquals( 0, latch.getCount() );
+        assertEquals( 0, latch.getCount() );
     }
 
     @EventHandler
     public void firstListener(FirstEvent event)
     {
         bus.post( new SecondEvent() );
-        Assert.assertEquals( 1, latch.getCount() );
+        assertEquals( 1, latch.getCount() );
         latch.countDown();
     }
 

event/src/test/java/net/md_5/bungee/event/EventPriorityTest.java

@@ -1,8 +1,8 @@
 package net.md_5.bungee.event;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.util.concurrent.CountDownLatch;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class EventPriorityTest
 {
@@ -16,41 +16,41 @@ public class EventPriorityTest
         bus.register( this );
         bus.register( new EventPriorityListenerPartner() );
         bus.post( new PriorityTestEvent() );
-        Assert.assertEquals( 0, latch.getCount() );
+        assertEquals( 0, latch.getCount() );
     }
 
     @EventHandler(priority = Byte.MIN_VALUE)
     public void onMinPriority(PriorityTestEvent event)
     {
-        Assert.assertEquals( 7, latch.getCount() );
+        assertEquals( 7, latch.getCount() );
         latch.countDown();
     }
 
     @EventHandler(priority = EventPriority.LOWEST)
     public void onLowestPriority(PriorityTestEvent event)
     {
-        Assert.assertEquals( 6, latch.getCount() );
+        assertEquals( 6, latch.getCount() );
         latch.countDown();
     }
 
     @EventHandler
     public void onNormalPriority(PriorityTestEvent event)
     {
-        Assert.assertEquals( 4, latch.getCount() );
+        assertEquals( 4, latch.getCount() );
         latch.countDown();
     }
 
     @EventHandler(priority = EventPriority.HIGHEST)
     public void onHighestPriority(PriorityTestEvent event)
     {
-        Assert.assertEquals( 2, latch.getCount() );
+        assertEquals( 2, latch.getCount() );
         latch.countDown();
     }
 
     @EventHandler(priority = Byte.MAX_VALUE)
     public void onMaxPriority(PriorityTestEvent event)
     {
-        Assert.assertEquals( 1, latch.getCount() );
+        assertEquals( 1, latch.getCount() );
         latch.countDown();
     }
 
@@ -64,14 +64,14 @@ public class EventPriorityTest
         @EventHandler(priority = EventPriority.HIGH)
         public void onHighPriority(PriorityTestEvent event)
         {
-            Assert.assertEquals( 3, latch.getCount() );
+            assertEquals( 3, latch.getCount() );
             latch.countDown();
         }
 
         @EventHandler(priority = EventPriority.LOW)
         public void onLowPriority(PriorityTestEvent event)
         {
-            Assert.assertEquals( 5, latch.getCount() );
+            assertEquals( 5, latch.getCount() );
             latch.countDown();
         }
     }

event/src/test/java/net/md_5/bungee/event/SubclassTest.java

@@ -1,8 +1,8 @@
 package net.md_5.bungee.event;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.util.concurrent.CountDownLatch;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class SubclassTest extends EventBusTest
 {
@@ -14,13 +14,13 @@ public class SubclassTest extends EventBusTest
     public void testNestedEvents()
     {
         super.testNestedEvents();
-        Assert.assertEquals( 0, latch.getCount() );
+        assertEquals( 0, latch.getCount() );
     }
 
     @EventHandler
     protected void extraListener(FirstEvent event)
     {
-        Assert.assertEquals( 1, latch.getCount() );
+        assertEquals( 1, latch.getCount() );
         latch.countDown();
     }
 }

event/src/test/java/net/md_5/bungee/event/UnregisteringListenerTest.java

@@ -1,7 +1,7 @@
 package net.md_5.bungee.event;
 
-import org.junit.Assert;
+import static org.junit.jupiter.api.Assertions.fail;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class UnregisteringListenerTest
 {
@@ -19,7 +19,7 @@ public class UnregisteringListenerTest
     @EventHandler
     public void onEvent(TestEvent evt)
     {
-        Assert.fail( "Event listener wasn't unregistered" );
+        fail( "Event listener wasn't unregistered" );
     }
 
     public static class TestEvent

native/src/test/java/net/md_5/bungee/NativeCipherTest.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee;
 
+import static org.junit.jupiter.api.Assertions.*;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import java.util.Random;
@@ -9,12 +10,11 @@ import net.md_5.bungee.jni.NativeCode;
 import net.md_5.bungee.jni.cipher.BungeeCipher;
 import net.md_5.bungee.jni.cipher.JavaCipher;
 import net.md_5.bungee.jni.cipher.NativeCipher;
-import org.junit.Assert;
+import org.junit.jupiter.api.MethodOrderer;
-import org.junit.FixMethodOrder;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
+import org.junit.jupiter.api.TestMethodOrder;
-import org.junit.runners.MethodSorters;
 
-@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+@TestMethodOrder(MethodOrderer.MethodName.class)
 public class NativeCipherTest
 {
 
@@ -34,7 +34,7 @@ public class NativeCipherTest
         if ( NativeCode.isSupported() )
         {
             boolean loaded = factory.load();
-            Assert.assertTrue( "Native cipher failed to load!", loaded );
+            assertTrue( loaded, "Native cipher failed to load!" );
 
             NativeCipher cipher = new NativeCipher();
             System.out.println( "Testing native cipher..." );
@@ -48,7 +48,7 @@ public class NativeCipherTest
         if ( NativeCode.isSupported() )
         {
             boolean loaded = factory.load();
-            Assert.assertTrue( "Native cipher failed to load!", loaded );
+            assertTrue( loaded, "Native cipher failed to load!" );
 
             NativeCipher cipher = new NativeCipher();
 
@@ -98,7 +98,7 @@ public class NativeCipherTest
         // Encrypt
         cipher.init( true, secret );
         cipher.cipher( nativePlain, out );
-        Assert.assertEquals( nativeCiphered, out );
+        assertEquals( nativeCiphered, out );
 
         out.clear();
 
@@ -106,7 +106,7 @@ public class NativeCipherTest
         cipher.init( false, secret );
         cipher.cipher( nativeCiphered, out );
         nativePlain.resetReaderIndex();
-        Assert.assertEquals( nativePlain, out );
+        assertEquals( nativePlain, out );
 
         System.out.println( "This cipher works correctly!" );
     }

native/src/test/java/net/md_5/bungee/NativeZlibTest.java

@@ -1,5 +1,6 @@
 package net.md_5.bungee;
 
+import static org.junit.jupiter.api.Assertions.*;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import java.util.Arrays;
@@ -9,8 +10,7 @@ import net.md_5.bungee.jni.NativeCode;
 import net.md_5.bungee.jni.zlib.BungeeZlib;
 import net.md_5.bungee.jni.zlib.JavaZlib;
 import net.md_5.bungee.jni.zlib.NativeZlib;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class NativeZlibTest
 {
@@ -22,7 +22,7 @@ public class NativeZlibTest
     {
         if ( NativeCode.isSupported() )
         {
-            Assert.assertTrue( "Native code failed to load!", factory.load() );
+            assertTrue( factory.load(), "Native code failed to load!" );
             test( factory.newInstance() );
         }
         test( new JavaZlib() );
@@ -64,6 +64,6 @@ public class NativeZlibTest
         long elapsed = System.currentTimeMillis() - start;
         System.out.println( "Took: " + elapsed + "ms" );
 
-        Assert.assertTrue( "Results do not match", Arrays.equals( dataBuf, check ) );
+        assertTrue( Arrays.equals( dataBuf, check ), "Results do not match" );
     }
 }

pom.xml

@@ -90,9 +90,9 @@
     </dependencyManagement>
     <dependencies>
         <dependency>
-            <groupId>junit</groupId>
+            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit</artifactId>
+            <artifactId>junit-jupiter</artifactId>
-            <version>4.13.2</version>
+            <version>5.10.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>

protocol/src/main/java/net/md_5/bungee/protocol/MinecraftEncoder.java

@@ -15,6 +15,7 @@ public class MinecraftEncoder extends MessageToByteEncoder<DefinedPacket>
     @Setter
     private Protocol protocol;
     private boolean server;
+    @Getter
     @Setter
     private int protocolVersion;
 

protocol/src/main/java/net/md_5/bungee/protocol/Protocol.java

@@ -658,8 +658,8 @@ public enum Protocol
     /*========================================================================*/
     public static final int MAX_PACKET_ID = 0xFF;
     /*========================================================================*/
-    final DirectionData TO_SERVER = new DirectionData( this, ProtocolConstants.Direction.TO_SERVER );
+    public final DirectionData TO_SERVER = new DirectionData( this, ProtocolConstants.Direction.TO_SERVER );
-    final DirectionData TO_CLIENT = new DirectionData( this, ProtocolConstants.Direction.TO_CLIENT );
+    public final DirectionData TO_CLIENT = new DirectionData( this, ProtocolConstants.Direction.TO_CLIENT );
 
     public static void main(String[] args)
     {
@@ -719,7 +719,7 @@ public enum Protocol
         return new ProtocolMapping( protocol, id );
     }
 
-    static final class DirectionData
+    public static final class DirectionData
     {
 
         private final TIntObjectMap<ProtocolData> protocols = new TIntObjectHashMap<>();
@@ -802,6 +802,17 @@ public enum Protocol
             }
         }
 
+        public boolean hasPacket(Class<? extends DefinedPacket> packet, int version)
+        {
+            ProtocolData protocolData = getProtocolData( version );
+            if ( protocolData == null )
+            {
+                throw new BadPacketException( "Unsupported protocol version" );
+            }
+
+            return protocolData.packetMap.containsKey( packet );
+        }
+
         final int getId(Class<? extends DefinedPacket> packet, int version)
         {
 

protocol/src/test/java/net/md_5/bungee/protocol/packet/PluginMessageTest.java

@@ -1,7 +1,7 @@
 package net.md_5.bungee.protocol.packet;
 
-import org.junit.Assert;
+import static org.junit.jupiter.api.Assertions.*;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class PluginMessageTest
 {
@@ -9,9 +9,9 @@ public class PluginMessageTest
     @Test
     public void testModerniseChannel()
     {
-        Assert.assertEquals( "bungeecord:main", PluginMessage.MODERNISE.apply( "BungeeCord" ) );
+        assertEquals( "bungeecord:main", PluginMessage.MODERNISE.apply( "BungeeCord" ) );
-        Assert.assertEquals( "BungeeCord", PluginMessage.MODERNISE.apply( "bungeecord:main" ) );
+        assertEquals( "BungeeCord", PluginMessage.MODERNISE.apply( "bungeecord:main" ) );
-        Assert.assertEquals( "legacy:foo", PluginMessage.MODERNISE.apply( "FoO" ) );
+        assertEquals( "legacy:foo", PluginMessage.MODERNISE.apply( "FoO" ) );
-        Assert.assertEquals( "foo:bar", PluginMessage.MODERNISE.apply( "foo:bar" ) );
+        assertEquals( "foo:bar", PluginMessage.MODERNISE.apply( "foo:bar" ) );
     }
 }

proxy/src/main/java/net/md_5/bungee/ServerConnection.java

@@ -5,6 +5,7 @@ import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.util.ArrayDeque;
 import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
 import lombok.Data;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
@@ -13,6 +14,7 @@ import net.md_5.bungee.api.chat.BaseComponent;
 import net.md_5.bungee.api.connection.Server;
 import net.md_5.bungee.netty.ChannelWrapper;
 import net.md_5.bungee.protocol.DefinedPacket;
+import net.md_5.bungee.protocol.Protocol;
 import net.md_5.bungee.protocol.packet.PluginMessage;
 
 @RequiredArgsConstructor
@@ -30,6 +32,7 @@ public class ServerConnection implements Server
     private final boolean forgeServer = false;
     @Getter
     private final Queue<KeepAliveData> keepAlives = new ArrayDeque<>();
+    private final Queue<DefinedPacket> packetQueue = new ConcurrentLinkedQueue<>();
 
     private final Unsafe unsafe = new Unsafe()
     {
@@ -40,10 +43,31 @@ public class ServerConnection implements Server
         }
     };
 
+    public void sendPacketQueued(DefinedPacket packet)
+    {
+        Protocol encodeProtocol = ch.getEncodeProtocol();
+        if ( !encodeProtocol.TO_SERVER.hasPacket( packet.getClass(), ch.getEncodeVersion() ) )
+        {
+            packetQueue.add( packet );
+        } else
+        {
+            unsafe().sendPacket( packet );
+        }
+    }
+
+    public void sendQueuedPackets()
+    {
+        DefinedPacket packet;
+        while ( ( packet = packetQueue.poll() ) != null )
+        {
+            unsafe().sendPacket( packet );
+        }
+    }
+
     @Override
     public void sendData(String channel, byte[] data)
     {
-        unsafe().sendPacket( new PluginMessage( channel, data, forgeServer ) );
+        sendPacketQueued( new PluginMessage( channel, data, forgeServer ) );
     }
 
     @Override

proxy/src/main/java/net/md_5/bungee/UserConnection.java

@@ -20,6 +20,7 @@ import java.util.Map;
 import java.util.Objects;
 import java.util.Queue;
 import java.util.UUID;
+import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.logging.Level;
 import lombok.Getter;
 import lombok.NonNull;
@@ -142,6 +143,7 @@ public final class UserConnection implements ProxiedPlayer
     @Setter
     private ForgeServerHandler forgeServerHandler;
     /*========================================================================*/
+    private final Queue<DefinedPacket> packetQueue = new ConcurrentLinkedQueue<>();
     private final Unsafe unsafe = new Unsafe()
     {
         @Override
@@ -177,6 +179,27 @@ public final class UserConnection implements ProxiedPlayer
         ch.write( packet );
     }
 
+    public void sendPacketQueued(DefinedPacket packet)
+    {
+        Protocol encodeProtocol = ch.getEncodeProtocol();
+        if ( !encodeProtocol.TO_CLIENT.hasPacket( packet.getClass(), getPendingConnection().getVersion() ) )
+        {
+            packetQueue.add( packet );
+        } else
+        {
+            unsafe().sendPacket( packet );
+        }
+    }
+
+    public void sendQueuedPackets()
+    {
+        DefinedPacket packet;
+        while ( ( packet = packetQueue.poll() ) != null )
+        {
+            unsafe().sendPacket( packet );
+        }
+    }
+
     @Deprecated
     public boolean isActive()
     {
@@ -489,10 +512,10 @@ public final class UserConnection implements ProxiedPlayer
                 position = ChatMessageType.SYSTEM;
             }
 
-            unsafe().sendPacket( new SystemChat( message, position.ordinal() ) );
+            sendPacketQueued( new SystemChat( message, position.ordinal() ) );
         } else
         {
-            unsafe().sendPacket( new Chat( message, (byte) position.ordinal(), sender ) );
+            sendPacketQueued( new Chat( message, (byte) position.ordinal(), sender ) );
         }
     }
 
@@ -513,7 +536,7 @@ public final class UserConnection implements ProxiedPlayer
                 net.md_5.bungee.protocol.packet.Title title = new net.md_5.bungee.protocol.packet.Title();
                 title.setAction( net.md_5.bungee.protocol.packet.Title.Action.ACTIONBAR );
                 title.setText( ComponentSerializer.toString( message ) );
-                unsafe.sendPacket( title );
+                sendPacketQueued( title );
             }
         } else
         {
@@ -524,7 +547,7 @@ public final class UserConnection implements ProxiedPlayer
     @Override
     public void sendData(String channel, byte[] data)
     {
-        unsafe().sendPacket( new PluginMessage( channel, data, forgeClientHandler.isForgeUser() ) );
+        sendPacketQueued( new PluginMessage( channel, data, forgeClientHandler.isForgeUser() ) );
     }
 
     @Override
@@ -700,7 +723,7 @@ public final class UserConnection implements ProxiedPlayer
         header = ChatComponentTransformer.getInstance().transform( this, true, header )[0];
         footer = ChatComponentTransformer.getInstance().transform( this, true, footer )[0];
 
-        unsafe().sendPacket( new PlayerListHeaderFooter(
+        sendPacketQueued( new PlayerListHeaderFooter(
                 ComponentSerializer.toString( header ),
                 ComponentSerializer.toString( footer )
         ) );
@@ -712,7 +735,7 @@ public final class UserConnection implements ProxiedPlayer
         header = ChatComponentTransformer.getInstance().transform( this, true, header );
         footer = ChatComponentTransformer.getInstance().transform( this, true, footer );
 
-        unsafe().sendPacket( new PlayerListHeaderFooter(
+        sendPacketQueued( new PlayerListHeaderFooter(
                 ComponentSerializer.toString( header ),
                 ComponentSerializer.toString( footer )
         ) );

proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java

@@ -31,6 +31,7 @@ import net.md_5.bungee.protocol.packet.Chat;
 import net.md_5.bungee.protocol.packet.ClientChat;
 import net.md_5.bungee.protocol.packet.ClientCommand;
 import net.md_5.bungee.protocol.packet.ClientSettings;
+import net.md_5.bungee.protocol.packet.FinishConfiguration;
 import net.md_5.bungee.protocol.packet.KeepAlive;
 import net.md_5.bungee.protocol.packet.LoginAcknowledged;
 import net.md_5.bungee.protocol.packet.PlayerListItem;
@@ -340,10 +341,21 @@ public class UpstreamBridge extends PacketHandler
             ch.setDecodeProtocol( Protocol.CONFIGURATION );
             ch.write( new LoginAcknowledged() );
             ch.setEncodeProtocol( Protocol.CONFIGURATION );
+
+            con.getServer().sendQueuedPackets();
+
             throw CancelSendSignal.INSTANCE;
         }
     }
 
+    @Override
+    public void handle(FinishConfiguration finishConfiguration) throws Exception
+    {
+        con.sendQueuedPackets();
+
+        super.handle( finishConfiguration );
+    }
+
     @Override
     public String toString()
     {

proxy/src/main/java/net/md_5/bungee/netty/ChannelWrapper.java

@@ -69,6 +69,11 @@ public class ChannelWrapper
         ch.pipeline().get( MinecraftEncoder.class ).setProtocolVersion( protocol );
     }
 
+    public int getEncodeVersion()
+    {
+        return ch.pipeline().get( MinecraftEncoder.class ).getProtocolVersion();
+    }
+
     public void write(Object packet)
     {
         if ( !closed )

proxy/src/test/java/net/md_5/bungee/ThrottleTest.java

@@ -1,12 +1,12 @@
 package net.md_5.bungee;
 
+import static org.junit.jupiter.api.Assertions.*;
 import com.google.common.base.Ticker;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.UnknownHostException;
 import java.util.concurrent.TimeUnit;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class ThrottleTest
 {
@@ -38,18 +38,18 @@ public class ThrottleTest
             address = new InetSocketAddress( InetAddress.getByName( null ), 0 );
         }
 
-        Assert.assertFalse( "Address should not be throttled", throttle.throttle( address ) ); // 1
+        assertFalse( throttle.throttle( address ), "Address should not be throttled" ); // 1
-        Assert.assertFalse( "Address should not be throttled", throttle.throttle( address ) ); // 2
+        assertFalse( throttle.throttle( address ), "Address should not be throttled" ); // 2
-        Assert.assertFalse( "Address should not be throttled", throttle.throttle( address ) ); // 3
+        assertFalse( throttle.throttle( address ), "Address should not be throttled" ); // 3
-        Assert.assertTrue( "Address should be throttled", throttle.throttle( address ) ); // The 3rd one must be throttled, but also increased the count to 4
+        assertTrue( throttle.throttle( address ), "Address should be throttled" ); // The 3rd one must be throttled, but also increased the count to 4
 
         throttle.unthrottle( address ); // We are back at 3, next attempt will make it 4 and throttle
         throttle.unthrottle( address ); // Now we are at 2, will not be throttled
-        Assert.assertFalse( "Address should not be throttled", throttle.throttle( address ) ); // 3
+        assertFalse( throttle.throttle( address ), "Address should not be throttled" ); // 3
-        Assert.assertTrue( "Address should be throttled", throttle.throttle( address ) ); // 4
+        assertTrue( throttle.throttle( address ), "Address should be throttled" ); // 4
 
         // Now test expiration
         ticker.value += TimeUnit.MILLISECONDS.toNanos( 50 );
-        Assert.assertFalse( "Address should not be throttled", throttle.throttle( address ) );
+        assertFalse( throttle.throttle( address ), "Address should not be throttled" );
     }
 }

proxy/src/test/java/net/md_5/bungee/scheduler/SchedulerTest.java

@@ -1,13 +1,13 @@
 package net.md_5.bungee.scheduler;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import net.md_5.bungee.api.plugin.DummyPlugin;
 import net.md_5.bungee.api.scheduler.ScheduledTask;
 import net.md_5.bungee.api.scheduler.TaskScheduler;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class SchedulerTest
 {
@@ -31,7 +31,7 @@ public class SchedulerTest
 
         latch.await( 5, TimeUnit.SECONDS );
 
-        Assert.assertEquals( 0, latch.getCount() );
+        assertEquals( 0, latch.getCount() );
     }
 
     @Test
@@ -43,17 +43,17 @@ public class SchedulerTest
         ScheduledTask task = setup( scheduler, b );
         scheduler.cancel( task.getId() );
         Thread.sleep( 250 );
-        Assert.assertFalse( b.get() );
+        assertFalse( b.get() );
 
         task = setup( scheduler, b );
         scheduler.cancel( task );
         Thread.sleep( 250 );
-        Assert.assertFalse( b.get() );
+        assertFalse( b.get() );
 
         task = setup( scheduler, b );
         scheduler.cancel( task.getOwner() );
         Thread.sleep( 250 );
-        Assert.assertFalse( b.get() );
+        assertFalse( b.get() );
     }
 
     @Test
@@ -64,11 +64,11 @@ public class SchedulerTest
 
         setup( scheduler, b );
         Thread.sleep( 250 );
-        Assert.assertTrue( b.get() );
+        assertTrue( b.get() );
 
         b.set( false );
         Thread.sleep( 250 );
-        Assert.assertTrue( b.get() );
+        assertTrue( b.get() );
     }
 
     private ScheduledTask setup(TaskScheduler scheduler, final AtomicBoolean hasRun)

proxy/src/test/java/net/md_5/bungee/util/AddressUtilTest.java

@@ -1,8 +1,8 @@
 package net.md_5.bungee.util;
 
+import static org.junit.jupiter.api.Assertions.*;
 import java.net.InetSocketAddress;
-import org.junit.Assert;
+import org.junit.jupiter.api.Test;
-import org.junit.Test;
 
 public class AddressUtilTest
 {
@@ -11,9 +11,9 @@ public class AddressUtilTest
     public void testScope()
     {
         InetSocketAddress addr = new InetSocketAddress( "0:0:0:0:0:0:0:1%0", 25577 );
-        Assert.assertEquals( "0:0:0:0:0:0:0:1", AddressUtil.sanitizeAddress( addr ) );
+        assertEquals( "0:0:0:0:0:0:0:1", AddressUtil.sanitizeAddress( addr ) );
 
         InetSocketAddress addr2 = new InetSocketAddress( "0:0:0:0:0:0:0:1", 25577 );
-        Assert.assertEquals( "0:0:0:0:0:0:0:1", AddressUtil.sanitizeAddress( addr2 ) );
+        assertEquals( "0:0:0:0:0:0:0:1", AddressUtil.sanitizeAddress( addr2 ) );
     }
 }