Add new channel consistency unit test

src/main/java/net/dv8tion/jda/api/entities/channel/concrete/Category.java

@@ -72,6 +72,7 @@ default List<GuildChannel> getChannels()
         channels.addAll(getStageChannels());
         channels.addAll(getNewsChannels());
         channels.addAll(getForumChannels());
+        channels.addAll(getMediaChannels());
         Collections.sort(channels);
 
         return Collections.unmodifiableList(channels);
@@ -124,6 +125,21 @@ default List<ForumChannel> getForumChannels()
         ));
     }
 
+    /**
+     * All {@link net.dv8tion.jda.api.entities.channel.concrete.MediaChannel MediaChannels} listed for this Category
+     *
+     * @return Immutable list of all child ForumChannels
+     */
+    @Nonnull
+    default List<MediaChannel> getMediaChannels()
+    {
+        return Collections.unmodifiableList(getGuild().getMediaChannelCache().applyStream(stream ->
+                stream.filter(channel -> equals(channel.getParentCategory()))
+                        .sorted()
+                        .collect(Collectors.toList())
+        ));
+    }
+
     /**
      * All {@link VoiceChannel VoiceChannels}
      * listed for this Category

src/test/java/net/dv8tion/jda/ChannelConsistencyTest.java

@@ -0,0 +1,119 @@
+/*
+ * Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.dv8tion.jda;
+
+import net.dv8tion.jda.api.entities.Guild;
+import net.dv8tion.jda.api.entities.channel.ChannelType;
+import net.dv8tion.jda.api.entities.channel.attribute.IGuildChannelContainer;
+import net.dv8tion.jda.api.entities.channel.concrete.Category;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.Locale;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class ChannelConsistencyTest
+{
+    private static Set<String> getMethodNames(Class<?> clazz)
+    {
+        return Arrays.stream(clazz.getDeclaredMethods()).map(Method::getName).collect(Collectors.toSet());
+    }
+
+    private static String getChannelName(ChannelType type)
+    {
+        return type.name().substring(0, 1) + type.name().substring(1).toLowerCase(Locale.ROOT);
+    }
+
+    @Test
+    public void checkCreateChannelMethods()
+    {
+        Set<String> guildMethods = getMethodNames(Guild.class);
+
+        EnumSet<ChannelType> creatable = EnumSet.complementOf(EnumSet.of(
+                ChannelType.UNKNOWN, ChannelType.PRIVATE, ChannelType.GROUP, ChannelType.CATEGORY,
+                ChannelType.GUILD_PUBLIC_THREAD, ChannelType.GUILD_PRIVATE_THREAD, ChannelType.GUILD_NEWS_THREAD
+        ));
+
+        for (ChannelType type : creatable)
+        {
+            String channelName = getChannelName(type);
+            String methodName = "create" + channelName + "Channel";
+            Assertions.assertTrue(guildMethods.contains(methodName), "Missing method Guild#" + methodName);
+        }
+
+        Set<String> categoryMethods = getMethodNames(Category.class);
+
+        for (ChannelType type : creatable)
+        {
+            String channelName = getChannelName(type);
+            String methodName = "create" + channelName + "Channel";
+            Assertions.assertTrue(categoryMethods.contains(methodName), "Missing method Category#" + methodName);
+        }
+    }
+
+    @Test
+    public void checkCacheAccessMethods()
+    {
+        Set<String> jdaMethods = getMethodNames(IGuildChannelContainer.class);
+        Set<String> categoryMethods = getMethodNames(Category.class);
+
+        EnumSet<ChannelType> cacheable = EnumSet.complementOf(EnumSet.of(
+            ChannelType.UNKNOWN, ChannelType.PRIVATE, ChannelType.GROUP, ChannelType.CATEGORY,
+            ChannelType.GUILD_PUBLIC_THREAD, ChannelType.GUILD_PRIVATE_THREAD, ChannelType.GUILD_NEWS_THREAD
+        ));
+
+        for (ChannelType type : cacheable)
+        {
+            String channelName = getChannelName(type);
+
+            String methodName = "get" + channelName + "ChannelCache";
+            Assertions.assertTrue(jdaMethods.contains(methodName), "Missing method IGuildChannelContainer#" + methodName);
+
+            methodName = "get" + channelName + "ChannelsByName";
+            Assertions.assertTrue(jdaMethods.contains(methodName), "Missing method IGuildChannelContainer#" + methodName);
+
+            methodName = "get" + channelName + "ChannelById";
+            Assertions.assertTrue(jdaMethods.contains(methodName), "Missing method IGuildChannelContainer#" + methodName);
+
+            methodName = "get" + channelName + "Channels";
+            Assertions.assertTrue(jdaMethods.contains(methodName), "Missing method IGuildChannelContainer#" + methodName);
+            Assertions.assertTrue(categoryMethods.contains(methodName), "Missing method Category#" + methodName);
+        }
+    }
+
+    @Test
+    public void checkManagerExists()
+    {
+        EnumSet<ChannelType> editable = EnumSet.complementOf(EnumSet.of(
+                ChannelType.UNKNOWN, ChannelType.PRIVATE, ChannelType.GROUP, ChannelType.CATEGORY,
+                ChannelType.GUILD_PUBLIC_THREAD, ChannelType.GUILD_PRIVATE_THREAD, ChannelType.GUILD_NEWS_THREAD
+        ));
+
+        for (ChannelType type : editable)
+        {
+            String channelName = getChannelName(type);
+
+            Assertions.assertDoesNotThrow(() -> {
+                Class.forName("net.dv8tion.jda.api.managers.channel.concrete." + channelName + "ChannelManager");
+            }, "Missing manager interface for ChannelType." + type);
+        }
+    }
+}