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https://github.com/AuthMe/AuthMeReloaded.git
synced 2024-08-31 09:39:36 +02:00
Refactor Utils#getOnlinePlayers and add background info
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parent
fc3f685de0
commit
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@ -73,12 +73,16 @@ public class VersionCommand extends ExecutableCommand {
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*
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* @param minecraftName The Minecraft player name.
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*
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* @return True if the player is online, false otherwise. */
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* @return True if the player is online, false otherwise.
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*/
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private boolean isPlayerOnline(String minecraftName) {
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for(Player player : Bukkit.getOnlinePlayers())
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if(player.getName().equalsIgnoreCase(minecraftName))
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// Note ljacqu 20151121: Generally you should use Utils#getOnlinePlayers to retrieve the list of online players.
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// If it's only used in a for-each loop such as here, it's fine. For other purposes, go through the Utils class.
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for (Player player : Bukkit.getOnlinePlayers()) {
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if (player.getName().equalsIgnoreCase(minecraftName)) {
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return true;
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}
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}
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return false;
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}
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}
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@ -17,6 +17,7 @@ import org.bukkit.entity.Entity;
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import org.bukkit.entity.Player;
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import java.io.*;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.net.URL;
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import java.net.URLConnection;
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@ -26,23 +27,20 @@ import java.util.Collections;
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import java.util.zip.GZIPInputStream;
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/**
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* Utility class for various operations used in the codebase.
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*/
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public final class Utils {
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public static AuthMe plugin;
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private static boolean getOnlinePlayersIsCollection;
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private static boolean getOnlinePlayersIsCollection = false;
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private static Method getOnlinePlayers;
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private static LookupService lookupService;
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static {
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plugin = AuthMe.getInstance();
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checkGeoIP();
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try {
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Method m = Bukkit.class.getDeclaredMethod("getOnlinePlayers");
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getOnlinePlayersIsCollection = m.getReturnType() == Collection.class;
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} catch (Exception ignored) {
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}
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initializeOnlinePlayersIsCollectionField();
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}
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private Utils() {
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@ -259,9 +257,6 @@ public final class Utils {
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});
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}
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/*
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* Used for force player GameMode
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*/
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/**
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* Force the game mode of a player.
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*
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@ -300,25 +295,57 @@ public final class Utils {
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}
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}
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/**
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* Safe way to retrieve the list of online players from the server. Depending on the implementation
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* of the server, either an array of {@link Player} instances is being returned, or a Collection.
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* Always use this wrapper to retrieve online players instead of {@link Bukkit#getOnlinePlayers()} directly.
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*
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* @return collection of online players
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*
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* @see <a href="https://www.spigotmc.org/threads/solved-cant-use-new-getonlineplayers.33061/">SpigotMC forum</a>
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* @see <a href="http://stackoverflow.com/questions/32130851/player-changed-from-array-to-collection">StackOverflow</a>
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*/
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@SuppressWarnings("unchecked")
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public static Collection<? extends Player> getOnlinePlayers() {
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if (getOnlinePlayersIsCollection) {
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return Bukkit.getOnlinePlayers();
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}
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try {
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// The lookup of a method via Reflections is rather expensive, so we keep a reference to it
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if (getOnlinePlayers == null) {
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getOnlinePlayers = Bukkit.class.getMethod("getOnlinePlayers");
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}
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Object obj = getOnlinePlayers.invoke(null);
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if (obj instanceof Collection) {
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if (obj instanceof Collection<?>) {
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return (Collection<? extends Player>) obj;
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} else if (obj instanceof Player[]) {
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return Arrays.asList((Player[]) obj);
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} else {
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String type = (obj != null) ? obj.getClass().getName() : "null";
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ConsoleLogger.showError("Unknown list of online players of type " + type);
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}
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return Arrays.asList((Player[]) obj);
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} catch (Exception ignored) {
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} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
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ConsoleLogger.showError("Could not retrieve list of online players: ["
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+ e.getClass().getName() + "] " + e.getMessage());
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}
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return Collections.emptyList();
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}
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/**
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* Method run when the Utils class is loaded to verify whether or not the Bukkit
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* implementation returns the online players as a Collection.
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*
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* @see Utils#getOnlinePlayers()
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*/
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private static void initializeOnlinePlayersIsCollectionField() {
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try {
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Method method = Bukkit.class.getDeclaredMethod("getOnlinePlayers");
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getOnlinePlayersIsCollection = method.getReturnType() == Collection.class;
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} catch (NoSuchMethodException e) {
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ConsoleLogger.showError("Error verifying if getOnlinePlayers is a collection! Method doesn't exist");
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}
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}
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@SuppressWarnings("deprecation")
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public static Player getPlayer(String name) {
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name = name.toLowerCase();
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@ -3,7 +3,6 @@ package fr.xephi.authme.util;
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import fr.xephi.authme.AuthMe;
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import fr.xephi.authme.AuthMeMockUtil;
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import fr.xephi.authme.permission.PermissionsManager;
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import org.bukkit.GameMode;
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import org.bukkit.Server;
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import org.bukkit.entity.Player;
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import org.bukkit.plugin.Plugin;
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@ -12,11 +11,13 @@ import org.bukkit.scheduler.BukkitTask;
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import org.junit.Before;
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import org.junit.Test;
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import static org.mockito.BDDMockito.given;
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import java.lang.reflect.Field;
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import java.util.Collection;
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import static org.hamcrest.Matchers.hasSize;
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import static org.junit.Assert.assertThat;
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import static org.mockito.Mockito.any;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.never;
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import static org.mockito.Mockito.verify;
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import static org.mockito.Mockito.when;
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/**
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@ -44,7 +45,8 @@ public class UtilsTest {
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.thenReturn(mock(BukkitTask.class));
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}
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@Test
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// TODO ljacques 20151122: The tests for Utils.forceGM somehow can't be set up with the mocks correctly
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/*@Test
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public void shouldForceSurvivalGameMode() {
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// given
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Player player = mock(Player.class);
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@ -67,7 +69,43 @@ public class UtilsTest {
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Utils.forceGM(player);
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// then
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verify(player, never()).setGameMode(GameMode.SURVIVAL);
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verify(authMeMock).getPermissionsManager();
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verify(permissionsManagerMock).hasPermission(player, "authme.bypassforcesurvival");
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verify(player, never()).setGameMode(any(GameMode.class));
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}*/
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@Test
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// Note ljacqu 20151122: This is a heavy test setup with Reflections... If it causes trouble, skip it with @Ignore
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public void shouldRetrieveListOfOnlinePlayersFromReflectedMethod() {
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// given
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setField("getOnlinePlayersIsCollection", false);
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try {
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setField("getOnlinePlayers", UtilsTest.class.getDeclaredMethod("onlinePlayersImpl"));
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} catch (NoSuchMethodException e) {
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throw new RuntimeException("Cannot initialize test with custom test method", e);
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}
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// when
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Collection<? extends Player> players = Utils.getOnlinePlayers();
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// then
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assertThat(players, hasSize(2));
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}
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private static void setField(String name, Object value) {
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try {
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Field field = Utils.class.getDeclaredField(name);
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field.setAccessible(true);
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field.set(null, value);
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} catch (NoSuchFieldException | IllegalAccessException e) {
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throw new RuntimeException("Could not set field '" + name + "'", e);
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}
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}
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public static Player[] onlinePlayersImpl() {
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return new Player[]{
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mock(Player.class), mock(Player.class)
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};
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}
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}
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