Create test for change password command

src/main/java/fr/xephi/authme/command/executable/changepassword/ChangePasswordCommand.java

@@ -17,17 +17,17 @@ public class ChangePasswordCommand extends ExecutableCommand {
 
     @Override
     public boolean executeCommand(CommandSender sender, CommandParts commandReference, CommandParts commandArguments) {
+        // Make sure the current command executor is a player
+        if (!(sender instanceof Player)) {
+            return true;
+        }
+
         final Messages m = Messages.getInstance();
 
         // Get the passwords
         String playerPass = commandArguments.get(0);
         String playerPassVerify = commandArguments.get(1);
 
-        // Make sure the current command executor is a player
-        if(!(sender instanceof Player)) {
-            return true;
-        }
-
         // Get the player instance and make sure it's authenticated
         Player player = (Player) sender;
         String name = player.getName().toLowerCase();
@@ -37,6 +37,7 @@ public class ChangePasswordCommand extends ExecutableCommand {
         }
 
         // Make sure the password is allowed
+        // TODO ljacqu 20151121: The password confirmation appears to be never verified
         String playerPassLowerCase = playerPass.toLowerCase();
         if (playerPassLowerCase.contains("delete") || playerPassLowerCase.contains("where") || playerPassLowerCase.contains("insert") || playerPassLowerCase.contains("modify") || playerPassLowerCase.contains("from") || playerPassLowerCase.contains("select") || playerPassLowerCase.contains(";") || playerPassLowerCase.contains("null") || !playerPassLowerCase.matches(Settings.getPassRegex)) {
             m.send(player, "password_error");
@@ -50,12 +51,10 @@ public class ChangePasswordCommand extends ExecutableCommand {
             m.send(player, "pass_len");
             return true;
         }
-        if (!Settings.unsafePasswords.isEmpty()) {
-            if (Settings.unsafePasswords.contains(playerPassLowerCase)) {
+        if (!Settings.unsafePasswords.isEmpty() && Settings.unsafePasswords.contains(playerPassLowerCase)) {
             m.send(player, "password_error_unsafe");
             return true;
         }
-        }
 
         // Set the password
         final AuthMe plugin = AuthMe.getInstance();

src/test/java/fr/xephi/authme/AuthMeMockUtil.java

@@ -1,5 +1,6 @@
 package fr.xephi.authme;
 
+import fr.xephi.authme.cache.auth.PlayerCache;
 import fr.xephi.authme.settings.Messages;
 import org.mockito.Mockito;
 
@@ -30,6 +31,14 @@ public final class AuthMeMockUtil {
         mockSingletonForClass(Messages.class, "singleton", mock);
     }
 
+    /**
+     * Creates a mock singleton for the player cache, retrievable from {@link PlayerCache#getInstance()}.
+     */
+    public static void mockPlayerCacheInstance() {
+        PlayerCache mock = Mockito.mock(PlayerCache.class);
+        mockSingletonForClass(PlayerCache.class, "singleton", mock);
+    }
+
     /**
      * Sets a field of a class to the given mock.
      *

src/test/java/fr/xephi/authme/command/executable/changepassword/ChangePasswordCommandTest.java

@@ -0,0 +1,166 @@
+package fr.xephi.authme.command.executable.changepassword;
+
+import fr.xephi.authme.AuthMeMockUtil;
+import fr.xephi.authme.cache.auth.PlayerCache;
+import fr.xephi.authme.command.CommandParts;
+import fr.xephi.authme.settings.Messages;
+import fr.xephi.authme.settings.Settings;
+import org.bukkit.command.BlockCommandSender;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import org.junit.Before;
+import org.junit.Test;
+
+
+import java.util.Arrays;
+
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+/**
+ * Test for {@link ChangePasswordCommand}.
+ */
+public class ChangePasswordCommandTest {
+
+    private Messages messagesMock;
+    private PlayerCache cacheMock;
+
+    @Before
+    public void setUpMocks() {
+        AuthMeMockUtil.mockAuthMeInstance();
+        AuthMeMockUtil.mockPlayerCacheInstance();
+        cacheMock = PlayerCache.getInstance();
+
+        AuthMeMockUtil.mockMessagesInstance();
+        messagesMock = Messages.getInstance();
+
+        // Only allow passwords with alphanumerical characters for the test
+        Settings.getPassRegex = "[a-zA-Z0-9]+";
+        Settings.getPasswordMinLen = 2;
+        Settings.passwordMaxLength = 50;
+
+        // TODO ljacqu 20151121: Cannot mock getServer() as it's final
+        // Probably the Command class should delegate as the others do
+        /*
+        Server server = Mockito.mock(Server.class);
+        schedulerMock = Mockito.mock(BukkitScheduler.class);
+        Mockito.when(server.getScheduler()).thenReturn(schedulerMock);
+        Mockito.when(pluginMock.getServer()).thenReturn(server);
+        */
+    }
+
+    @Test
+    public void shouldRejectNonPlayerSender() {
+        // given
+        CommandSender sender = mock(BlockCommandSender.class);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+        CommandParts arguments = mock(CommandParts.class);
+
+        // when
+        command.executeCommand(sender, new CommandParts(), arguments);
+
+        // then
+        verify(arguments, never()).get(anyInt());
+        //verify(pluginMock, never()).getServer();
+    }
+
+    @Test
+    public void shouldRejectNotLoggedInPlayer() {
+        // given
+        CommandSender sender = initPlayerWithName("name", false);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("pass"));
+
+        // then
+        verify(messagesMock).send(sender, "not_logged_in");
+        //verify(pluginMock, never()).getServer();
+    }
+
+    @Test
+    public void shouldDenyInvalidPassword() {
+        // given
+        CommandSender sender = initPlayerWithName("name", true);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("!pass"));
+
+        // then
+        verify(messagesMock).send(sender, "password_error");
+        //verify(pluginMock, never()).getServer();
+    }
+
+
+    @Test
+    public void shouldRejectPasswordEqualToNick() {
+        // given
+        CommandSender sender = initPlayerWithName("tester", true);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("Tester"));
+
+        // then
+        verify(messagesMock).send(sender, "password_error_nick");
+        //verify(pluginMock, never()).getServer();
+    }
+
+    @Test
+    public void shouldRejectTooLongPassword() {
+        // given
+        CommandSender sender = initPlayerWithName("abc12", true);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+        Settings.passwordMaxLength = 3;
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("test"));
+
+        // then
+        verify(messagesMock).send(sender, "pass_len");
+        //verify(pluginMock, never()).getServer();
+    }
+
+    @Test
+    public void shouldRejectTooShortPassword() {
+        // given
+        CommandSender sender = initPlayerWithName("abc12", true);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+        Settings.getPasswordMinLen = 7;
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("tester"));
+
+        // then
+        verify(messagesMock).send(sender, "pass_len");
+        //verify(pluginMock, never()).getServer();
+    }
+
+    @Test
+    public void shouldRejectUnsafeCustomPassword() {
+        // given
+        CommandSender sender = initPlayerWithName("player", true);
+        ChangePasswordCommand command = new ChangePasswordCommand();
+        Settings.unsafePasswords = Arrays.asList("test", "abc123");
+
+        // when
+        command.executeCommand(sender, new CommandParts(), new CommandParts("abc123"));
+
+        // then
+        verify(messagesMock).send(sender, "password_error_unsafe");
+        //verify(pluginMock, never()).getServer();
+    }
+
+    private Player initPlayerWithName(String name, boolean loggedIn) {
+        Player player = mock(Player.class);
+        when(player.getName()).thenReturn(name);
+        when(cacheMock.isAuthenticated(name)).thenReturn(loggedIn);
+        return player;
+    }
+
+}