diff --git a/src/main/java/fr/xephi/authme/data/limbo/persistence/DistributedFilesPersistenceHandler.java b/src/main/java/fr/xephi/authme/data/limbo/persistence/DistributedFilesPersistenceHandler.java
index bbacd6c55..64a935515 100644
--- a/src/main/java/fr/xephi/authme/data/limbo/persistence/DistributedFilesPersistenceHandler.java
+++ b/src/main/java/fr/xephi/authme/data/limbo/persistence/DistributedFilesPersistenceHandler.java
@@ -41,10 +41,7 @@ class DistributedFilesPersistenceHandler implements LimboPersistenceHandler {
     @Inject
     DistributedFilesPersistenceHandler(@DataFolder File dataFolder, BukkitService bukkitService, Settings settings) {
         cacheFolder = new File(dataFolder, "playerdata");
-        if (!cacheFolder.exists()) {
-            // TODO ljacqu 20170313: Create FileUtils#mkdirs
-            cacheFolder.mkdirs();
-        }
+        FileUtils.createDirectory(cacheFolder);
 
         gson = new GsonBuilder()
             .registerTypeAdapter(LimboPlayer.class, new LimboPlayerSerializer())
diff --git a/src/main/java/fr/xephi/authme/datasource/converter/RakamakConverter.java b/src/main/java/fr/xephi/authme/datasource/converter/RakamakConverter.java
index 4257f0aa7..a65dfbc24 100644
--- a/src/main/java/fr/xephi/authme/datasource/converter/RakamakConverter.java
+++ b/src/main/java/fr/xephi/authme/datasource/converter/RakamakConverter.java
@@ -8,6 +8,7 @@ import fr.xephi.authme.security.PasswordSecurity;
 import fr.xephi.authme.security.crypts.HashedPassword;
 import fr.xephi.authme.settings.Settings;
 import fr.xephi.authme.settings.properties.ConverterSettings;
+import fr.xephi.authme.util.Utils;
 import org.bukkit.command.CommandSender;
 
 import javax.inject.Inject;
@@ -85,8 +86,7 @@ public class RakamakConverter implements Converter {
                     .build();
                 database.saveAuth(auth);
             }
-            ConsoleLogger.info("Rakamak database has been imported correctly");
-            sender.sendMessage("Rakamak database has been imported correctly");
+            Utils.logAndSendMessage(sender, "Rakamak database has been imported correctly");
         } catch (IOException ex) {
             ConsoleLogger.logException("Can't open the rakamak database file! Does it exist?", ex);
         }
diff --git a/src/main/java/fr/xephi/authme/security/HashUtils.java b/src/main/java/fr/xephi/authme/security/HashUtils.java
index 946af52be..3578c80f3 100644
--- a/src/main/java/fr/xephi/authme/security/HashUtils.java
+++ b/src/main/java/fr/xephi/authme/security/HashUtils.java
@@ -85,12 +85,22 @@ public final class HashUtils {
      * @param algorithm The algorithm to hash the message with
      * @return The digest in its hexadecimal representation
      */
-    private static String hash(String message, MessageDigestAlgorithm algorithm) {
-        MessageDigest md = getDigest(algorithm);
-        md.reset();
-        md.update(message.getBytes());
-        byte[] digest = md.digest();
+    public static String hash(String message, MessageDigest algorithm) {
+        algorithm.reset();
+        algorithm.update(message.getBytes());
+        byte[] digest = algorithm.digest();
         return String.format("%0" + (digest.length << 1) + "x", new BigInteger(1, digest));
     }
 
+    /**
+     * Hash the message with the given algorithm and return the hash in its hexadecimal notation.
+     *
+     * @param message The message to hash
+     * @param algorithm The algorithm to hash the message with
+     * @return The digest in its hexadecimal representation
+     */
+    private static String hash(String message, MessageDigestAlgorithm algorithm) {
+        return hash(message, getDigest(algorithm));
+    }
+
 }
diff --git a/src/main/java/fr/xephi/authme/security/crypts/RoyalAuth.java b/src/main/java/fr/xephi/authme/security/crypts/RoyalAuth.java
index 989ef8383..9f5574380 100644
--- a/src/main/java/fr/xephi/authme/security/crypts/RoyalAuth.java
+++ b/src/main/java/fr/xephi/authme/security/crypts/RoyalAuth.java
@@ -1,14 +1,17 @@
 package fr.xephi.authme.security.crypts;
 
 import fr.xephi.authme.security.HashUtils;
+import fr.xephi.authme.security.MessageDigestAlgorithm;
+
+import java.security.MessageDigest;
 
 public class RoyalAuth extends UnsaltedMethod {
 
     @Override
     public String computeHash(String password) {
-        for (int i = 0; i < 25; i++) {
-            // TODO ljacqu 20151228: HashUtils#sha512 gets a new message digest each time...
-            password = HashUtils.sha512(password);
+        MessageDigest algorithm = HashUtils.getDigest(MessageDigestAlgorithm.SHA512);
+        for (int i = 0; i < 25; ++i) {
+            password = HashUtils.hash(password, algorithm);
         }
         return password;
     }
diff --git a/src/main/java/fr/xephi/authme/settings/SpawnLoader.java b/src/main/java/fr/xephi/authme/settings/SpawnLoader.java
index 26f7d03b9..13f28004f 100644
--- a/src/main/java/fr/xephi/authme/settings/SpawnLoader.java
+++ b/src/main/java/fr/xephi/authme/settings/SpawnLoader.java
@@ -45,7 +45,6 @@ public class SpawnLoader implements Reloadable {
      */
     @Inject
     SpawnLoader(@DataFolder File pluginFolder, Settings settings, PluginHookService pluginHookService) {
-        // TODO ljacqu 20160312: Check if resource could be copied and handle the case if not
         File spawnFile = new File(pluginFolder, "spawn.yml");
         FileUtils.copyFileFromResource(spawnFile, "spawn.yml");
         this.authMeConfigurationFile = spawnFile;
diff --git a/src/main/java/fr/xephi/authme/task/purge/PurgeExecutor.java b/src/main/java/fr/xephi/authme/task/purge/PurgeExecutor.java
index 985630cfa..0fddecd57 100644
--- a/src/main/java/fr/xephi/authme/task/purge/PurgeExecutor.java
+++ b/src/main/java/fr/xephi/authme/task/purge/PurgeExecutor.java
@@ -194,7 +194,6 @@ class PurgeExecutor {
     }
 
     // TODO: What is this method for? Is it correct?
-    // TODO: Make it work with OfflinePlayers group data.
     synchronized void purgePermissions(Collection<OfflinePlayer> cleared) {
         if (!settings.getProperty(PurgeSettings.REMOVE_PERMISSIONS)) {
             return;
diff --git a/src/main/java/fr/xephi/authme/util/FileUtils.java b/src/main/java/fr/xephi/authme/util/FileUtils.java
index c9edcf735..fa8c858ad 100644
--- a/src/main/java/fr/xephi/authme/util/FileUtils.java
+++ b/src/main/java/fr/xephi/authme/util/FileUtils.java
@@ -30,7 +30,7 @@ public final class FileUtils {
     public static boolean copyFileFromResource(File destinationFile, String resourcePath) {
         if (destinationFile.exists()) {
             return true;
-        } else if (!destinationFile.getParentFile().exists() && !destinationFile.getParentFile().mkdirs()) {
+        } else if (!createDirectory(destinationFile.getParentFile())) {
             ConsoleLogger.warning("Cannot create parent directories for '" + destinationFile + "'");
             return false;
         }
@@ -50,6 +50,20 @@ public final class FileUtils {
         return false;
     }
 
+    /**
+     * Creates the given directory.
+     *
+     * @param dir the directory to create
+     * @return true upon success, false otherwise
+     */
+    public static boolean createDirectory(File dir) {
+        if (!dir.exists() && !dir.mkdirs()) {
+            ConsoleLogger.warning("Could not create directory '" + dir + "'");
+            return false;
+        }
+        return true;
+    }
+
     /**
      * Returns a JAR file as stream. Returns null if it doesn't exist.
      *
diff --git a/src/test/java/fr/xephi/authme/IsEqualByReflectionMatcher.java b/src/test/java/fr/xephi/authme/IsEqualByReflectionMatcher.java
new file mode 100644
index 000000000..a6033ffd3
--- /dev/null
+++ b/src/test/java/fr/xephi/authme/IsEqualByReflectionMatcher.java
@@ -0,0 +1,84 @@
+package fr.xephi.authme;
+
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+import static org.junit.Assert.fail;
+
+/**
+ * Matcher which checks with reflection that all fields have the same value.
+ * This matcher considers all non-static fields until the Object parent.
+ */
+public final class IsEqualByReflectionMatcher<T> extends TypeSafeMatcher<T> {
+
+    private final T expected;
+
+    private IsEqualByReflectionMatcher(T expected) {
+        this.expected = expected;
+    }
+
+    /**
+     * Creates a matcher that checks if all fields are the same as on the {@code expected} object.
+     *
+     * @param expected the object to match
+     * @param <T> the object's type
+     * @return the matcher for the expected object
+     */
+    public static <T> Matcher<T> isEqualTo(T expected) {
+        return new IsEqualByReflectionMatcher<>(expected);
+    }
+
+    @Override
+    protected boolean matchesSafely(T item) {
+        return assertAreFieldsEqual(item);
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText("parameters " + expected);
+    }
+
+    private boolean assertAreFieldsEqual(T item) {
+        if (expected.getClass() != item.getClass()) {
+            fail("Classes don't match, got " + expected.getClass().getSimpleName()
+                + " and " + item.getClass().getSimpleName());
+            return false;
+        }
+
+        List<Field> fieldsToCheck = getAllFields(expected);
+        for (Field field : fieldsToCheck) {
+            Object lhsValue = ReflectionTestUtils.getFieldValue(field, expected);
+            Object rhsValue = ReflectionTestUtils.getFieldValue(field, item);
+            if (!Objects.equals(lhsValue, rhsValue)) {
+                fail("Field '" + field.getName() + "' does not have same value: '"
+                    + lhsValue + "' vs. '" + rhsValue + "'");
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private static List<Field> getAllFields(Object object) {
+        List<Field> fields = new ArrayList<>();
+        Class<?> currentClass = object.getClass();
+        while (currentClass != null) {
+            for (Field f : currentClass.getDeclaredFields()) {
+                if (!Modifier.isStatic(f.getModifiers())) {
+                    fields.add(f);
+                }
+            }
+            if (currentClass == Object.class) {
+                break;
+            }
+            currentClass = currentClass.getSuperclass();
+        }
+        return fields;
+    }
+}
diff --git a/src/test/java/fr/xephi/authme/command/executable/register/RegisterCommandTest.java b/src/test/java/fr/xephi/authme/command/executable/register/RegisterCommandTest.java
index 6224a6065..d345ca8e1 100644
--- a/src/test/java/fr/xephi/authme/command/executable/register/RegisterCommandTest.java
+++ b/src/test/java/fr/xephi/authme/command/executable/register/RegisterCommandTest.java
@@ -1,6 +1,5 @@
 package fr.xephi.authme.command.executable.register;
 
-import fr.xephi.authme.ReflectionTestUtils;
 import fr.xephi.authme.TestHelper;
 import fr.xephi.authme.mail.EmailService;
 import fr.xephi.authme.message.MessageKey;
@@ -10,7 +9,6 @@ import fr.xephi.authme.process.register.RegistrationType;
 import fr.xephi.authme.process.register.executors.EmailRegisterParams;
 import fr.xephi.authme.process.register.executors.PasswordRegisterParams;
 import fr.xephi.authme.process.register.executors.RegistrationMethod;
-import fr.xephi.authme.process.register.executors.RegistrationParameters;
 import fr.xephi.authme.process.register.executors.TwoFactorRegisterParams;
 import fr.xephi.authme.security.HashAlgorithm;
 import fr.xephi.authme.service.CommonService;
@@ -20,9 +18,6 @@ import fr.xephi.authme.settings.properties.SecuritySettings;
 import org.bukkit.command.BlockCommandSender;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
-import org.hamcrest.Description;
-import org.hamcrest.Matcher;
-import org.hamcrest.TypeSafeMatcher;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -31,16 +26,11 @@ import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnitRunner;
 
-import java.lang.reflect.Field;
-import java.lang.reflect.Modifier;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
-import java.util.List;
-import java.util.Objects;
 
+import static fr.xephi.authme.IsEqualByReflectionMatcher.isEqualTo;
 import static org.hamcrest.Matchers.containsString;
-import static org.junit.Assert.fail;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.BDDMockito.given;
@@ -306,56 +296,4 @@ public class RegisterCommandTest {
         verify(management).performRegister(eq(RegistrationMethod.PASSWORD_REGISTRATION),
             argThat(isEqualTo(PasswordRegisterParams.of(player, "myPass", null))));
     }
-
-
-    // TODO ljacqu 20170317: Document and extract as util
-
-    private static <P extends RegistrationParameters> Matcher<P> isEqualTo(P expected) {
-        return new TypeSafeMatcher<P>() {
-            @Override
-            protected boolean matchesSafely(RegistrationParameters item) {
-                assertAreParamsEqual(expected, item);
-                return true;
-            }
-
-            @Override
-            public void describeTo(Description description) {
-                description.appendText("parameters " + expected);
-            }
-        };
-    }
-
-    private static void assertAreParamsEqual(RegistrationParameters lhs, RegistrationParameters rhs) {
-        if (lhs.getClass() != rhs.getClass()) {
-            fail("Params classes don't match, got " + lhs.getClass().getSimpleName()
-                + " and " + rhs.getClass().getSimpleName());
-        }
-
-        List<Field> fieldsToCheck = getFields(lhs);
-        for (Field field : fieldsToCheck) {
-            Object lhsValue = ReflectionTestUtils.getFieldValue(field, lhs);
-            Object rhsValue = ReflectionTestUtils.getFieldValue(field, rhs);
-            if (!Objects.equals(lhsValue, rhsValue)) {
-                fail("Field '" + field.getName() + "' does not have same value: '"
-                    + lhsValue + "' vs. '" + rhsValue + "'");
-            }
-        }
-    }
-
-    private static List<Field> getFields(RegistrationParameters params) {
-        List<Field> fields = new ArrayList<>();
-        Class<?> currentClass = params.getClass();
-        while (currentClass != null) {
-            for (Field f : currentClass.getDeclaredFields()) {
-                if (!Modifier.isStatic(f.getModifiers())) {
-                    fields.add(f);
-                }
-            }
-            if (currentClass == RegistrationParameters.class) {
-                break;
-            }
-            currentClass = currentClass.getSuperclass();
-        }
-        return fields;
-    }
 }
diff --git a/src/test/java/fr/xephi/authme/service/AntiBotServiceTest.java b/src/test/java/fr/xephi/authme/service/AntiBotServiceTest.java
index dd6b6c789..f1bb641d5 100644
--- a/src/test/java/fr/xephi/authme/service/AntiBotServiceTest.java
+++ b/src/test/java/fr/xephi/authme/service/AntiBotServiceTest.java
@@ -11,7 +11,6 @@ import fr.xephi.authme.settings.Settings;
 import fr.xephi.authme.settings.properties.ProtectionSettings;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitTask;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
@@ -82,7 +81,6 @@ public class AntiBotServiceTest {
     }
 
     @Test
-    @Ignore // TODO ljacqu 20161030: Fix test
     public void shouldActivateAntibot() {
         // given - listening antibot
         runSyncDelayedTaskWithDelay(bukkitService);