#450 Make reload & messages functionality use NewSetting

- Change ReloadCommand to use the new setting functionality
- Check and construct the messages file in NewSetting
- Unrelated: change MessagesManager not to extend CustomConfiguration anymore

src/test/java/fr/xephi/authme/command/CommandServiceTest.java

@@ -18,6 +18,7 @@ import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
 
+import java.io.File;
 import java.util.Arrays;
 import java.util.List;
 
@@ -95,19 +96,6 @@ public class CommandServiceTest {
         verify(commandMapper).mapPartsToCommand(sender, commandParts);
     }
 
-    @Test
-    @Ignore
-    public void shouldRunTaskInAsync() {
-        // given
-        Runnable runnable = mock(Runnable.class);
-
-        // when
-        commandService.runTaskAsynchronously(runnable);
-
-        // then
-        // TODO ljacqu 20151226: AuthMe#getServer() is final, i.e. not mockable
-    }
-
     @Test
     public void shouldGetDataSource() {
         // given
@@ -193,10 +181,40 @@ public class CommandServiceTest {
         given(settings.getProperty(property)).willReturn(7);
 
         // when
-        int result = settings.getProperty(property);
+        int result = commandService.getProperty(property);
 
         // then
         assertThat(result, equalTo(7));
         verify(settings).getProperty(property);
     }
+
+    @Test
+    public void shouldReloadMessages() {
+        // given
+        File file = new File("some/bogus-file.test");
+
+        // when
+        commandService.reloadMessages(file);
+
+        // then
+        verify(messages).reload(file);
+    }
+
+    @Test
+    public void shouldReturnSettings() {
+        // given/when
+        NewSetting result = commandService.getSettings();
+
+        // then
+        assertThat(result, equalTo(settings));
+    }
+
+    @Test
+    public void shouldReturnAuthMe() {
+        // given/when
+        AuthMe result = commandService.getAuthMe();
+
+        // then
+        assertThat(result, equalTo(authMe));
+    }
 }