Add basic unit tests

telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/AbilityBotI18nTest.java

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+package org.telegram.abilitybots.api.bot;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.telegram.abilitybots.api.db.DBContext;
+import org.telegram.abilitybots.api.objects.EndUser;
+import org.telegram.abilitybots.api.objects.MessageContext;
+import org.telegram.abilitybots.api.sender.MessageSender;
+import org.telegram.abilitybots.api.sender.SilentSender;
+
+import java.io.IOException;
+import java.util.Locale;
+
+import static org.apache.commons.lang3.StringUtils.EMPTY;
+import static org.mockito.Mockito.*;
+import static org.mockito.internal.verification.VerificationModeFactory.times;
+import static org.telegram.abilitybots.api.db.MapDBContext.offlineInstance;
+import static org.telegram.abilitybots.api.objects.EndUser.endUser;
+
+public class AbilityBotI18nTest {
+    public static final EndUser NO_LANGUAGE_USER = endUser(1, "first", "last", "username", null);
+    public static final EndUser ITALIAN_USER = endUser(2, "first", "last", "username", Locale.ITALY);
+
+    private DBContext db;
+    private DefaultBot bot;
+
+    private NoPublicCommandsBot noCommandsBot;
+
+    private MessageSender sender;
+    private SilentSender silent;
+
+    @Before
+    public void setUp() {
+        db = offlineInstance("db");
+        bot = new DefaultBot(EMPTY, EMPTY, db);
+
+        silent = mock(SilentSender.class);
+
+        bot.sender = sender;
+        bot.silent = silent;
+    }
+
+    @Test
+    public void missingPublicCommandsLocalizedCorrectly() {
+        NoPublicCommandsBot noCommandsBot = new NoPublicCommandsBot(EMPTY, EMPTY, db);
+        noCommandsBot.silent = silent;
+
+        MessageContext context = mock(MessageContext.class);
+        when(context.chatId()).thenReturn(Long.valueOf(NO_LANGUAGE_USER.id()));
+        when(context.user()).thenReturn(NO_LANGUAGE_USER);
+
+        noCommandsBot.reportCommands().action().accept(context);
+
+        verify(silent, times(1))
+                .send("No public commands found.", NO_LANGUAGE_USER.id());
+
+        //
+
+        MessageContext context1 = mock(MessageContext.class);
+        when(context1.chatId()).thenReturn(Long.valueOf(ITALIAN_USER.id()));
+        when(context1.user()).thenReturn(ITALIAN_USER);
+
+        noCommandsBot.reportCommands().action().accept(context1);
+
+        verify(silent, times(1))
+                .send("Non sono presenti comandi pubblici.", ITALIAN_USER.id());
+    }
+
+
+    @After
+    public void tearDown() throws IOException {
+        db.clear();
+        db.close();
+    }
+}

telegrambots-abilities/src/test/java/org/telegram/abilitybots/api/bot/NoPublicCommandsBot.java

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+package org.telegram.abilitybots.api.bot;
+
+import org.telegram.abilitybots.api.db.DBContext;
+
+public class NoPublicCommandsBot extends AbilityBot {
+
+
+    protected NoPublicCommandsBot(String botToken, String botUsername, DBContext db) {
+        super(botToken, botUsername, db);
+    }
+
+    @Override
+    public int creatorId() {
+        return 0;
+    }
+}

telegrambots-abilities/src/test/resources/messages_it_IT.properties

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+ability.commands.notFound=Non sono presenti comandi pubblici.