Exercise 1 - Solution - Task 1

This is a simple reference implementation of a simple chat bot, that you could use as a reference on how to implement Task 1 of the exercise.

Please Replace Funny everywhere with your unique bot name!

The ChatBot class:

public class FunnyBot implements ChatBot {

    @Override
    public String getName() {
        return "Funny";
    }

    @Override
    public String getDescription() {
        return "Responds to every message containing the word `fun`.";
    }

    @Override
    public boolean canHandleMessage(String message) {
        String msg = message.toLowerCase();
        return msg.contains("fun");
    }

    @Override
    public String getAnswer(String message) {
        return "Sorry, but I think this is no fun at all!"    
    }

}

Register your bot inside method init() in ChatBotFactory class:

botRegistry.registerBot(new WelcomeBot());

You have at least to adjust the ChatBotRegistrationTest to reflect the newly added bot:

    @Test
    public void numberOfRegisteredBotsAsExpected() {
        assertThat(chatBotRegistry.getRegisteredBots())
            .describedAs("Registered bots")
            .hasSize(1); // <--- adjust the number of expected bots here!
    }

    // add another test method for the new added bot:
    @Test
    public void funnyBotIsRegistered() {
        expectBotRegistered("Funny");
    }

Finally a test for the new chat bot should have been added:

    public class FunnyBotTest {

        private FunnyBot bot = new FunnyBot();

        @Test
        public void handlesAllFunMessages() {
            assertThat(bot.canHandleMessage("fun")).isEqualTo(true);
            assertThat(bot.canHandleMessage("funny")).isEqualTo(true);
            assertThat(bot.canHandleMessage("something is sooo FUNNY in the middle of the sentence")).isEqualTo(true);                    
        }

        @Test
        public void answersWithNoFunAtAll() {
            assertThat(bot.getAnswer("some message containing fun"))
                .isEqualTo("Sorry, but I think this is no fun at all!");
        }

    }