Awesome

Greeting Service Kata

A Code Kata intended to practice TDD Outside-In.

Welcome!

Hello developer! :wave: At the HELLO WORLD! Inc. company we are excited to develop and release a new idea into the market! We want to build a new service to send customized greeting messages to our users.

Here you'll find few requirements

• The service have to expose an HTTP API which can be called from other HTTP clients.
• The service can also be used from a command line or an interactive shell.

Try to complete each feature before proceeding to the next one. We like to work iteratively.

Feature One

Just a Greeting

When a greeting message is requested
Then the system will reply with "Hello my friend!"

Feature Two

Greeting a User with a customized message!

When a User with the name Joe request a greeting message
Then the system will reply with a customized message that says:
"Hello Joe!"

Feature Three

Greeting a User by choosing a random greeting message from a set of messages

When a User with the name Joe request a greeting message
Then the system will reply with a customized message that says:
"Hey Joe, nice to see you here!"

List of predefined messages

• Hello {User}!
• Hey {User}, nice to see you here!
• {User} welcome back!
• Have a splendid day {User}.

Retrospective

• How difficult it was to boostrap your project and setup your first test?
• Do you think the requirements were clear enough?
• Which was the most difficult step? Why?

Feature Four

Greeting a User by choosing a greeting message from a predefined set of messages, based on the time of the day.

Requesting a greeting message early in the morning

When a User with the name Joe request a greeting message
And the time is early in the morning
Then the system will reply with a customized message that says:
"Good morning, Joe! The sun is high and shining!"

List of predefined messages based on the time

• Morning (from 7 AM to 11 AM) :sunny:
  • Good morning, {User}! The sun is high and shining!
  • Hey {User}, nice to see you here!
  • {User} welcome back!
  • Have a splendid day {User}.
• The rest of the day (from 12 PM to 8 PM) :clock3:
  • Hello {User}!
  • You are great {User}
• Night (from 9 PM to 6 AM) :zzz:
  • Have a good night, {User}
  • Wish you sweet dreams {User} ...
  • It was a great day! {User} it's time to relax!

Retrospective

• Do you think your design is simple enough?
• What are the parts of your code you believe are most likely to change?
  • Do you think your code can be easily extended?

Credits

The inspiration of this Code Kata comes from String Calculator Kata, The Goose Game Kata, RPG Combat Kata and GOOS style TDD by Example - Sagy Rozman.