a-lights-story Pub Share

The "lights" story

Stories (aka user stories or scenarios) are told in terms of input messages (or triggers) and expected messages or values...

On one beautiful summer eve, a guest arrived, so let's send that message:

send::  msg home.guest_arrived  (name="Jane")

Naturally, the lights must have come on and Jane was greeted:

expect::  lights.on
expect::  (lightIntensity is "bright")

expect::  (greeting is "Greetings, Jane")
expect::  chimes.welcome (name is "Jane")

Let's see if John is greeted - he shouldn't be.

send::  msg home.guest_arrived  (name="John")

expect::  (greeting not defined)

The implementation of these rules is in a-lights-spec, check it out!

Play with this: change some values, for instance Jane to Jim and see how things look when there are errors.


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By: Razie | 2016-06-17 .. 2023-06-05 | Tags: story , dsl , home


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