Enforce rate start_minute / end_minute coverage

[zanebclark]

I'd like to propose that the following requirements be introduced to the Rate / Rule spec:

The complete set of rates associated with a given rule must span from start_minutes = 0 or null to end_minutes = rule.max_stay
There can be no overlap of rates associated with a single policy

If a user were to create the following rate, there would be no rate applicable between minutes 1-9 and after minute 15:

• per_hour = 25
• start_minutes = 10
• end_minutes = 15

If the intent was to allow for free parking up until 10 minutes, the user would initially need to define the following:

• per_hour = 0
• start_minutes = 0
• end_minutes = 9

Furthermore, if the intent was to allow for free parking after minute 15, the user would also need to define the following:

• per_hour = 0
• start_minutes = 16
• end_minutes = null

This would achieve the following requirement:

The complete set of rates associated with a given rule must span from start_minutes = 0 or null to end_minutes = rule.max_stay

[schnuerle]

I see your point. Are you suggesting just adding some clarifying language like you suggest, to make this requirement clear?

[zanebclark]

Sounds like a plan!

[schnuerle]

Feel free to make a PR and add the language where you are thinking it should go. Make it against the feature-release-work-1 branch. It makes you a contributor too! Or I will make the edit sometime soon.

[zanebclark]

Filed #57