Validation on properties of a parameter

[aarongorka]

An invalid property on a parameter doesn't seem to trigger an error (there's a typo in the Default key):

Parameters:
  MyPassword:
    Description: Password
    Type: String
    Defaut: hunter2
    NoEcho: True

This parameter was used in some UserData via Fn::Sub.

[martysweet]

Thanks @aarongorka

This is still an issue in v1.3.4.

[akdor1154]

Two approaches -

• hand-write custom validation code for Parameters (also Outputs and Metadata and probably others) (not actually that awful, it would be quite small and probably reusable between all of these sections)
• write a json schema for these sections, add a runtime dependency on jsonschema, and run jsonschema validation at validation time.

I am actually tending towards the first, but I wouldn't have a huge opinion either way.