Since the :post_started_at and :post_ended_at fields are of type Date, we check
with Date.current and not with Time.current.
This change has been caused because some test suites were failing
(https://github.com/consul/consul/runs/2170798218?check_suite_focus=true).
The code we had was causing the banners to be available a few hours earlier
or later than they should be depending on the time zone of the application.
Banners created through the admin form were getting the default color.
However, banners created by other means (like the `db:dev_seed` rake
task) were not getting these default values.
This feature was originally implemented when we were using Rails 4.
With Rails 5, we can provide default values to all new banners and
simplify the code at the same time thanks to its `attribute` method.
Now, when creating a new banner, instead of getting a blank space, we
get an empty line with the banner's default background color, which most
users won't know what it's about until they fill in the banner's title.
So we're not displaying the content of the banner when it's empty,
thanks to the `:empty` CSS pseudoclass.
We were very inconsistent regarding these rules.
Personally I prefer no empty lines around blocks, clases, etc... as
recommended by the Ruby style guide [1], and they're the default values
in rubocop, so those are the settings I'm applying.
The exception is the `private` access modifier, since we were leaving
empty lines around it most of the time. That's the default rubocop rule
as well. Personally I don't have a strong preference about this one.
[1] https://rubystyle.guide/#empty-lines-around-bodies
So now we test in depth at the model level, and can be a bit more
relaxed about integration tests for translations.
Note we're defining some extra factories to make sure all translatable
attributes with presence validation rules are mandatory. This way we can
simplify the way we obtain required fields, using `required_attribute?`.
Otherwise, fields having an `unless` condition in their presence
validation rules would count as mandatory even when they're not.
