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
This is a very subtle behaviour: `match /attachment/i` could represent a
regular expression, but it could also represent a division like
`match / attachment / i`. So we need to make an exception to the usual
way we omit parenthesis in RSpec expectations.
The `type: :feature` is automatically detected by RSpec because these
tests are inside the `spec/features` folder. Using `feature` re-adds a
`type: :feature` to these files, which will result in a conflict when we
upgrade to Rails 5.1's system tests.
Because of this change, we also need to change `background` to `before`
or else these tests will fail.
Why:
User with an empty email value (nil) should not appear in the recipient
list for a given UserSegment at Newsletters or Email Downloads.
How:
Using Enumerable#compact and Enumerable#select to filter out empty emails
Increasing Email Download feature spec and Newsletter model spec to cover
all possible scenarios including the nil email one.
