Avoid line continuations without parentheses. (#138)
Avoid line continuations without parentheses. (#138)

This causes unexpected behaviour: The `not_to` spec will always pass,
whilst the `to include` specs don't test for the presence of the command
line, rather nothing. This is because Ruby treats the `include` as having no
argument and the string below as a string literal.

If we wrap in parentheses, the positive spec fails as the path is
relative to the root partition.

The solution here is to provide a full path when comparing
`gemfile='...'`. This also fixes a broken expectation where `not_to` and
`to` were flipped.
thoughtbot/appraisal