Don't load AR integration if it is unavailable #188
Merged
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When writing tests for a project that uses certain parts of Rails, it should still be possible to say
require "super_diff/rails"
, and SuperDiff should only load the integrations that correspond to the available parts. Right now the only two integrations are ActiveSupport and ActiveRecord. ActiveSupport should always be available, but ActiveRecord may not be available, so this commit adds a guard around that integration in particular. It also adds tests for Combustion so we can test that this guard specifically works for engines where ActiveRecord is not being loaded.