Custom Minitest Assertion

README.md

Custom Minitest Assertions

It doesn't have to be like this:

-> { ShippingOption.find(shipping_option.id) }.must_raise ActiveRecord::RecordNotFound

I'm aware some feel assert_nothing_raised is an anti-pattern, but I think for finding ActiveRecord models it has value.

http://blog.zenspider.com/blog/2012/01/assert_nothing_tested.html

To me this is just so much nicer:

shipping_option.must_be_destroyed
product.wont_be_destroyed

Full scoop: https://gist.github.com/ordinaryzelig/2032303

record_destroyed.rb

module MiniTest::Assertions

  def assert_destroyed(record)
    assert_raises(ActiveRecord::RecordNotFound) { record.class.find(record.id) }
  end

  def refute_destroyed(record)
    assert_nothing_raised { record.class.find(record.id) }
  end

end

ActiveRecord::Base.infect_an_assertion :assert_destroyed, :must_be_destroyed, :unary
ActiveRecord::Base.infect_an_assertion :refute_destroyed, :wont_be_destroyed, :unary