Minitest: Integration test, Template pattern and NotImplementedError

Question

Suppose I have the following class:

class AbstractClass
  # code omitted

  def get_from_api(data)
    APIRequestClass.send_request(config_info: config_info(data))
  end

  # force subclass to add method w/ proper config hash
  def config_info(data)
    raise NotImplementedError
  end
end

I want to write an integration test that submits a request to the API. However, I need to define config_info to do this. Here is one of my attempts at making this work:

# abstract_class_test.rb
# once this works I would remove class declaration to helper file
require_relative '../test_setup'

class SpecificClass < AbstractClass
  def config_info(data)
    {
      sample: "Foo",
      data:   data
    }
  end
end


class AbstractClassTests < MiniTest::Test

  def setup
    @instance = SpecificClass.new
  end

  def test_that_something_comes_back_from_api
    puts @instance.config_info("data")
    response = @instance.get_from_api("data")

    assert_equal jobs.class, Array
  end

end

The puts statement is resulting in a NotImplementedError.

• Is there a better way to write an integration test in this instance (i.e. not defining a SpecificClass)?

• Why isn't SpecificClass' implementation of config_info in the method lookup path?

• Is there a better way to force the end user to provide the configuration information needed to make the API request?

For now I'll simply test the APIRequestClass.send_request method and pass in the appropriate hash. I'm still very interested in the questions I asked above, but perhaps a fourth question is: is there a significant advantage in testing this functionality all the way from AbstractClass, versus simply testing it from APIRequestClass?