Error during testing in rails - ruby-on-rails

Question

I am trying to run a unit test.
The test needs to have require_relative 'francis'
require 'minitest/autorun'
require_relative 'francis'
class FrancisTest < MiniTest::Test
When I try running rake test TEST=test/francis_test.rb I get an error of
(in C:/Users/chris2/Documents/RailsProjects/francis)
rake aborted!
LoadError: cannot load such file -- C:/Users/chris2/Documents/RailsProjects/francis/test/francis
C:/Users/chris2/Documents/RailsProjects/francis/test/francis_test.rb:2:in `require_relative'
C:/Users/chris2/Documents/RailsProjects/francis/test/francis_test.rb:2:in `<top (required)>'
Tasks: TOP => test:single
(See full trace by running task with --trace)
How can I run this test?
Update
I moved francis_test.rb to the root of the project. I also remarked out the require_relative statement., I also had to change the setup line to #teen = ::Franci.new instead of Francis.new
So the beginning of francis_test looks like
require 'minitest/autorun'
# require_relative 'franci'
require 'test_helper'
class FrancisTest < MiniTest::Test
attr_reader :teen
def setup
#teen = ::Franci.new
end
def test_stating
assert_equal 'Whatevs.', teen.yo('Oh blah di, oh blah da.')
end
def test_yelling
assert_equal 'Chill!', teen.yo('GOOOAAAALLL!')
end
I seem to need require 'test_helper'.
BTW - my ruby and rails versions are
Rails 4.2.5.1
ruby 2.2.4p230 (2015-12-16 revision 53155) [i386-mingw32]
Now if I run rake test TEST=francis_test.rb -v
I see (partial)
# Running:
FrancisTest#test_stating_with_acronyms = 0.01 s = E
FrancisTest#test_inquiring = 0.00 s = E
FrancisTest#test_question_with_just_numbers = 0.00 s = E
. . .
Finished in 0.013518s, 1257.5400 runs/s, 0.0000 assertions/s.
1) Error:
FrancisTest#test_stating_with_acronyms:
ArgumentError: wrong number of arguments (1 for 0)
2) Error:
FrancisTest#test_inquiring:
ArgumentError: wrong number of arguments (1 for 0)
A couple of questions
is attr_reader valid in Ruby 2.2.4? I looked at the API but couldn't quite make sense of it.
Why am I getting 'wrong number of arguments'? I haven't used the attr_reader but it seems that when calling it the way I am, it should be passing the argument to teen.yo.
BTW - the francis table only has one column - 'yo'.

Answer 1

require_relative complements the builtin method require by allowing you to load a file that is relative to the file containing the require_relative statement.
For example, if you have unit test classes in the "test" directory, and data for them under the test "test/data" directory, then you might use a line like this in a test case:
require_relative "data/customer_data_1"

Answer 2

is attr_reader valid in Ruby 2.2.4? I looked at the API but couldn't
quite make sense of it.
Yes, it is. However you don't need it because columns are automatically made available as attributes by ActiveRecord.
Why am I getting 'wrong number of arguments'? I haven't used the
attr_reader but it seems that when calling it the way I am, it should
be passing the argument to teen.yo.
To answer this question, I need the content of your francis.rb file.