Add initial models and corresponding test files

spec/rails_helper.rb

@@ -0,0 +1,48 @@
+# This file is copied to spec/ when you run 'rails generate rspec:install'
+ENV["RAILS_ENV"] ||= 'test'
+require 'spec_helper'
+require File.expand_path("../../config/environment", __FILE__)
+require 'rspec/rails'
+require 'shoulda/matchers'
+
+# Requires supporting ruby files with custom matchers and macros, etc, in
+# spec/support/ and its subdirectories. Files matching `spec/**/*_spec.rb` are
+# run as spec files by default. This means that files in spec/support that end
+# in _spec.rb will both be required and run as specs, causing the specs to be
+# run twice. It is recommended that you do not name files matching this glob to
+# end with _spec.rb. You can configure this pattern with with the --pattern
+# option on the command line or in ~/.rspec, .rspec or `.rspec-local`.
+Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
+
+# Checks for pending migrations before tests are run.
+# If you are not using ActiveRecord, you can remove this line.
+ActiveRecord::Migration.maintain_test_schema!
+
+RSpec.configure do |config|
+  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
+  config.fixture_path = "#{::Rails.root}/spec/fixtures"
+
+  # If you're not using ActiveRecord, or you'd prefer not to run each of your
+  # examples within a transaction, remove the following line or assign false
+  # instead of true.
+  config.use_transactional_fixtures = true
+
+  # RSpec Rails can automatically mix in different behaviours to your tests
+  # based on their file location, for example enabling you to call `get` and
+  # `post` in specs under `spec/controllers`.
+  #
+  # You can disable this behaviour by removing the line below, and instead
+  # explicitly tag your specs with their type, e.g.:
+  #
+  #     RSpec.describe UsersController, :type => :controller do
+  #       # ...
+  #     end
+  #
+  # The different available types are documented in the features, such as in
+  # https://relishapp.com/rspec/rspec-rails/docs
+  config.infer_spec_type_from_file_location!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+end