fixup! Add a smoke test to make sure fixtures are not included

Author: pirj

example_app_generator/generate_stuff.rb

@@ -44,6 +44,7 @@ def setup_tasks
 
     def final_tasks
       copy_file 'spec/verify_no_active_record_spec.rb'
+      copy_file 'spec/verify_no_fixture_setup_spec.rb'
     end
 
     def skip_active_record?

example_app_generator/no_active_record/spec/verify_no_fixture_setup_spec.rb

@@ -0,0 +1,22 @@
+# Pretend that ActiveRecord::Rails is defined and this doesn't blow up
+# with `config.use_active_record = false`.
+# Trick the other spec that checks that ActiveRecord is
+# *not* defined by wrapping it in RSpec::Rails namespace
+# so that it's reachable from RSpec::Rails::FixtureSupport.
+# NOTE: this has to be defined before requiring `rails_helper`.
+module RSpec
+  module Rails
+    module ActiveRecord
+      module TestFixtures
+      end
+    end
+  end
+end
+
+require 'rails_helper'
+
+RSpec.describe 'Example App', :use_fixtures, type: :model do
+  it "does not set up fixtures" do
+    expect(defined?(fixtures)).not_to be
+  end
+end