Rails Fixtures Test

fixture_test.rb

# Test validity of all your fixtures in one simple test.
# Just put this file somewhere, like maybe `test/models`, and run `bin/rails test test/models/fixture_test.rb`.
# Even gives you the line number of the fixture definition in the failure message!

require 'test_helper'

class FixturesTest < ActiveSupport::TestCase
  Dir.glob(Rails.root.join('test', 'fixtures', '*.yml')).each do |filename|
    set_name = File.basename(filename, '.yml')

    test "#{set_name} fixtures are valid" do
      ActiveRecord::FixtureSet.all_loaded_fixtures[set_name].each do |fixture_name, fixture|
        value = fixture.find
        unless value.valid?
          line_number = File.read(filename).each_line.find_index { |l| l.chomp.match?(/\A#{fixture_name}:\z/) } + 1
          fail "#{filename}:#{line_number}: #{value.errors.full_messages.to_sentence}"
        end
      end
    end
  end
end