Test for clean database between specs

clean_database_spec.rb

# spec/clean_database_spec.rb

require 'rails_helper'

describe 'Checking for clean database' do
  specify 'no data to start with' do
    [
      # your model classes
    ].each do |model|
      expect(model.count).to be_zero
    end
  end
end

test_db_clean.sh

# test_db_clean.sh

bundle exec rspec -fd $1
bundle exec rspec -fd spec/clean_database_spec.rb

run all specs with something like:

find spec -name *_spec.rb -exec test_db_clean.sh {} \;