Automatically creates unit test files using "rake generate:test NAME=test_name and puts them in the test/ directory

Rakefile

namespace :generate do

  desc "Add new Unit Test file"
  task :test do
    unless ENV.has_key?('NAME')
      raise "Must specify a unit test file name, e.g., rake generate:test NAME=test_name"
    end

    unit_test_path = "test/" + ENV['NAME'].downcase + "_test.rb"

    if File.exist?(unit_test_path)
      raise "ERROR: Test file '#{unit_test_path}' already exists."
    end

    puts "Creating #{unit_test_path}"
    File.open(unit_test_path, 'w+') do |f|
      f.write("require 'test_helper'\n\n")
      f.write("# Rename the test class\n")
      f.write("class TestNameOfTest < Minitest::Test\n\n")
      f.write("end")
    end
  end

end