test_autotest_integration.rb

require File.expand_path('test/helper')
require 'autotest'
require 'shoulda'

class TestAutotestIntegration < Test::Unit::TestCase
  def temp_dir
    "#{File.dirname(__FILE__)}/tmp"
  end

  def autotest_executable
    '../../bin/autotest'
  end

  def run_autotest(flag_string='')
    `cd #{temp_dir} && #{autotest_executable} #{flag_string}`
  end

  def write(file, text)
    file = "#{temp_dir}/#{file}"
    dir = File.dirname(file)
    `mkdir -p #{dir}` unless File.directory?(dir)
    File.open(file, 'w'){|f| f.write text }
  end

  def write_passing_tests times
    write('test/test_x.rb', %{ class TestX < Test::Unit::TestCase; #{times}.times{|i| define_method("test_\#{i}"){ assert true }}; end })
  end

  context 'integration' do
    context 'green run' do
      setup do
        `rm -rf #{temp_dir}`
        `mkdir #{temp_dir}`
        write('.autotest', "Autotest.add_hook(:all_good){print 'all_good';exit}")
      end

      teardown do
        `rm -rf #{temp_dir}`
      end

      should 'do nothing when run inside an empty directory' do
        assert_equal run_autotest, 'all_good'
      end

      should 'runs all tests' do
        write('test/test_x.rb', '')
        assert_match %r{test/test_x.rb}, run_autotest
      end

      should 'include output from tests' do
        write('test/test_x.rb', "print 'YES'")
        assert_match %r{YES}, run_autotest
      end

      should 'show one dot per passing test' do
        write_passing_tests 10
        assert_match %r{[^\.]#{'\.'*10}[^\.]}, run_autotest
      end

      should 'show test summary' do
        write_passing_tests 10
        assert_match /Finished.* in .*10 tests, 10 assertions, 0 failures, 0 errors/m, run_autotest
      end

      should 'call good hooks in correct order' do
        write('.autotest', "Autotest::ALL_HOOKS.each{|hook| Autotest.add_hook(hook){print hook;hook == :all_good ? exit : nil }}")
        write_passing_tests 1
        assert_match /\n#{%w[ran_command green all_good died]*''}$/m, run_autotest
      end

      should 'run with alternate config file location' do
        write('.autotest_alternate', "Autotest.add_hook(:all_good){print 'all_good';exit}")
        assert_equal run_autotest('-r .autotest_alternate'), 'all_good'
      end

      should 'support files with whitespaces' do
        write('test/test_a x.rb', "print 'YES'")
        assert_match %r{YES}, run_autotest
      end

      should 'use given style' do
        write('spec/a_spec.rb', "print 'YES'")
        assert_match %r{YES}, run_autotest('--style rspec2')
      end

      should 'run in parallel' do
        write('test/test_a.rb', "require 'test/unit';print 'YES'")
        write('test/test_b.rb', "require 'test/unit';print 'YEP'")
        result = run_autotest('--parallel')
        assert_match %r{YES}, result
        assert_match %r{YEP}, result
      end

      should 'use a sleep option from .autotest' do
        # speed up autotest to react instantly on save like Guard
        run_autotest("--delay 0")
        a = Autotest.new
        assert_equal a.sleep, 0
      end
    end
  end
end