text: import pytest
  from thefuck.rules.brew_install import match, get_new_command
  from thefuck.rules.brew_install import brew_formulas
  from tests.utils import Command
  
  
  @pytest.fixture
  def brew_no_available_formula():
      return '''Error: No available formula for elsticsearch '''
  
  
  @pytest.fixture
  def brew_install_no_argument():
      return '''This command requires a formula argument'''
  
  
  @pytest.fixture
  def brew_already_installed():
      return '''Warning: git-2.3.5 already installed'''
  
  
  def _is_not_okay_to_test():
      if 'elasticsearch' not in brew_formulas:
          return True
      return False
  
  
  @pytest.mark.skipif(_is_not_okay_to_test(),
                      reason='No need to run if there\'s no formula')
  def test_match(brew_no_available_formula, brew_already_installed,
                 brew_install_no_argument):
      assert match(Command('brew install elsticsearch',
                           stderr=brew_no_available_formula), None)
      assert not match(Command('brew install git',
                               stderr=brew_already_installed), None)
      assert not match(Command('brew install', stderr=brew_install_no_argument),
                       None)
  
  
  @pytest.mark.skipif(_is_not_okay_to_test(),
                      reason='No need to run if there\'s no formula')
  def test_get_new_command(brew_no_available_formula):
      assert get_new_command(Command('brew install elsticsearch',
                                     stderr=brew_no_available_formula), None)\
          == 'brew install elasticsearch'
  
      assert get_new_command(Command('brew install aa',
                                     stderr=brew_no_available_formula),
                             None) != 'brew install aha'
  