old_contents: try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  
  setup(
      name='arrow',
      version='0.4.2',
      description='Better dates and times for Python',
      url='http://crsmithdev.com/arrow',
      author='Chris Smith',
      author_email="crsmithdev@gmail.com",
      license='Apache 2.0',
      packages=['arrow'],
      zip_safe=False,
      install_requires=[
          'python-dateutil'
      ]
  )
  
  
new_contents: try:
      from setuptools import setup
  except ImportError:
      from distutils.core import setup
  
  setup(
      name='arrow',
      version='0.4.2',
      description='Better dates and times for Python',
      url='http://crsmithdev.com/arrow',
      author='Chris Smith',
      author_email="crsmithdev@gmail.com",
      license='Apache 2.0',
      packages=['arrow'],
      zip_safe=False,
      install_requires=[
          'python-dateutil'
      ],
      test_suite="tests",
  )
  
  
subject: Declare the tests in the setup.py allowing to run ``python setup.py test``