old_contents: import os
  import logging
  import sys
  import tempfile
  
  from setuptools import setup, find_packages
  
  
  def readme():
    """Use `pandoc` to convert `README.md` into a `README.rst` file."""
    if os.path.isfile('README.md') and any('dist' in x for x in sys.argv[1:]):
      if os.system('pandoc -s README.md -o %s/README.rst' %
                   tempfile.mkdtemp()) != 0:
        logging.warning('Unable to generate README.rst')
    if os.path.isfile('README.rst'):
      with open('README.rst') as fd:
        return fd.read()
    return ''
  
  
  setup(
      name='grpcio-opentracing',
      version='1.0',
      description='Python OpenTracing Extensions for gRPC',
      long_description=readme(),
      author='LightStep',
      license='',
      install_requires=['opentracing>=1.2.2', 'grpcio>=1.1.3', 'six>=1.10'],
      setup_requires=['pytest-runner'],
      tests_require=['pytest'],
      keywords=['opentracing'],
      classifiers=[
          'Operating System :: OS Independent',
          'Programming Language :: Python :: 2.7',
      ],
      packages=find_packages(exclude=['docs*', 'tests*', 'examples*']))
  
new_contents: import os
  import logging
  import sys
  import tempfile
  
  from setuptools import setup, find_packages
  
  
  def readme():
    """Use `pandoc` to convert `README.md` into a `README.rst` file."""
    if os.path.isfile('README.md') and any('dist' in x for x in sys.argv[1:]):
      if os.system('pandoc -s README.md -o %s/README.rst' %
                   tempfile.mkdtemp()) != 0:
        logging.warning('Unable to generate README.rst')
    if os.path.isfile('README.rst'):
      with open('README.rst') as fd:
        return fd.read()
    return ''
  
  
  setup(
      name='grpcio-opentracing',
      version='1.0',
      description='Python OpenTracing Extensions for gRPC',
      long_description=readme(),
      author='LightStep',
      license='',
      install_requires=['opentracing>=1.2.2', 'grpcio>=1.1.3', 'six>=1.10'],
      setup_requires=['pytest-runner'],
      tests_require=['pytest', 'future'],
      keywords=['opentracing'],
      classifiers=[
          'Operating System :: OS Independent',
          'Programming Language :: Python :: 2.7',
      ],
      packages=find_packages(exclude=['docs*', 'tests*', 'examples*']))
  
subject: Add missing test dependency.