old_contents: #
  # This file is part of Gruvi. Gruvi is free software available under the
  # terms of the MIT license. See the file "LICENSE" that was provided
  # together with this source file for the licensing terms.
  #
  # Copyright (c) 2012-2014 the Gruvi authors. See the file "AUTHORS" for a
  # complete list.
  
  from __future__ import absolute_import, print_function
  
  import os
  import sys
  
  from argparse import ArgumentParser
  
  if sys.version_info[:2] >= (2,7):
      from unittest import TestLoader, TextTestRunner
  else:
      from unittest2 import TestLoader, TextTestRunner
  
  
  parser = ArgumentParser()
  parser.add_argument('suite', help='the test suite to run',
                       choices=('unit', 'performance', 'memory', 'documentation'))
  args = parser.parse_args()
  suite = args.suite
  
  # Change directory to tests/ irrespective of where we're called from.
  topdir = os.path.split(os.path.abspath(__file__))[0]
  testdir = os.path.join(topdir, 'tests')
  os.chdir(testdir)
  
  # If running under tox, replace the entry for the current directory on sys.path
  # with the test directory. This prevents the tox runs from running in the
  # potentially unclean environment from the checkout our source tree.
  # Otherwise, if not running under tox, we want the option to run from the
  # current directory, so we add the test directory instead.
  if os.environ.get('TOX') == 'yes':
      sys.path[0] = testdir
  else:
      sys.path.insert(0, testdir)
  
  from support import *
  
  if suite == 'unit':
      pattern = 'test_*.py'
  elif suite == 'performance':
      pattern = 'perf_*.py'
      PerformanceTest.setup_loader()
      PerformanceTest.start_new_results()
  elif suite == 'memory':
      pattern = 'memory.py'
      MemoryTest.setup_loader()
      MemoryTest.start_new_results()
  elif suite == 'documentation':
      pattern = 'documentation.py'
  
  loader = TestLoader()
  tests = loader.discover('.', pattern)
  
  runner = TextTestRunner(verbosity=1, buffer=False)
  result = runner.run(tests)
  if result.errors or result.failures:
      sys.exit(1)
  
new_contents: #
  # This file is part of Gruvi. Gruvi is free software available under the
  # terms of the MIT license. See the file "LICENSE" that was provided
  # together with this source file for the licensing terms.
  #
  # Copyright (c) 2012-2014 the Gruvi authors. See the file "AUTHORS" for a
  # complete list.
  
  from __future__ import absolute_import, print_function
  
  import os
  import sys
  
  from argparse import ArgumentParser
  
  if sys.version_info[:2] >= (2,7):
      from unittest import TestLoader, TextTestRunner, TestSuite
  else:
      from unittest2 import TestLoader, TextTestRunner, TestSuite
  
  
  parser = ArgumentParser()
  parser.add_argument('-v', '--verbose', help='be more verbose', action='store_true')
  parser.add_argument('-f', '--failfast', help='stop on first failure', action='store_true')
  parser.add_argument('-b', '--buffer', help='buffer stdout and stderr', action='store_true')
  parser.add_argument('suite', nargs='+', help='name of test suite to run', metavar='suite',
                      choices=('unit', 'performance', 'memory', 'documentation'))
  args = parser.parse_args()
  
  # Change directory to tests/ irrespective of where we're called from.
  topdir = os.path.split(os.path.abspath(__file__))[0]
  testdir = os.path.join(topdir, 'tests')
  os.chdir(testdir)
  
  # If running under tox, replace the entry for the current directory on sys.path
  # with the test directory. This prevents the tox runs from running in the
  # potentially unclean environment from the checkout our source tree.
  # Otherwise, if not running under tox, we want the option to run from the
  # current directory, so we add the test directory instead.
  if os.environ.get('TOX') == 'yes':
      sys.path[0] = testdir
  else:
      sys.path.insert(0, testdir)
  
  from support import *
  
  suite = TestSuite()
  
  for name in args.suite:
      if name == 'unit':
          pattern = 'test_*.py'
      elif name == 'performance':
          pattern = 'perf_*.py'
          PerformanceTest.setup_loader()
          PerformanceTest.start_new_results()
      elif name == 'memory':
          pattern = 'memory.py'
          MemoryTest.setup_loader()
          MemoryTest.start_new_results()
      elif name == 'documentation':
          pattern = 'documentation.py'
      loader = TestLoader()
      tests = loader.discover('.', pattern)
      suite.addTest(tests)
  
  verbosity = 2 if args.verbose else 1
  runner = TextTestRunner(verbosity=verbosity, buffer=args.buffer, failfast=args.failfast)
  result = runner.run(suite)
  if result.errors or result.failures:
      sys.exit(1)
  
subject: allow specification of multiple suites