import unittest, boto, os
from bucketeer import commit

class BuckeeterTest(unittest.TestCase):

  global existing_bucket, test_dir
  existing_bucket = 'bucket.exists'
  test_dir = 'bucketeer_test_dir'

  def setUp(self):
    # Create a bucket to test on existing bucket
    connection = boto.connect_s3()
    bucket = connection.create_bucket(existing_bucket)

    # Create directory to house test files
    os.makedirs(test_dir)

    return

  def tearDown(self):
    # Remove bucket created to test on existing bucket
    connection = boto.connect_s3()
    bucket = connection.delete_bucket(existing_bucket)

    # Remove directory created to house test files
    os.rmdir(test_dir)

    return

  def testMain(self):
    self.assertTrue(commit)

if __name__ == '__main__':
  unittest.main()

import unittest, boto, os
from bucketeer import commit

class BuckeeterTest(unittest.TestCase):

  global existing_bucket, test_dir, test_file
  existing_bucket = 'bucket.exists'
  test_dir = 'bucketeer_test_dir'
  test_file = 'bucketeer_test_file'

  def setUp(self):
    # Create a bucket to test on existing bucket
    connection = boto.connect_s3()
    bucket = connection.create_bucket(existing_bucket)

    # Create directory to house test files
    os.makedirs(test_dir)
    # Create test file
    open(test_dir + '/' + test_file, 'w').close()

    return

  def tearDown(self):
    # Remove bucket created to test on existing bucket
    connection = boto.connect_s3()
    bucket = connection.delete_bucket(existing_bucket)

    # Remove test file
    os.remove(test_dir + '/' + test_file)

    # Remove directory created to house test files
    os.rmdir(test_dir)

    return

  def testMain(self):
    self.assertTrue(commit)

if __name__ == '__main__':
  unittest.main()

Add create and remove file for setUp and tearDown