old_contents: # MIT License
  # Copyright (c) 2017 MassChallenge, Inc.
  
  from pytz import utc
  from datetime import (
      datetime,
      timedelta,
  )
  
  
  def days_from_now(days):
      return utc.localize(datetime.now() + timedelta(days))
  
  
  def months_from_now(months):
      return days_from_now(months * 30)
  
  
  def match_errors(data, errors):
      for key, value in data.items():
          found = False
          for error in errors:
              if key in error and value in error:
                  found = True
          if not found:
              return False
      return True
  
  
  def find_events(history, event_type):
      return [event for event in history
              if event["event_type"] == event_type]
  
  
  def assert_fields(fields, data):
      for field in fields:
          assert field in data, "%s missing" % field
  
  
  def assert_fields_missing(fields, data):
      for field in fields:
          assert field not in data, "%s present" % field
  
  
  def assert_fields_required(fields, data):
      for field in fields:
          assert("required" in data[field],
                 "Expected %s to be required" % field)
  
  
  def assert_fields_not_required(fields, data):
      for field in fields:
          assert("required" not in data[field],
                 "Expected %s to not be required" % field)
  
new_contents: # MIT License
  # Copyright (c) 2017 MassChallenge, Inc.
  
  from pytz import utc
  from datetime import (
      datetime,
      timedelta,
  )
  
  
  def days_from_now(days):
      return utc.localize(datetime.now() + timedelta(days))
  
  
  def months_from_now(months):
      return days_from_now(months * 30)
  
  
  def match_errors(data, errors):
      for key, value in data.items():
          found = False
          for error in errors:
              if key in error and value in error:
                  found = True
          if not found:
              return False
      return True
  
  
  def find_events(history, event_type):
      return [event for event in history
              if event["event_type"] == event_type]
  
  
  def assert_fields(fields, data):
      for field in fields:
          assert field in data, "%s missing" % field
  
  
  def assert_fields_missing(fields, data):
      for field in fields:
          assert field not in data, "%s present" % field
  
  
  def assert_fields_required(fields, data):
      for field in fields:
          error_msg = "Expected %s to be required" % field
          assert "required" in data[field], error_msg
  
  
  def assert_fields_not_required(fields, data):
      for field in fields:
          error_msg = "Expected %s to not be required" % field
          assert "required" not in data[field], error_msg
  
subject: Fix assert call