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# This defines the functions that implement each step. Functions
# return either a saga.Success or a saga.Failure object. These are
# subclasses of dict, and the runner generated by Saga will abort if a
# step returns failure. Either dict may contain arbitrary fields.
#
# For simplicity, the runner will capture exceptions, and treats them
# as failures with the exception stored within it. Also, it treats a
# None return value as success with no keys.
#
# Values may be saved in named variables with the saga.set_variable
# function and retrieved with the saga.get_variable function. It's an
# error to retrieve an unset variable.
import os
import saga
# This either returns None or raises an exception.
def create_empty_git_repository():
subprocess.check-call(['git', 'init', '.'], stderr=subprocess.STDOUT)
# This either returns None or raises an exception.
def only_filename(filename):
assert os.listdir('.') == [filename]
# This run jt, with the --date= option that tells jt to pretend the
# current date is as given. The runner sets PATH to have the source
# directory of the project being tested.
def run_jt(cmd):
prefix = 'jt '
assert cmd.startswith(prefix)
args = cmd[len(prefix:)]
date = saga.get_variable('date')
shellcmd = "jt --date={} {}".format(date, args)
exitcode, output = subprocess.getstatusoutput(
['sh', '-c', shellcmd], stderr=subprocess.STDOUT)
# We always return success, and expect the result to be checked by
# a later step.
return saga.Success(exitcode=exitcode, output=output)
def exists(filename):
assert os.path.exists(filename)
def file_contains(filename, text):
content = open(filename).read()
assert text in content
def shell_command_failed(captured_result=None):
exitcode = captured['exitcode']
assert exitcode == 0
def stderr_contains(error, captured_result=None):
stderr = captured_result['stderr']
assert error in stderr
# These need to be passed to jt somehow, not sure how. That's not
# important for now.
def set_date(date):
saga.save_variable('date', date)
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