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# -*- coding: utf-8 -*- IGNORE:C0111
from __future__ import absolute_import, print_function, unicode_literals
import logging
import yamlish
try:
import unittest2 as unittest
except ImportError:
import unittest
import yaml
import tempfile
import textwrap
from textwrap import dedent
INPUT = 1
OUTPUT = 2
def _generate_test_name(source):
"""
Clean up human-friendly test name into a method name.
"""
out = source.replace(' ', '_').replace(':', '').replace(',', '').lower()
return "test_%s" % out
def _create_input_test(test_src, tested_function):
"""
Decorate tested function to be used as a method for TestCase.
"""
def do_test_expected(self):
"""
Execute a test by calling a tested_function on test_src data.
"""
self.maxDiff = None
got = ""
if 'error' in test_src:
self.assertRaises(test_src['error'], tested_function,
test_src['in'])
else:
want = test_src['out']
got = tested_function(test_src['in'])
logging.debug("test_src['out'] = %s", unicode(test_src['out']))
self.assertEqual(got, want, """Result matches
expected = %s
observed = %s
""" % (want, got))
return do_test_expected
def _create_output_test(test_src, tested_function):
"""
Decorate tested function to be used as a method for TestCase.
"""
def do_test_expected(self):
"""
Execute a test by calling a tested_function on test_src data.
"""
self.maxDiff = None
# We currently don't throw any exceptions in Writer, so this
# this is always false
if 'error' in test_src:
self.assertRaises(test_src['error'], yamlish.dumps, test_src['in'])
else:
logging.debug("out:\n%s", textwrap.dedent(test_src['out']))
want = yaml.load(textwrap.dedent(test_src['out']))
logging.debug("want:\n%s", want)
with tempfile.NamedTemporaryFile() as test_file:
tested_function(test_src['in'], test_file)
test_file.seek(0)
got_str = test_file.read()
logging.debug("got_str = %s", got_str)
got = yaml.load(got_str)
self.assertEqual(got, want, "Result matches")
return do_test_expected
def generate_testsuite(test_data, test_case_shell, test_fce, direction=INPUT):
"""
Generate tests from the test data, class to build upon and function to use for testing.
"""
for in_test in test_data:
if ('skip' in in_test) and in_test['skip']:
logging.debug("test %s skipped!", in_test['name'])
continue
name = _generate_test_name(in_test['name'])
if direction == INPUT:
test_method = _create_input_test (in_test, test_fce)
elif direction == OUTPUT:
test_method = _create_output_test(in_test, test_fce)
test_method.__name__ = str('test_%s' % name) # IGNORE:W0622
setattr (test_case_shell, test_method.__name__, test_method)
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