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# -*- coding: utf-8 -*-
"""Shared test case."""
from __future__ import unicode_literals
import os
import sys
import unittest
from dtfabric import reader
from dtfabric import registry
def skipUnlessHasTestFile(path_segments): # pylint: disable=invalid-name
"""Decorator to skip a test if the test file does not exist.
Args:
path_segments (list[str]): path segments inside the test data directory.
Returns:
function: to invoke.
"""
fail_unless_has_test_file = getattr(
unittest, 'fail_unless_has_test_file', False)
path = os.path.join('test_data', *path_segments)
if fail_unless_has_test_file or os.path.exists(path):
return lambda function: function
if sys.version_info[0] < 3:
path = path.encode('utf-8')
# Note that the message should be of type str which is different for
# different versions of Python.
return unittest.skip('missing test file: {0:s}'.format(path))
class BaseTestCase(unittest.TestCase):
"""The base test case."""
_TEST_DATA_PATH = os.path.join(os.getcwd(), 'test_data')
# Show full diff results, part of TestCase so does not follow our naming
# conventions.
maxDiff = None
def _CreateDefinitionRegistryFromFile(self, path):
"""Creates a data type definition registry from a file.
Args:
path (str): path to the data definition file.
Returns:
DataTypeDefinitionsRegistry: data type definition registry or None
on error.
"""
definitions_registry = registry.DataTypeDefinitionsRegistry()
self._FillDefinitionRegistryFromFile(definitions_registry, path)
return definitions_registry
def _FillDefinitionRegistryFromFile(self, definitions_registry, path):
"""Fills a data type definition registry from a file.
Args:
definitions_registry (DataTypeDefinitionsRegistry): data type definitions
registry.
path (str): path to the data definition file.
"""
definitions_reader = reader.YAMLDataTypeDefinitionsFileReader()
with open(path, 'rb') as file_object:
definitions_reader.ReadFileObject(definitions_registry, file_object)
def _GetTestFilePath(self, path_segments):
"""Retrieves the path of a test file in the test data directory.
Args:
path_segments (list[str]): path segments inside the test data directory.
Returns:
str: path of the test file.
"""
# Note that we need to pass the individual path segments to os.path.join
# and not a list.
return os.path.join(self._TEST_DATA_PATH, *path_segments)
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