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InfoExtractorTest.py
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import os
import unittest
from coala_quickstart.info_extraction.Info import Info
from coala_quickstart.info_extraction.InfoExtractor import InfoExtractor
from tests.TestUtilities import generate_files
class InfoExtractorTest(unittest.TestCase):
def setUp(self):
self.current_dir = os.getcwd()
class DummyInfo(Info):
description = 'Some dummy information with no meaning.'
class AnotherDummyInfo(Info):
description = 'Another such information.'
class DummyInfoExtractor(InfoExtractor):
spec_references = ['some/dummy/link', 'another/dummy/link']
def parse_file(self, fname, file_content):
return file_content
def find_information(self, fname, parsed_file):
return [DummyInfo(
fname,
'Dummy information it is!')]
class DummyMultiInfoExtractor(InfoExtractor):
def parse_file(self, fname, file_content):
return file_content
def find_information(self, fname, parsed_file):
return [
DummyInfo(
fname,
'Dummy information it is!'),
DummyInfo(
fname,
'Same kind of dummy information it is!'),
AnotherDummyInfo(
fname,
'Another kind of dummy information!!')]
class NoInfoExtractor(InfoExtractor):
def parse_file(self, fname, file_content):
return file_content
def find_information(self, fname, parsed_file):
return []
class WrongSupportedInfoExtractor(InfoExtractor):
supported_file_globs = ("**",)
supported_info_kinds = (DummyInfoExtractor,)
def parse_file(self, fname, file_content):
return file_content
def find_information(self, fname, parsed_file):
# The extractor returns AnotherDummyInfo instead
# of DummyInfo.
return [AnotherDummyInfo(
fname,
'Some random information it is!')]
class TempfileExtractor(InfoExtractor):
supported_file_globs = ("tempfile**", "**tempfile")
def parse_file(self, fname, file_content):
return file_content
def find_information(self, fname, parsed_file):
return [DummyInfo(
fname,
'Some random information it is!')]
self.DummyInfo = DummyInfo
self.DummyInfoExtractor = DummyInfoExtractor
self.DummyMultiInfoExtractor = DummyMultiInfoExtractor
self.NoInfoExtractor = NoInfoExtractor
self.TempfileExtractor = TempfileExtractor
self.WrongSupportedInfoExtractor = WrongSupportedInfoExtractor
def test_implementation(self):
uut = InfoExtractor(
['**'],
self.current_dir)
self.assertRaises(NotImplementedError, uut.parse_file, 'foo', '')
self.assertRaises(
NotImplementedError,
uut.find_information,
'some_filename',
'some_parsed_file')
def test_multiple_target_globs(self):
target_filenames = [
'target_file_1',
'target_file_2',
'another_target_file']
target_file_contents = ['Some content.', 'Any content', 'More content']
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_files:
uut = self.DummyInfoExtractor(
['target_file_**', 'another_target_file'],
self.current_dir)
extracted_info = uut.extract_information()
self.assertEqual(len(extracted_info.keys()), len(target_filenames))
self.assertEqual(extracted_info, uut.information)
for tf in target_filenames:
self.assertEqual(len(extracted_info[tf]['DummyInfo']), 1)
self.assertIsInstance(
extracted_info[tf]['DummyInfo'][0],
self.DummyInfo)
self.assertEqual(
extracted_info[tf]['DummyInfo'][0].source, tf)
# test if the extractor field is added automatically
self.assertIsInstance(
extracted_info[tf]['DummyInfo'][0].extractor,
InfoExtractor)
def test_multiple_information(self):
target_filenames = ['target_file_1', ]
target_file_contents = ['Some content.']
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_files:
uut = self.DummyMultiInfoExtractor(
['target_file_**', 'another_target_file'],
self.current_dir)
extracted_info = uut.extract_information()
self.assertEqual(len(extracted_info.keys()), len(target_filenames))
self.assertEqual(extracted_info, uut.information)
for tf in target_filenames:
self.assertEqual(len(extracted_info[tf]), 2)
self.assertEqual(len(extracted_info[tf]['DummyInfo']), 2)
self.assertIsInstance(
extracted_info[tf]['DummyInfo'][1],
self.DummyInfo)
self.assertEqual(len(extracted_info[tf]['AnotherDummyInfo']), 1)
self.assertIsInstance(
extracted_info[tf]['DummyInfo'][0],
self.DummyInfo)
def test_no_information_found(self):
target_filenames = ['target_file_1', ]
target_file_contents = ['Some content.']
uut = self.NoInfoExtractor(
['target_file_**', 'another_target_file'],
self.current_dir)
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_files:
extracted_info = uut.extract_information()
self.assertEqual(len(extracted_info.keys()), 0)
self.assertEqual(extracted_info, uut.information)
for tf in target_filenames:
self.assertIsNone(extracted_info.get(tf))
def test_filemname_field(self):
class TestInfoExtractor(InfoExtractor):
def parse_file(self, fname, file_content):
assert os.path.exists(fname) == 1
def find_information(self, fname, parsed_file):
return []
target_filenames = ['target_file_1']
target_file_contents = ['Some content.']
uut = TestInfoExtractor(
['target_file_**'],
self.current_dir)
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_file:
uut.extract_information()
def test_unsupported_files(self):
target_filenames = ['tempfile1', '1tempfile', 'tmpfile_not_allowed']
target_file_contents = ['Some content.', 'More content', 'Content']
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_files:
with self.assertRaisesRegexp(
ValueError,
("The target file tmpfile_not_allowed does not match the "
"supported file globs \('tempfile\*\*', '\*\*tempfile'\) "
"of TempfileExtractor")):
uut = self.TempfileExtractor(
['tempfile1', 'tmpfile_not_allowed'],
self.current_dir)
uut.extract_information()
uut = self.TempfileExtractor(
['**tempfile**'],
self.current_dir)
extracted_info = uut.extract_information()
self.assertEqual(len(extracted_info.keys()), 2)
uut = self.TempfileExtractor(
['tempfile1', 'tempfile_not_present'],
self.current_dir)
extracted_info = uut.extract_information()
self.assertEqual(len(extracted_info.keys()), 1)
def test_supported_info_kinds(self):
target_filenames = ['target_file_1', ]
target_file_contents = ['Some content.']
with generate_files(
target_filenames,
target_file_contents,
self.current_dir) as gen_files:
uut = self.WrongSupportedInfoExtractor(
['target_file_**'],
self.current_dir)
with self.assertRaisesRegexp(
ValueError,
("The class AnotherDummyInfo is not present in supported "
"information kinds of WrongSupportedInfoExtractor")):
uut.extract_information()
def test_spec_references_filed(self):
uut = self.DummyInfoExtractor
self.assertEqual(len(uut.spec_references), 2)
self.assertEqual(
uut.spec_references,
['some/dummy/link', 'another/dummy/link'])
uut = self.DummyMultiInfoExtractor
self.assertEqual(uut.spec_references, [])