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import six
import unittest
import warnings
from scrapy.settings import Settings, SettingsAttribute, CrawlerSettings
from tests import mock
from . import default_settings
class SettingsAttributeTest(unittest.TestCase):
def setUp(self):
self.attribute = SettingsAttribute('value', 10)
def test_set_greater_priority(self):
self.attribute.set('value2', 20)
self.assertEqual(self.attribute.value, 'value2')
self.assertEqual(self.attribute.priority, 20)
def test_set_equal_priority(self):
self.attribute.set('value2', 10)
self.assertEqual(self.attribute.value, 'value2')
self.assertEqual(self.attribute.priority, 10)
def test_set_less_priority(self):
self.attribute.set('value2', 0)
self.assertEqual(self.attribute.value, 'value')
self.assertEqual(self.attribute.priority, 10)
class SettingsTest(unittest.TestCase):
if six.PY3:
assertItemsEqual = unittest.TestCase.assertCountEqual
def setUp(self):
self.settings = Settings()
@mock.patch.dict('scrapy.settings.SETTINGS_PRIORITIES', {'default': 10})
@mock.patch('scrapy.settings.default_settings', default_settings)
def test_initial_defaults(self):
settings = Settings()
self.assertEqual(len(settings.attributes), 1)
self.assertIn('TEST_DEFAULT', settings.attributes)
attr = settings.attributes['TEST_DEFAULT']
self.assertIsInstance(attr, SettingsAttribute)
self.assertEqual(attr.value, 'defvalue')
self.assertEqual(attr.priority, 10)
@mock.patch.dict('scrapy.settings.SETTINGS_PRIORITIES', {})
@mock.patch('scrapy.settings.default_settings', {})
def test_initial_values(self):
settings = Settings({'TEST_OPTION': 'value'}, 10)
self.assertEqual(len(settings.attributes), 1)
self.assertIn('TEST_OPTION', settings.attributes)
attr = settings.attributes['TEST_OPTION']
self.assertIsInstance(attr, SettingsAttribute)
self.assertEqual(attr.value, 'value')
self.assertEqual(attr.priority, 10)
def test_set_new_attribute(self):
self.settings.attributes = {}
self.settings.set('TEST_OPTION', 'value', 0)
self.assertIn('TEST_OPTION', self.settings.attributes)
attr = self.settings.attributes['TEST_OPTION']
self.assertIsInstance(attr, SettingsAttribute)
self.assertEqual(attr.value, 'value')
self.assertEqual(attr.priority, 0)
def test_set_instance_identity_on_update(self):
attr = SettingsAttribute('value', 0)
self.settings.attributes = {'TEST_OPTION': attr}
self.settings.set('TEST_OPTION', 'othervalue', 10)
self.assertIn('TEST_OPTION', self.settings.attributes)
self.assertIs(attr, self.settings.attributes['TEST_OPTION'])
def test_set_calls_settings_attributes_methods_on_update(self):
with mock.patch.object(SettingsAttribute, '__setattr__') as mock_setattr, \
mock.patch.object(SettingsAttribute, 'set') as mock_set:
attr = SettingsAttribute('value', 10)
self.settings.attributes = {'TEST_OPTION': attr}
mock_set.reset_mock()
mock_setattr.reset_mock()
for priority in (0, 10, 20):
self.settings.set('TEST_OPTION', 'othervalue', priority)
mock_set.assert_called_once_with('othervalue', priority)
self.assertFalse(mock_setattr.called)
mock_set.reset_mock()
mock_setattr.reset_mock()
def test_setdict_alias(self):
with mock.patch.object(self.settings, 'set') as mock_set:
self.settings.setdict({'TEST_1': 'value1', 'TEST_2': 'value2'}, 10)
self.assertEqual(mock_set.call_count, 2)
calls = [mock.call('TEST_1', 'value1', 10),
mock.call('TEST_2', 'value2', 10)]
mock_set.assert_has_calls(calls, any_order=True)
def test_setmodule_only_load_uppercase_vars(self):
class ModuleMock():
UPPERCASE_VAR = 'value'
MIXEDcase_VAR = 'othervalue'
lowercase_var = 'anothervalue'
self.settings.attributes = {}
self.settings.setmodule(ModuleMock(), 10)
self.assertIn('UPPERCASE_VAR', self.settings.attributes)
self.assertNotIn('MIXEDcase_VAR', self.settings.attributes)
self.assertNotIn('lowercase_var', self.settings.attributes)
self.assertEqual(len(self.settings.attributes), 1)
def test_setmodule_alias(self):
with mock.patch.object(self.settings, 'set') as mock_set:
self.settings.setmodule(default_settings, 10)
mock_set.assert_called_with('TEST_DEFAULT', 'defvalue', 10)
def test_setmodule_by_path(self):
self.settings.attributes = {}
self.settings.setmodule(default_settings, 10)
ctrl_attributes = self.settings.attributes.copy()
self.settings.attributes = {}
self.settings.setmodule(
'tests.test_settings.default_settings', 10)
self.assertItemsEqual(six.iterkeys(self.settings.attributes),
six.iterkeys(ctrl_attributes))
for attr, ctrl_attr in zip(six.itervalues(self.settings.attributes),
six.itervalues(ctrl_attributes)):
self.assertEqual(attr.value, ctrl_attr.value)
self.assertEqual(attr.priority, ctrl_attr.priority)
def test_get(self):
test_configuration = {
'TEST_ENABLED1': '1',
'TEST_ENABLED2': True,
'TEST_ENABLED3': 1,
'TEST_DISABLED1': '0',
'TEST_DISABLED2': False,
'TEST_DISABLED3': 0,
'TEST_INT1': 123,
'TEST_INT2': '123',
'TEST_FLOAT1': 123.45,
'TEST_FLOAT2': '123.45',
'TEST_LIST1': ['one', 'two'],
'TEST_LIST2': 'one,two',
'TEST_STR': 'value',
'TEST_DICT1': {'key1': 'val1', 'ke2': 3},
'TEST_DICT2': '{"key1": "val1", "ke2": 3}',
}
settings = self.settings
settings.attributes = {key: SettingsAttribute(value, 0) for key, value
in six.iteritems(test_configuration)}
self.assertTrue(settings.getbool('TEST_ENABLED1'))
self.assertTrue(settings.getbool('TEST_ENABLED2'))
self.assertTrue(settings.getbool('TEST_ENABLED3'))
self.assertFalse(settings.getbool('TEST_ENABLEDx'))
self.assertTrue(settings.getbool('TEST_ENABLEDx', True))
self.assertFalse(settings.getbool('TEST_DISABLED1'))
self.assertFalse(settings.getbool('TEST_DISABLED2'))
self.assertFalse(settings.getbool('TEST_DISABLED3'))
self.assertEqual(settings.getint('TEST_INT1'), 123)
self.assertEqual(settings.getint('TEST_INT2'), 123)
self.assertEqual(settings.getint('TEST_INTx'), 0)
self.assertEqual(settings.getint('TEST_INTx', 45), 45)
self.assertEqual(settings.getfloat('TEST_FLOAT1'), 123.45)
self.assertEqual(settings.getfloat('TEST_FLOAT2'), 123.45)
self.assertEqual(settings.getfloat('TEST_FLOATx'), 0.0)
self.assertEqual(settings.getfloat('TEST_FLOATx', 55.0), 55.0)
self.assertEqual(settings.getlist('TEST_LIST1'), ['one', 'two'])
self.assertEqual(settings.getlist('TEST_LIST2'), ['one', 'two'])
self.assertEqual(settings.getlist('TEST_LISTx'), [])
self.assertEqual(settings.getlist('TEST_LISTx', ['default']), ['default'])
self.assertEqual(settings['TEST_STR'], 'value')
self.assertEqual(settings.get('TEST_STR'), 'value')
self.assertEqual(settings['TEST_STRx'], None)
self.assertEqual(settings.get('TEST_STRx'), None)
self.assertEqual(settings.get('TEST_STRx', 'default'), 'default')
self.assertEqual(settings.getdict('TEST_DICT1'), {'key1': 'val1', 'ke2': 3})
self.assertEqual(settings.getdict('TEST_DICT2'), {'key1': 'val1', 'ke2': 3})
self.assertEqual(settings.getdict('TEST_DICT3'), {})
self.assertEqual(settings.getdict('TEST_DICT3', {'key1': 5}), {'key1': 5})
self.assertRaises(ValueError, settings.getdict, 'TEST_LIST1')
def test_copy(self):
values = {
'TEST_BOOL': True,
'TEST_LIST': ['one', 'two'],
'TEST_LIST_OF_LISTS': [['first_one', 'first_two'],
['second_one', 'second_two']]
}
self.settings.setdict(values)
copy = self.settings.copy()
self.settings.set('TEST_BOOL', False)
self.assertTrue(copy.get('TEST_BOOL'))
test_list = self.settings.get('TEST_LIST')
test_list.append('three')
self.assertListEqual(copy.get('TEST_LIST'), ['one', 'two'])
test_list_of_lists = self.settings.get('TEST_LIST_OF_LISTS')
test_list_of_lists[0].append('first_three')
self.assertListEqual(copy.get('TEST_LIST_OF_LISTS')[0],
['first_one', 'first_two'])
def test_freeze(self):
self.settings.freeze()
with self.assertRaises(TypeError) as cm:
self.settings.set('TEST_BOOL', False)
self.assertEqual(str(cm.exception),
"Trying to modify an immutable Settings object")
def test_frozencopy(self):
frozencopy = self.settings.frozencopy()
self.assertTrue(frozencopy.frozen)
self.assertIsNot(frozencopy, self.settings)
def test_deprecated_attribute_overrides(self):
self.settings.set('BAR', 'fuz', priority='cmdline')
with warnings.catch_warnings(record=True) as w:
self.settings.overrides['BAR'] = 'foo'
self.assertIn("Settings.overrides", str(w[0].message))
self.assertEqual(self.settings.get('BAR'), 'foo')
self.assertEqual(self.settings.overrides.get('BAR'), 'foo')
self.assertIn('BAR', self.settings.overrides)
self.settings.overrides.update(BAR='bus')
self.assertEqual(self.settings.get('BAR'), 'bus')
self.assertEqual(self.settings.overrides.get('BAR'), 'bus')
self.settings.overrides.setdefault('BAR', 'fez')
self.assertEqual(self.settings.get('BAR'), 'bus')
self.settings.overrides.setdefault('FOO', 'fez')
self.assertEqual(self.settings.get('FOO'), 'fez')
self.assertEqual(self.settings.overrides.get('FOO'), 'fez')
def test_deprecated_attribute_defaults(self):
self.settings.set('BAR', 'fuz', priority='default')
with warnings.catch_warnings(record=True) as w:
self.settings.defaults['BAR'] = 'foo'
self.assertIn("Settings.defaults", str(w[0].message))
self.assertEqual(self.settings.get('BAR'), 'foo')
self.assertEqual(self.settings.defaults.get('BAR'), 'foo')
self.assertIn('BAR', self.settings.defaults)
class CrawlerSettingsTest(unittest.TestCase):
def test_deprecated_crawlersettings(self):
def _get_settings(settings_dict=None):
settings_module = type('SettingsModuleMock', (object,), settings_dict or {})
return CrawlerSettings(settings_module)
with warnings.catch_warnings(record=True) as w:
settings = _get_settings()
self.assertIn("CrawlerSettings is deprecated", str(w[0].message))
# test_global_defaults
self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 180)
# test_defaults
settings.defaults['DOWNLOAD_TIMEOUT'] = '99'
self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 99)
# test_settings_module
settings = _get_settings({'DOWNLOAD_TIMEOUT': '3'})
self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 3)
# test_overrides
settings = _get_settings({'DOWNLOAD_TIMEOUT': '3'})
settings.overrides['DOWNLOAD_TIMEOUT'] = '15'
self.assertEqual(settings.getint('DOWNLOAD_TIMEOUT'), 15)
if __name__ == "__main__":
unittest.main()
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