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import unittest
from unittest import mock
from scrapy.settings import (BaseSettings, Settings, SettingsAttribute,
SETTINGS_PRIORITIES, get_settings_priority)
from . import default_settings
class SettingsGlobalFuncsTest(unittest.TestCase):
def test_get_settings_priority(self):
for prio_str, prio_num in SETTINGS_PRIORITIES.items():
self.assertEqual(get_settings_priority(prio_str), prio_num)
self.assertEqual(get_settings_priority(99), 99)
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)
def test_overwrite_basesettings(self):
original_dict = {'one': 10, 'two': 20}
original_settings = BaseSettings(original_dict, 0)
attribute = SettingsAttribute(original_settings, 0)
new_dict = {'three': 11, 'four': 21}
attribute.set(new_dict, 10)
self.assertIsInstance(attribute.value, BaseSettings)
self.assertCountEqual(attribute.value, new_dict)
self.assertCountEqual(original_settings, original_dict)
new_settings = BaseSettings({'five': 12}, 0)
attribute.set(new_settings, 0) # Insufficient priority
self.assertCountEqual(attribute.value, new_dict)
attribute.set(new_settings, 10)
self.assertCountEqual(attribute.value, new_settings)
def test_repr(self):
self.assertEqual(repr(self.attribute),
"<SettingsAttribute value='value' priority=10>")
class BaseSettingsTest(unittest.TestCase):
def setUp(self):
self.settings = BaseSettings()
def test_set_new_attribute(self):
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_settingsattribute(self):
myattr = SettingsAttribute(0, 30) # Note priority 30
self.settings.set('TEST_ATTR', myattr, 10)
self.assertEqual(self.settings.get('TEST_ATTR'), 0)
self.assertEqual(self.settings.getpriority('TEST_ATTR'), 30)
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):
attr = SettingsAttribute('value', 10)
with mock.patch.object(attr, '__setattr__') as mock_setattr, mock.patch.object(attr, 'set') as mock_set:
self.settings.attributes = {'TEST_OPTION': attr}
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_setitem(self):
settings = BaseSettings()
settings.set('key', 'a', 'default')
settings['key'] = 'b'
self.assertEqual(settings['key'], 'b')
self.assertEqual(settings.getpriority('key'), 20)
settings['key'] = 'c'
self.assertEqual(settings['key'], 'c')
settings['key2'] = 'x'
self.assertIn('key2', settings)
self.assertEqual(settings['key2'], 'x')
self.assertEqual(settings.getpriority('key2'), 20)
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_any_call('TEST_DEFAULT', 'defvalue', 10)
mock_set.assert_any_call('TEST_DICT', {'key': 'val'}, 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.assertCountEqual(self.settings.attributes.keys(),
ctrl_attributes.keys())
for key in ctrl_attributes.keys():
attr = self.settings.attributes[key]
ctrl_attr = ctrl_attributes[key]
self.assertEqual(attr.value, ctrl_attr.value)
self.assertEqual(attr.priority, ctrl_attr.priority)
def test_update(self):
settings = BaseSettings({'key_lowprio': 0}, priority=0)
settings.set('key_highprio', 10, priority=50)
custom_settings = BaseSettings({'key_lowprio': 1, 'key_highprio': 11},
priority=30)
custom_settings.set('newkey_one', None, priority=50)
custom_dict = {'key_lowprio': 2, 'key_highprio': 12, 'newkey_two': None}
settings.update(custom_dict, priority=20)
self.assertEqual(settings['key_lowprio'], 2)
self.assertEqual(settings.getpriority('key_lowprio'), 20)
self.assertEqual(settings['key_highprio'], 10)
self.assertIn('newkey_two', settings)
self.assertEqual(settings.getpriority('newkey_two'), 20)
settings.update(custom_settings)
self.assertEqual(settings['key_lowprio'], 1)
self.assertEqual(settings.getpriority('key_lowprio'), 30)
self.assertEqual(settings['key_highprio'], 10)
self.assertIn('newkey_one', settings)
self.assertEqual(settings.getpriority('newkey_one'), 50)
settings.update({'key_lowprio': 3}, priority=20)
self.assertEqual(settings['key_lowprio'], 1)
def test_update_jsonstring(self):
settings = BaseSettings({'number': 0, 'dict': BaseSettings({'key': 'val'})})
settings.update('{"number": 1, "newnumber": 2}')
self.assertEqual(settings['number'], 1)
self.assertEqual(settings['newnumber'], 2)
settings.set("dict", '{"key": "newval", "newkey": "newval2"}')
self.assertEqual(settings['dict']['key'], "newval")
self.assertEqual(settings['dict']['newkey'], "newval2")
def test_delete(self):
settings = BaseSettings({'key': None})
settings.set('key_highprio', None, priority=50)
settings.delete('key')
settings.delete('key_highprio')
self.assertNotIn('key', settings)
self.assertIn('key_highprio', settings)
del settings['key_highprio']
self.assertNotIn('key_highprio', settings)
def test_get(self):
test_configuration = {
'TEST_ENABLED1': '1',
'TEST_ENABLED2': True,
'TEST_ENABLED3': 1,
'TEST_ENABLED4': 'True',
'TEST_ENABLED5': 'true',
'TEST_ENABLED_WRONG': 'on',
'TEST_DISABLED1': '0',
'TEST_DISABLED2': False,
'TEST_DISABLED3': 0,
'TEST_DISABLED4': 'False',
'TEST_DISABLED5': 'false',
'TEST_DISABLED_WRONG': 'off',
'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 test_configuration.items()}
self.assertTrue(settings.getbool('TEST_ENABLED1'))
self.assertTrue(settings.getbool('TEST_ENABLED2'))
self.assertTrue(settings.getbool('TEST_ENABLED3'))
self.assertTrue(settings.getbool('TEST_ENABLED4'))
self.assertTrue(settings.getbool('TEST_ENABLED5'))
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.assertFalse(settings.getbool('TEST_DISABLED4'))
self.assertFalse(settings.getbool('TEST_DISABLED5'))
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')
self.assertRaises(ValueError, settings.getbool, 'TEST_ENABLED_WRONG')
self.assertRaises(ValueError, settings.getbool, 'TEST_DISABLED_WRONG')
def test_getpriority(self):
settings = BaseSettings({'key': 'value'}, priority=99)
self.assertEqual(settings.getpriority('key'), 99)
self.assertEqual(settings.getpriority('nonexistentkey'), None)
def test_getwithbase(self):
s = BaseSettings({'TEST_BASE': BaseSettings({1: 1, 2: 2}, 'project'),
'TEST': BaseSettings({1: 10, 3: 30}, 'default'),
'HASNOBASE': BaseSettings({3: 3000}, 'default')})
s['TEST'].set(2, 200, 'cmdline')
self.assertCountEqual(s.getwithbase('TEST'), {1: 1, 2: 200, 3: 30})
self.assertCountEqual(s.getwithbase('HASNOBASE'), s['HASNOBASE'])
self.assertEqual(s.getwithbase('NONEXISTENT'), {})
def test_maxpriority(self):
# Empty settings should return 'default'
self.assertEqual(self.settings.maxpriority(), 0)
self.settings.set('A', 0, 10)
self.settings.set('B', 0, 30)
self.assertEqual(self.settings.maxpriority(), 30)
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_copy_to_dict(self):
s = BaseSettings({'TEST_STRING': 'a string',
'TEST_LIST': [1, 2],
'TEST_BOOLEAN': False,
'TEST_BASE': BaseSettings({1: 1, 2: 2}, 'project'),
'TEST': BaseSettings({1: 10, 3: 30}, 'default'),
'HASNOBASE': BaseSettings({3: 3000}, 'default')})
self.assertDictEqual(
s.copy_to_dict(),
{
'HASNOBASE': {3: 3000},
'TEST': {1: 10, 3: 30},
'TEST_BASE': {1: 1, 2: 2},
'TEST_LIST': [1, 2],
'TEST_BOOLEAN': False,
'TEST_STRING': 'a string',
}
)
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)
class SettingsTest(unittest.TestCase):
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), 2)
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)
@mock.patch('scrapy.settings.default_settings', default_settings)
def test_autopromote_dicts(self):
settings = Settings()
mydict = settings.get('TEST_DICT')
self.assertIsInstance(mydict, BaseSettings)
self.assertIn('key', mydict)
self.assertEqual(mydict['key'], 'val')
self.assertEqual(mydict.getpriority('key'), 0)
@mock.patch('scrapy.settings.default_settings', default_settings)
def test_getdict_autodegrade_basesettings(self):
settings = Settings()
mydict = settings.getdict('TEST_DICT')
self.assertIsInstance(mydict, dict)
self.assertEqual(len(mydict), 1)
self.assertIn('key', mydict)
self.assertEqual(mydict['key'], 'val')
def test_passing_objects_as_values(self):
from scrapy.core.downloader.handlers.file import FileDownloadHandler
from scrapy.utils.misc import create_instance
from scrapy.utils.test import get_crawler
class TestPipeline():
def process_item(self, i, s):
return i
settings = Settings({
'ITEM_PIPELINES': {
TestPipeline: 800,
},
'DOWNLOAD_HANDLERS': {
'ftp': FileDownloadHandler,
},
})
self.assertIn('ITEM_PIPELINES', settings.attributes)
mypipeline, priority = settings.getdict('ITEM_PIPELINES').popitem()
self.assertEqual(priority, 800)
self.assertEqual(mypipeline, TestPipeline)
self.assertIsInstance(mypipeline(), TestPipeline)
self.assertEqual(mypipeline().process_item('item', None), 'item')
myhandler = settings.getdict('DOWNLOAD_HANDLERS').pop('ftp')
self.assertEqual(myhandler, FileDownloadHandler)
myhandler_instance = create_instance(myhandler, None, get_crawler())
self.assertIsInstance(myhandler_instance, FileDownloadHandler)
self.assertTrue(hasattr(myhandler_instance, 'download_request'))
if __name__ == "__main__":
unittest.main()
|
