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from unittest import TestCase
from requests_mock import Mocker
default_session = functools.partial(postgrestutils.Session, base_uri='http://example.com/', token=TOKEN)
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DEFAULT_HEADERS = {
'Authorization': 'Bearer {}'.format(TOKEN),
'Accept': 'application/json'
}
SUPERHERO_TEST_DATA = [
{
'id': 68,
'name': 'Batman',
'gender': 'Male',
'eye_color': 'blue',
'race': 'Human',
'hair_color': 'black',
'height': 188,
'publisher': 'DC Comics',
'skin_color': None,
'alignment': 'good',
'weight': 95
}, {
'id': 212,
'name': 'Deadpool',
'gender': 'Male',
'eye_color': 'brown',
'race': 'Mutant',
'hair_color': 'No Hair',
'height': 188,
'publisher': 'Marvel Comics',
'skin_color': None,
'alignment': 'neutral',
'weight': 95
}, {
'id': 345,
'name': 'Iron Man',
'gender': 'Male',
'eye_color': 'blue',
'race': 'Human',
'hair_color': 'Black',
'height': 198,
'publisher': 'Marvel Comics',
'skin_color': None,
'alignment': 'good',
'weight': 191
}, {
'id': 369,
'name': 'Joker',
'gender': 'Male',
'eye_color': 'green',
'race': 'Human',
'hair_color': 'Green',
'height': 196,
'publisher': 'DC Comics',
'skin_color': 'white',
'alignment': 'bad',
'weight': 86
}, {
'id': 423,
'name': 'Magneto',
'gender': 'Male',
'eye_color': 'grey',
'race': 'Mutant',
'hair_color': 'White',
'height': 188,
'publisher': 'Marvel Comics',
'skin_color': None,
'alignment': 'bad',
'weight': 86
}
]
@Mocker()
class TestPgrestClientGet(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA[0]
def test_single_object_returned(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero?id=eq.1000000000',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=200,
reason='OK',
json=self.data
)
with default_session() as s:
params = {'id': 'eq.1000000000'}
res = s.get('superhero', params=params)
self.assertTrue(mock.called_once)
def test_object_does_not_exist(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero?id=eq.1337',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=406,
reason='Not Acceptable',
text="""{"details":"Results contain 0 rows, application/vnd.pgrst.object+json requires 1 row","message":"""
""""JSON object requested, multiple (or no) rows returned"}"""
)
with default_session() as s, self.assertRaises(postgrestutils.ObjectDoesNotExist):
params = {'id': 'eq.1337'}
s.get('superhero', params=params)
self.assertTrue(mock.called_once)
def test_multiple_objects_returned(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=406,
reason='Not Acceptable',
text="""{"details":"Results contain 5 rows, application/vnd.pgrst.object+json requires 1 row","message":"""
""""JSON object requested, multiple (or no) rows returned"}"""
)
with default_session() as s, self.assertRaises(postgrestutils.MultipleObjectsReturned):
s.get('superhero')
self.assertTrue(mock.called_once)
def test_datetime_parser(self, mock):
expected = {
'id': 1337,
'random': datetime.datetime(2020, 5, 20, 8, 35, 6, 659425, tzinfo=datetime.timezone.utc)
}
mock.register_uri(
'GET',
'http://example.com/random_datetime',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=200,
reason='OK',
json={'id': 1337, 'random': "2020-05-20T08:35:06.659425+00:00"}
)
with default_session() as s:
params = {'id': 'eq.1337'}
res = s.get('random_datetime', params=params)
self.assertTrue(mock.called_once)
def test_without_datetime_parser(self, mock):
test_json = {'id': 1337, 'random': "2020-05-20T08:35:06.659425+00:00"}
mock.register_uri(
'GET',
'http://example.com/random_datetime',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=200,
reason='OK',
json=test_json
)
with default_session() as s:
params = {'select': 'id,random', 'id': 'eq.1337'}
res = s.get('random_datetime', params=params, parse_dt=False)
self.assertTrue(mock.called_once)
@Mocker()
class TestPgrestClientFilterStrategyNone(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA
def test_fetch_all_first(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session() as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(list(res), self.data) # fetch data
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # fetched data should be cached
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(list(res), self.data) # should utilize cache
self.assertEqual(res[:1], self.data[:1]) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
def test_fetch_len_first(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session() as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res), len(self.data)) # should fetch len
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res._result_cache, self.data) # results should be cached (counting strategy none)
self.assertEqual(res[:1], self.data[:1]) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertEqual(list(res), self.data) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
def test_cache_fetching_unbounded_slice(self, mock):
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session() as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(res[:], self.data) # fetch data
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # fetched data should be cached
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res[:], self.data) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
@Mocker()
class TestPgrestClientFilterStrategyExact(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA
def test_fetch_all_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session(count=postgrestutils.Count.EXACT) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(list(res), self.data) # fetch data
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # fetched data should be cached
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should also be cached
self.assertEqual(list(res), self.data) # should utilize cache
self.assertEqual(res[:1], self.data[:1]) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
def test_fetch_len_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
# in order to fetch first
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0'}},
status_code=200,
reason='OK',
headers={'Content-Range': '0-0/*'},
)
# in order to fetch range since index 2
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '2-'}},
status_code=200,
reason='OK',
headers={'Content-Range': '2-4/*'},
json=self.data[2:]
)
# in order to fetch length
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0', 'Prefer': 'count=exact'}},
status_code=206,
reason='Partial Content',
headers={'Content-Range': '0-0/5'},
json=self.data[0]
)
with default_session(count=postgrestutils.Count.EXACT) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res), len(self.data)) # should fetch len
self.assertTrue(mock.called_once) # should have been called once
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self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res[:1], self.data[:1]) # should fetch first element as range
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should fetch range starting at index 2
self.assertEqual(res[0], self.data[0]) # should fetch first element as range but return dict
self.assertEqual(list(res), self.data) # should fetch all elements
self.assertEqual(res._result_cache, self.data) # should cache all elements
self.assertTrue(mock.called) # should have been called at least once
self.assertEqual(mock.call_count, 5) # should have been called 5 times (fetch len, range, first and all)
@Mocker()
class TestPgrestClientFilterStrategyPlanned(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA
def test_fetch_all_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session(count=postgrestutils.Count.PLANNED) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(list(res), self.data) # fetch data
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # fetched data should be cached
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should also be cached
self.assertEqual(list(res), self.data) # should utilize cache
self.assertEqual(res[:1], self.data[:1]) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
def test_fetch_len_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
# in order to fetch first
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0'}},
status_code=200,
reason='OK',
headers={'Content-Range': '0-0/*'},
json=[self.data[0]]
)
# in order to fetch range since index 2
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '2-'}},
status_code=200,
reason='OK',
headers={'Content-Range': '2-4/*'},
json=self.data[2:]
)
# in order to fetch length
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0', 'Prefer': 'count=planned'}},
status_code=206,
reason='Partial Content',
headers={'Content-Range': '0-0/5'},
json=self.data[0]
)
with default_session(count=postgrestutils.Count.PLANNED) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res), len(self.data)) # should fetch len
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res[:1], self.data[:1]) # should fetch first element as range
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should fetch range starting at index 2
self.assertEqual(res[0], self.data[0]) # should fetch first element as range but return dict
self.assertEqual(list(res), self.data) # should fetch all elements
self.assertEqual(res._result_cache, self.data) # should cache all elements
self.assertTrue(mock.called) # should have been called at least once
self.assertEqual(mock.call_count, 5) # should have been called 5 times (fetch len, range, first and all)
@Mocker()
class TestPgrestClientFilterStrategyEstimated(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA
def test_fetch_all_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
with default_session(count=postgrestutils.Count.ESTIMATED) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(list(res), self.data) # fetch data
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # fetched data should be cached
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should also be cached
self.assertEqual(list(res), self.data) # should utilize cache
self.assertEqual(res[:1], self.data[:1]) # should utilize cache
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should utilize cache
self.assertEqual(res[0], self.data[0]) # should utilize cache
self.assertTrue(mock.called_once) # should not have been called again
def test_fetch_len_first(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
# in order to fetch first
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0'}},
status_code=200,
reason='OK',
headers={'Content-Range': '0-0/*'},
json=[self.data[0]]
)
# in order to fetch range since index 2
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '2-'}},
status_code=200,
reason='OK',
headers={'Content-Range': '2-4/*'},
json=self.data[2:]
)
# in order to fetch length
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={
**DEFAULT_HEADERS,
**{'Range-Unit': 'items', 'Range': '0-0', 'Prefer': 'count=estimated'}
},
status_code=206,
reason='Partial Content',
headers={'Content-Range': '0-0/5'},
json=self.data[0]
)
with default_session(count=postgrestutils.Count.ESTIMATED) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res), len(self.data)) # should fetch len
self.assertTrue(mock.called_once) # should have been called once
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self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res[:1], self.data[:1]) # should fetch first element as range
self.assertEqual(res[:0], self.data[:0]) # should return empty list
self.assertEqual(res[4:2], self.data[4:2]) # should return empty list
self.assertEqual(res[2:], self.data[2:]) # should fetch range starting at index 2
self.assertEqual(res[0], self.data[0]) # should fetch first element as range but return dict
self.assertEqual(list(res), self.data) # should fetch all elements
self.assertEqual(res._result_cache, self.data) # should cache all elements
self.assertTrue(mock.called) # should have been called at least once
self.assertEqual(mock.call_count, 5) # should have been called 5 times (fetch len, range, first and all)
@Mocker()
class TestPgrestClientSessionDefaults(TestCase):
def setUp(self):
super().setUp()
self.data = SUPERHERO_TEST_DATA
def test_override_parse_dt_session_option(self, mock):
test_json = {'id': 1337, 'random': "2020-05-20T08:35:06.659425+00:00"}
mock.register_uri(
'GET',
'http://example.com/random_datetime',
request_headers={**DEFAULT_HEADERS, **{'Accept': 'application/vnd.pgrst.object+json'}},
status_code=200,
reason='OK',
json=test_json
)
with default_session(parse_dt=False) as s:
params = {'select': 'id,random', 'id': 'eq.1337'}
res = s.get('random_datetime', params=params)
self.assertEqual(res, test_json)
self.assertTrue(mock.called_once)
mock.reset()
res2 = s.get('random_datetime', params=params, parse_dt=True)
expected = {
'id': 1337,
'random': datetime.datetime(2020, 5, 20, 8, 35, 6, 659425, tzinfo=datetime.timezone.utc)
}
self.assertEqual(res2, expected)
self.assertTrue(mock.called_once)
def test_override_count_session_option(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
# in order to fetch length
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Range-Unit': 'items', 'Range': '0-0', 'Prefer': 'count=exact'}},
status_code=206,
reason='Partial Content',
headers={'Content-Range': '0-0/5'},
json=self.data[0]
)
with default_session(count=postgrestutils.Count.EXACT) as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res), len(self.data)) # should fetch len
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._len_cache, len(self.data)) # len of fetched data should be cached
self.assertNotEqual(res._result_cache, self.data) # should not have cached all elements
mock.reset() # reset mock
# override the count session option in this specific request
res2 = s.filter('superhero', count=postgrestutils.Count.NONE)
self.assertIsInstance(res2, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(len(res2), len(self.data)) # should fetch all elements to get len
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res2._len_cache, len(self.data)) # len of fetched data should be cached
self.assertEqual(res2._result_cache, self.data) # should have cached all elements
def test_override_schema_session_option(self, mock):
# in order to fetch all
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers=DEFAULT_HEADERS,
status_code=200,
reason='OK',
json=self.data
)
# in order to fetch all (other schema)
mock.register_uri(
'GET',
'http://example.com/superhero',
request_headers={**DEFAULT_HEADERS, **{'Accept-Profile': 'other_schema'}},
status_code=200,
reason='OK',
json=self.data
)
with default_session(schema='other_schema') as s:
res = s.filter('superhero')
self.assertIsInstance(res, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request should have been made yet
self.assertEqual(list(res), self.data) # should fetch all elements
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res._result_cache, self.data) # should have cached all elements
self.assertEqual(res._len_cache, len(self.data)) # should have cached the length
mock.reset()
res2 = s.filter('superhero', schema=postgrestutils.DEFAULT_SCHEMA)
self.assertIsInstance(res2, postgrestutils.JsonResultSet) # should return lazy object
self.assertFalse(mock.called) # no request.should have been made yet
self.assertEqual(list(res2), self.data) # should fetch all elements
self.assertTrue(mock.called_once) # should have been called once
self.assertEqual(res2._result_cache, self.data) # should have cached all elements
self.assertEqual(res2._len_cache, len(self.data)) # should have cached the length