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vcrpy/tests/unit/test_cassettes.py
2015-10-26 00:36:44 -07:00

313 lines
10 KiB
Python

import copy
import inspect
import os
from six.moves import http_client as httplib
import pytest
import yaml
from vcr.compat import mock, contextlib
from vcr.cassette import Cassette
from vcr.errors import UnhandledHTTPRequestError
from vcr.patch import force_reset
from vcr.matchers import path, method, query, host
from vcr.stubs import VCRHTTPSConnection
def test_cassette_load(tmpdir):
a_file = tmpdir.join('test_cassette.yml')
a_file.write(yaml.dump({'interactions': [
{'request': {'body': '', 'uri': 'foo', 'method': 'GET', 'headers': {}},
'response': 'bar'}
]}))
a_cassette = Cassette.load(path=str(a_file))
assert len(a_cassette) == 1
def test_cassette_not_played():
a = Cassette('test')
assert not a.play_count
def test_cassette_append():
a = Cassette('test')
a.append('foo', 'bar')
assert a.requests == ['foo']
assert a.responses == ['bar']
def test_cassette_len():
a = Cassette('test')
a.append('foo', 'bar')
a.append('foo2', 'bar2')
assert len(a) == 2
def _mock_requests_match(request1, request2, matchers):
return request1 == request2
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
def test_cassette_contains():
a = Cassette('test')
a.append('foo', 'bar')
assert 'foo' in a
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
def test_cassette_responses_of():
a = Cassette('test')
a.append('foo', 'bar')
assert a.responses_of('foo') == ['bar']
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
def test_cassette_get_missing_response():
a = Cassette('test')
with pytest.raises(UnhandledHTTPRequestError):
a.responses_of('foo')
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
def test_cassette_cant_read_same_request_twice():
a = Cassette('test')
a.append('foo', 'bar')
a.play_response('foo')
with pytest.raises(UnhandledHTTPRequestError):
a.play_response('foo')
def make_get_request():
conn = httplib.HTTPConnection("www.python.org")
conn.request("GET", "/index.html")
return conn.getresponse()
@mock.patch('vcr.cassette.requests_match', return_value=True)
@mock.patch('vcr.cassette.load_cassette', lambda *args, **kwargs: (('foo',), (mock.MagicMock(),)))
@mock.patch('vcr.cassette.Cassette.can_play_response_for', return_value=True)
@mock.patch('vcr.stubs.VCRHTTPResponse')
def test_function_decorated_with_use_cassette_can_be_invoked_multiple_times(*args):
decorated_function = Cassette.use(path='test')(make_get_request)
for i in range(4):
decorated_function()
def test_arg_getter_functionality():
arg_getter = mock.Mock(return_value={'path': 'test'})
context_decorator = Cassette.use_arg_getter(arg_getter)
with context_decorator as cassette:
assert cassette._path == 'test'
arg_getter.return_value = {'path': 'other'}
with context_decorator as cassette:
assert cassette._path == 'other'
arg_getter.return_value = {'path': 'other', 'filter_headers': ('header_name',)}
@context_decorator
def function():
pass
with mock.patch.object(
Cassette, 'load',
return_value=mock.MagicMock(inject=False)
) as cassette_load:
function()
cassette_load.assert_called_once_with(**arg_getter.return_value)
def test_cassette_not_all_played():
a = Cassette('test')
a.append('foo', 'bar')
assert not a.all_played
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
def test_cassette_all_played():
a = Cassette('test')
a.append('foo', 'bar')
a.play_response('foo')
assert a.all_played
def test_before_record_response():
before_record_response = mock.Mock(return_value='mutated')
cassette = Cassette('test', before_record_response=before_record_response)
cassette.append('req', 'res')
before_record_response.assert_called_once_with('res')
assert cassette.responses[0] == 'mutated'
def assert_get_response_body_is(value):
conn = httplib.HTTPConnection("www.python.org")
conn.request("GET", "/index.html")
assert conn.getresponse().read().decode('utf8') == value
@mock.patch('vcr.cassette.requests_match', _mock_requests_match)
@mock.patch('vcr.cassette.Cassette.can_play_response_for', return_value=True)
@mock.patch('vcr.cassette.Cassette._save', return_value=True)
def test_nesting_cassette_context_managers(*args):
first_response = {'body': {'string': b'first_response'}, 'headers': {},
'status': {'message': 'm', 'code': 200}}
second_response = copy.deepcopy(first_response)
second_response['body']['string'] = b'second_response'
with contextlib.ExitStack() as exit_stack:
first_cassette = exit_stack.enter_context(Cassette.use(path='test'))
exit_stack.enter_context(mock.patch.object(first_cassette, 'play_response',
return_value=first_response))
assert_get_response_body_is('first_response')
# Make sure a second cassette can supercede the first
with Cassette.use(path='test') as second_cassette:
with mock.patch.object(second_cassette, 'play_response', return_value=second_response):
assert_get_response_body_is('second_response')
# Now the first cassette should be back in effect
assert_get_response_body_is('first_response')
def test_nesting_context_managers_by_checking_references_of_http_connection():
original = httplib.HTTPConnection
with Cassette.use(path='test'):
first_cassette_HTTPConnection = httplib.HTTPConnection
with Cassette.use(path='test'):
second_cassette_HTTPConnection = httplib.HTTPConnection
assert second_cassette_HTTPConnection is not first_cassette_HTTPConnection
with Cassette.use(path='test'):
assert httplib.HTTPConnection is not second_cassette_HTTPConnection
with force_reset():
assert httplib.HTTPConnection is original
assert httplib.HTTPConnection is second_cassette_HTTPConnection
assert httplib.HTTPConnection is first_cassette_HTTPConnection
def test_custom_patchers():
class Test(object):
attribute = None
with Cassette.use(path='custom_patches',
custom_patches=((Test, 'attribute', VCRHTTPSConnection),)):
assert issubclass(Test.attribute, VCRHTTPSConnection)
assert VCRHTTPSConnection is not Test.attribute
old_attribute = Test.attribute
with Cassette.use(path='custom_patches',
custom_patches=((Test, 'attribute', VCRHTTPSConnection),)):
assert issubclass(Test.attribute, VCRHTTPSConnection)
assert VCRHTTPSConnection is not Test.attribute
assert Test.attribute is not old_attribute
assert issubclass(Test.attribute, VCRHTTPSConnection)
assert VCRHTTPSConnection is not Test.attribute
assert Test.attribute is old_attribute
def test_decorated_functions_are_reentrant():
info = {"second": False}
original_conn = httplib.HTTPConnection
@Cassette.use(path='whatever', inject=True)
def test_function(cassette):
if info['second']:
assert httplib.HTTPConnection is not info['first_conn']
else:
info['first_conn'] = httplib.HTTPConnection
info['second'] = True
test_function()
assert httplib.HTTPConnection is info['first_conn']
test_function()
assert httplib.HTTPConnection is original_conn
def test_cassette_use_called_without_path_uses_function_to_generate_path():
@Cassette.use(inject=True)
def function_name(cassette):
assert cassette._path == 'function_name'
function_name()
def test_path_transformer_with_function_path():
path_transformer = lambda path: os.path.join('a', path)
@Cassette.use(inject=True, path_transformer=path_transformer)
def function_name(cassette):
assert cassette._path == os.path.join('a', 'function_name')
function_name()
def test_path_transformer_with_context_manager():
with Cassette.use(
path='b', path_transformer=lambda *args: 'a'
) as cassette:
assert cassette._path == 'a'
def test_path_transformer_None():
with Cassette.use(
path='a', path_transformer=None,
) as cassette:
assert cassette._path == 'a'
def test_func_path_generator():
def generator(function):
return os.path.join(os.path.dirname(inspect.getfile(function)),
function.__name__)
@Cassette.use(inject=True, func_path_generator=generator)
def function_name(cassette):
assert cassette._path == os.path.join(os.path.dirname(__file__), 'function_name')
function_name()
def test_use_as_decorator_on_coroutine():
original_http_connetion = httplib.HTTPConnection
@Cassette.use(inject=True)
def test_function(cassette):
assert httplib.HTTPConnection.cassette is cassette
assert httplib.HTTPConnection is not original_http_connetion
value = yield 1
assert value == 1
assert httplib.HTTPConnection.cassette is cassette
assert httplib.HTTPConnection is not original_http_connetion
value = yield 2
assert value == 2
coroutine = test_function()
value = next(coroutine)
while True:
try:
value = coroutine.send(value)
except StopIteration:
break
def test_use_as_decorator_on_generator():
original_http_connetion = httplib.HTTPConnection
@Cassette.use(inject=True)
def test_function(cassette):
assert httplib.HTTPConnection.cassette is cassette
assert httplib.HTTPConnection is not original_http_connetion
yield 1
assert httplib.HTTPConnection.cassette is cassette
assert httplib.HTTPConnection is not original_http_connetion
yield 2
assert list(test_function()) == [1, 2]
def test_similar_requests(tmpdir):
# WIP needs to be finished
@Cassette.use(inject=True, match_on=(path, query, host, method))
def test_function(cassette):
conn = httplib.HTTPConnection("www.python.org")
conn.request("GET", "/index.html?test=1")
conn = httplib.HTTPConnection("www.python.org")
conn.request("GET", "/index.html?test=0")
conn = httplib.HTTPConnection("www.cool.org")
conn.request("GET", "/index.html?test=0")
cassette.similar_requests()