@activate_mocker
def test_create_client(self, mocker: Mocker):
    post_mock = mocker.patch('requests.post')
    post_mock.return_value.status_code = 200
    post_mock.return_value.json.return_value = {'msg': done}
    
    send_clients_to_crm()
    
    post_mock.assert_called_once_with(...)

def mock_post(mocker, status):
    response = requests.Response()
    response.status_code = status
    response.headers = {'Location': '...'}
    response._content = 'some content'
    
    return mocker.patch('requests.post', return_value=response)

@activate_mocker
def test_upload_post_success(mocker):
    mocked_post = mock_post(mocker, 201)
    ...
@activate_mocker
def test_upload_post_error(mocker):
    mocked_post = mock_post(mocker, 500)
    ...

from unittest_mocker import activate_mocker, Mocker
from api import ApiClient

@activate_mocker
def test_api_client(self, mocker: Mocker):
    client_mock = mocker.patch_class('api.ApiClient')

    ApiClient(url='example.com')(command='start')
    
    client_mock.assert_initialized_with(url='example.com')
    client_mock.mocks['__call__'].assert_called_once_with(command='start')

# Variant 1
mocker.patch_class(target: str, methods=Optional[list[str]])
# Example:
mock = mocker.patch_class('some_module.SomeClass', methods=['method_1', 'method_2'])

# Variant 2
mocker.patch_class.object(target: Union[module, class], attribute: str, methods=Optional[list[str]])
# Example:
import some_module
mock = mocker.patch_class(some_module, 'SomeClass', methods=['method_1', 'method_2'])

mock.mocks['__init__'].assert_called_once_with(...)

mock = mocker.patch_class('some_module.SomeClass')
...
mock.mocks['__call__'].assert_called_once_with(...)