Mocker.patch(_name_ + '.ftplib', new=mock_ftplib) This time the test succeeds and I only need to collect the result of the second print to get the proper asserts: def test_download_file(mocker): I'm placing this in the test and would run it again: def test_download_file(mocker): Print(mock_asserts(mock_ftplib, name='mock_ftplib')) Mock_ftplib = mocker.MagicMock(name='ftplib') Enter the name the server printed for you into the client prompt. You should see a prompt for a host address. On the other command prompt (the one in the 'receive' folder) open the python file 'client.py'.
CREATE A SIMPLE FTP SERVER PYTHON PC
This prints the name of your current PC host and awaits any socket connections. When you run the test for the first time, it would fail due to unknown DNS, but the print statement which wraps my library would give us this valuable input. You can use this to write Python programs that perform a variety of automated FTP jobs, such as mirroring other FTP servers. On 1 command prompt, open the python file 'server.py'. Name=_name_).mock_modules().prepare_asserts_calls().generate())
CREATE A SIMPLE FTP SERVER PYTHON CODE
You start by having your code and a basic pytest function, with the addition of my helper library to generate mocks to modules and the matching asserts generation: import ftplibįrom mock_autogen.pytest_mocker import PytestMocker I have went a bit further and have actually wrote a library which helps me to mock easily. Like Ibrohim's answer, I prefer pytest with mocker. How do I get the actual object the fuction is running? The long term goal is not having the "download_file" function in the same file, but calling it from a separate module file. I know it must be using the mock object since that is a fake server name, and when run without patching, it throws a "socket.gaierror" exception. When I run this, I get: AssertionError: Expected call: cwd('pub/files') Here is a simple example: import unittestĭef download_file(hostname, file_path, file_name):Ĭlass test_download_file(self, mock_ftp):ĭownload_file('', 'pub/files', 'wanted_file.txt') I've simplified everything down and still am not wrapping my head around how it works. To run the server/client, call the appropriate program from the terminal. All the packages used in this implementation are included in the standard library. It enables the transfer of any file type. This is a file server written in Python 2.7, which makes use of Python's socket module. I don't know why I'm just not getting this, but I want to use mock in Python to test that my functions are calling functions in ftplib.FTP correctly. FTP File Server via Socket Programming in Python.
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