My source files are located under src and my test files are located under tests. When I want to run a test file, say python myTest.py, I get an import error: "No module named ASourceModule.py".
How do I import all the modules from source needed to run my tests?
You could add that directory to the path:
import sys
sys.path.append('../src')
Maybe put this into a module if you are using it a lot.
Although this solution works for some situations, there are better solutions. See for example this answer.
If you don't want to add the source path to each test file or change your PYTHONPATH, you can use nose to run the tests.
Suppose your directory structure is like this:
project
package
__init__.py
module.py
tests
__init__.py
test_module.py
You should import the module normally in the test_module.py (e.g. from package import module). Then run the tests by running nosetests in the project folder. You can also run specific tests by doing nosetests tests/test_module.py.
The __init__.py in the tests directory is necessary if you want to run the tests from inside it.
You can install nose easily with easy_install or pip:
easy_install nose
or
pip install nose
nose extends unittest in a lot more ways, to learn more about it you can check their website: https://nose.readthedocs.org/en/latest/
__init__.py in the tests directory is necessary if you want to run the tests from inside it."
nose2 command to automatically execute all tests. Nose2 looks for all files starting with test word.The best (most manageable) solution appears to be using a virtualenv and setuptools/distribute to install a development copy of your (src) package. That way your tests execute against a fully "installed" system.
In the pystest docs there is a section on "good practices" explaining this approach, see here.
On my system (Windows 10), I was required to do something like this:
import sys
import os
sys.path.append(os.path.dirname(os.path.realpath(__file__)) + "/../src")
Appending the relative directory directly to sys.path did not work
For those using Pytest:
src. That's meaningless and leads to confusing import statements such as from src import module. Rename the src folder to the name of your package (mypackage for the sake of this example)!mypackage is recognized as a package by putting an empty __init__.py inside.conftest.py in the project folder.__init__.py in the test directory.Looks like this:
myproject
conftest.py
mypackage
__init__.py
mymodule.py
test
test_mymodule.py
And make sure test_module.py contains the line:
from mypackage import mymodule
Source: Pytest docs
