问题
I'm having a problem running unit tests. I have a project structure like this:
Given this directory
who-said-what/
|
|_ wave_encoder.py
|
|_ tests/
|_ test_wave_encoder.py
where test_wave_encoder.py looks like this:
from wave_encoder import *
class TestEncoder():
def test_plot_no_fit1(self):
encoder = WaveEncoder()
self.assertRaises(ValueError, encoder.plot_signal)
def test_plot_no_fit2(self):
encoder = WaveEncoder()
self.assertRaises(ValueError, encoder.plot_transform)
def test_plot_no_fit3(self):
encoder = WaveEncoder()
self.assertRaises(ValueError, encoder.plot_components)
If I run this test file individually, no issues. However, if I try to run pytest from any directory in the project:
pytest -v --cov ./tests
# or
pytest -v --cov .
I get a ModuleNotFoundError: No module named 'wave_encoder'.
However, if I move test_wave_encoder.py to the parent directory, it does work (there are other errors, but that's a different question).
I don't really want a bunch of test files in the parent directory. How do I sort this out?
回答1:
Step 1: place an empty conftest.py in your root.
Step 2: run tests from root folder with python -m pytest
That should work.
来源：https://stackoverflow.com/questions/63273804/why-is-module-not-found-only-when-doing-unit-testing-with-pytest