Ensure a test produces no garbage
The purpose of this plugin is ensuring that portions of your Python code do not produce garbage or manually invoke garbage collection.
When the nogarbage pytest fixture is added to a test, it will cause an error under the following conditions:
- Garbage was collected after the test was run (circular references were remaining after the test was broken down).
- Garbage was explicitly collected (gc.collect()) during the test. Automatic garbage collection sweeps are disabled during the test.
You should use this plugin when:
- You intend to run a program with garbage collection disabled in production.
- You wish to verify elimination of garbage collection overhead produced by frequently called functions.
- Python 3.7+
- This plugin is only tested against CPython.
Add the nogarbage fixture to your test to ensure it does not produce garbage:
def test_circular(nogarbage): l1 =  l2 = [l1] l2.append(l1) # ERROR: Garbage collected after test. def test_collect(nogarbage): import gc gc.collect() # ERROR: Garbage collected during test.
Distributed under the terms of the MIT license, “pytest-nogarbage” is free and open source software.
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