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The PYthoN General UnIt Test geNerator is a test-generation tool for Python

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Pynguin find classes that are not part of production code

darioamorosodaragona-tuni opened this issue · comments

commented

Describe the bug
I'm using Pynguin to generate test cases for a Python script. The script does not contain classes, but only functions (14 functions).
But when i use Pynguin it finds more than 600 classes and the generation of test cases takes a lot of time.

To Reproduce
Steps to reproduce the behavior:

  1. Use the latest Pynguin version

  2. Use the following command line arguments to Pynguin:

pynguin --project-path ./coupling --output-path ./tests/developer_coupling/ --module-name developer_coupling -v  
[13:12:03] INFO     Start Pynguin Test Generation…                                                                                                              generator.py:107
           INFO     Collecting static constants from module under test                                                                                          generator.py:208
           INFO     No constants found                                                                                                                          generator.py:211
           INFO     Setting up runtime collection of constants                                                                                                  generator.py:220
[13:12:09] INFO     Analyzed project to create test cluster                                                                                                       module.py:1318
           INFO     Modules:      49                                                                                                                              module.py:1319
           INFO     Functions:   109                                                                                                                              module.py:1320
           INFO     Classes:     166                                                                                                                              module.py:1321

Expected behavior
I expect that only the classes and functions on my script will be tested.

Software Version (please complete the following information):

  • OS: macOS
  • Python version Python 3.10
  • Pynguin Version latest
commented

Hi,
If I am not mistaken, Pynguin checks all dependencies from the imports of your code recursively, meaning that it will analyze packages that are not explicitly declared in your module, just because they were imported. Usually, many projects rely on objects from their dependencies.

It is hard to tell by just looking at the first lines of Pynguin's logging, but, did you import anything that might have too many interprocedural calls? Also, I am not sure if you mean that the test generation takes too much time, because of each iteration, because of the initial Test Cluster generation, or because of the whole process. Did you try setting the argument --maximum_search_time to a low value?

Best wishes