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PyNose

swMATH ID: 39801
Software Authors: Tongjie Wang, Yaroslav Golubev, Oleg Smirnov, Jiawei Li, Timofey Bryksin, Iftekhar Ahmed
Description: PyNose: A Test Smell Detector For Python. Similarly to production code, code smells also occur in test code, where they are called test smells. Test smells have a detrimental effect not only on test code but also on the production code that is being tested. To date, the majority of the research on test smells has been focusing on programming languages such as Java and Scala. However, there are no available automated tools to support the identification of test smells for Python, despite its rapid growth in popularity in recent years. In this paper, we strive to extend the research to Python, build a tool for detecting test smells in this language, and conduct an empirical analysis of test smells in Python projects. We started by gathering a list of test smells from existing research and selecting test smells that can be considered language-agnostic or have similar functionality in Python’s standard Unittest framework. In total, we identified 17 diverse test smells. Additionally, we searched for Python-specific test smells by mining frequent code change patterns that can be considered as either fixing or introducing test smells. Based on these changes, we proposed our own test smell called Suboptimal assert. To detect all these test smells, we developed a tool called PyNose in the form of a plugin to PyCharm, a popular Python IDE. Finally, we conducted a large-scale empirical investigation aimed at analyzing the prevalence of test smells in Python code. Our results show that 98
Homepage: https://arxiv.org/abs/2108.04639
Source Code:  https://github.com/jetbrains-research/pynose
Dependencies: Python
Keywords: Software Engineering; arXiv_cs.SE; PyNose; Test Smell Detector; Python; plugin to PyCharm; code smells; empirical studie; code change patterns; mining software repositories
Related Software: gensim; Girder; Review Board; Numba; pytest; GHTorrent; ObsPy; tsDetect; JNose; TestQ; PythonChangeMiner; PyCharm; Python
Cited in: 0 Documents

Standard Articles

1 Publication describing the Software Year
PyNose: A Test Smell Detector For Python arXiv
Tongjie Wang, Yaroslav Golubev, Oleg Smirnov, Jiawei Li, Timofey Bryksin, Iftekhar Ahmed
2021