taichi-dev/taichi

[misc] python tests error that doesn't affect program execution

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#1,119 opened on Jun 3, 2020

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good first issuepotential bugpython

Description

Describe the bug When running ti test, the main program throws an error saying that it is unable to recognize the argument -n1

Log/Screenshots

Running python tests...

ERROR: usage: ti [options] [file_or_dir] [file_or_dir] [...] ti: error: unrecognized arguments: -n1 inifile: None rootdir: /home/peiyuanl/taichi_dev/taichi

========================================================== test session starts =========================================================== platform linux -- Python 3.7.6, pytest-5.4.2, py-1.8.1, pluggy-0.13.1 rootdir: [omitted] plugins: xdoctest-0.12.0, cov-2.9.0

(the test successfully completed)

To Reproduce

Run ti test after correct setup and compilation on Ubuntu 16.04

Contributor guide

Tech stack
python
Domain
testing
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Pythonpytest
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80
Research direction
Investigate the `ti test` command implementation, likely in the `ti` script or test runner configuration. The ` n1` argument is used for parallel test execution (pytest xdist). Ensure that `pytest xdist` is installed or conditionally add the argument. Check the pytest version and add a fallback. Files to look at: `ti` command script in the repository root or `python/taichi/testing.py`.