| import builtins | |
| import os | |
| import subprocess | |
| import sys | |
| import textwrap | |
| def test_simple(): | |
| assert 1 + 1 == 2 | |
| def test_override_builtins(): | |
| import pylab # type: ignore | |
| ok_to_override = { | |
| '__name__', | |
| '__doc__', | |
| '__package__', | |
| '__loader__', | |
| '__spec__', | |
| 'any', | |
| 'all', | |
| 'sum', | |
| 'divmod' | |
| } | |
| overridden = {key for key in {*dir(pylab)} & {*dir(builtins)} | |
| if getattr(pylab, key) != getattr(builtins, key)} | |
| assert overridden <= ok_to_override | |
| def test_lazy_imports(): | |
| source = textwrap.dedent(""" | |
| import sys | |
| import matplotlib.figure | |
| import matplotlib.backend_bases | |
| import matplotlib.pyplot | |
| assert 'matplotlib._tri' not in sys.modules | |
| assert 'matplotlib._qhull' not in sys.modules | |
| assert 'matplotlib._contour' not in sys.modules | |
| assert 'urllib.request' not in sys.modules | |
| """) | |
| subprocess.check_call( | |
| [sys.executable, '-c', source], | |
| env={**os.environ, "MPLBACKEND": "", "MATPLOTLIBRC": os.devnull}) | |