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