mirror of https://github.com/pypa/pip
42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
import pytest
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from pip._internal.exceptions import InstallationError
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from pip._internal.req import InstallRequirement
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@pytest.mark.parametrize(('source', 'expected'), [
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("pep517_setup_and_pyproject", True),
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("pep517_setup_only", False),
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("pep517_pyproject_only", True),
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])
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def test_use_pep517(data, source, expected):
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"""
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Test that we choose correctly between PEP 517 and legacy code paths
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"""
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src = data.src.joinpath(source)
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req = InstallRequirement(None, None, source_dir=src)
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req.load_pyproject_toml()
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assert req.use_pep517 is expected
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@pytest.mark.parametrize(('source', 'msg'), [
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("pep517_setup_and_pyproject", "specifies a build backend"),
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("pep517_pyproject_only", "does not have a setup.py"),
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])
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def test_disabling_pep517_invalid(data, source, msg):
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"""
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Test that we fail if we try to disable PEP 517 when it's not acceptable
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"""
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src = data.src.joinpath(source)
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req = InstallRequirement(None, None, source_dir=src)
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# Simulate --no-use-pep517
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req.use_pep517 = False
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with pytest.raises(InstallationError) as e:
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req.load_pyproject_toml()
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err_msg = e.value.args[0]
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assert "Disabling PEP 517 processing is invalid" in err_msg
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assert msg in err_msg
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