mirror of https://github.com/pypa/pip
100 lines
3.0 KiB
Python
100 lines
3.0 KiB
Python
import os
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from pathlib import Path
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from textwrap import dedent
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import pytest
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from pip._internal.exceptions import InstallationError, InvalidPyProjectBuildRequires
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from pip._internal.req import InstallRequirement
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from tests.lib import TestData
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@pytest.mark.parametrize(
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("source", "expected"),
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[
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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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)
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def test_use_pep517(shared_data: TestData, source: str, expected: bool) -> None:
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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 = shared_data.src.joinpath(source)
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req = InstallRequirement(None, None)
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req.source_dir = os.fspath(src) # make req believe it has been unpacked
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req.load_pyproject_toml()
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assert req.use_pep517 is expected
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def test_use_pep517_rejects_setup_cfg_only(shared_data: TestData) -> None:
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"""
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Test that projects with setup.cfg but no pyproject.toml are rejected.
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"""
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src = shared_data.src.joinpath("pep517_setup_cfg_only")
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req = InstallRequirement(None, None)
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req.source_dir = os.fspath(src) # make req believe it has been unpacked
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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 (
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"does not appear to be a Python project: "
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"neither 'setup.py' nor 'pyproject.toml' found" in err_msg
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)
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@pytest.mark.parametrize(
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("source", "msg"),
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[
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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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)
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def test_disabling_pep517_invalid(shared_data: TestData, source: str, msg: str) -> None:
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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 = shared_data.src.joinpath(source)
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req = InstallRequirement(None, None)
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req.source_dir = os.fspath(src) # make req believe it has been unpacked
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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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@pytest.mark.parametrize(
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("spec",), [("./foo",), ("git+https://example.com/pkg@dev#egg=myproj",)]
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)
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def test_pep517_parsing_checks_requirements(tmpdir: Path, spec: str) -> None:
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tmpdir.joinpath("pyproject.toml").write_text(
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dedent(
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f"""
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[build-system]
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requires = [{spec!r}]
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build-backend = "foo"
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"""
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)
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)
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req = InstallRequirement(None, None)
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req.source_dir = os.fspath(tmpdir) # make req believe it has been unpacked
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with pytest.raises(InvalidPyProjectBuildRequires) as e:
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req.load_pyproject_toml()
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error = e.value
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assert str(req) in error.message
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assert error.context
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assert "build-system.requires" in error.context
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assert "contains an invalid requirement" in error.context
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assert error.hint_stmt
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assert "PEP 518" in error.hint_stmt
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