mirror of
https://github.com/pypa/pip
synced 2023-12-13 21:30:23 +01:00
29 lines
1.1 KiB
Python
29 lines
1.1 KiB
Python
from pip._vendor import pytoml
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from pip._internal.build_env import BuildEnvironment
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from pip._internal.download import PipSession
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from pip._internal.index import PackageFinder
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from pip._internal.req import InstallRequirement
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def make_project(tmpdir, requires=[], backend=None):
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buildsys = {'requires': requires}
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if backend:
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buildsys['build-backend'] = backend
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data = pytoml.dumps({'build-system': buildsys})
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tmpdir.join('pyproject.toml').write(data)
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return tmpdir
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def test_backend(tmpdir, data):
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"""Can we call a requirement's backend successfully?"""
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project = make_project(tmpdir, backend="dummy_backend")
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req = InstallRequirement(None, None, source_dir=project)
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req.load_pyproject_toml()
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env = BuildEnvironment()
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finder = PackageFinder([data.backends], [], session=PipSession())
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env.install_requirements(finder, ["dummy_backend"], "Installing")
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assert not env.missing_requirements(["dummy_backend"])
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assert hasattr(req.pep517_backend, 'build_wheel')
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with env:
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assert req.pep517_backend.build_wheel("dir") == "Backend called"
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