94 lines
3.3 KiB
Python
94 lines
3.3 KiB
Python
from __future__ import annotations
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import locale
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from pathlib import Path
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from random import shuffle
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from typing import TYPE_CHECKING, Callable, Iterator
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from unittest.mock import Mock
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import pytest
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from pipdeptree._models import PackageDAG
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if TYPE_CHECKING:
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from tests.our_types import MockGraph
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@pytest.fixture(scope="session")
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def mock_pkgs() -> Callable[[MockGraph], Iterator[Mock]]:
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def func(simple_graph: MockGraph) -> Iterator[Mock]:
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for node, children in simple_graph.items():
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nk, nv = node
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m = Mock(metadata={"Name": nk}, version=nv)
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reqs = []
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for ck, cv in children:
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r = ck
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for item in cv:
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if item:
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rs, rv = item
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r = r + rs + rv
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if item != cv[-1]:
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r += ","
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reqs.append(r)
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m.requires = reqs
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yield m
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return func
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@pytest.fixture
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def example_dag(mock_pkgs: Callable[[MockGraph], Iterator[Mock]]) -> PackageDAG:
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packages: MockGraph = {
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("a", "3.4.0"): [("b", [(">=", "2.0.0")]), ("c", [(">=", "5.7.1")])],
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("b", "2.3.1"): [("d", [(">=", "2.30"), ("<", "2.42")])],
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("c", "5.10.0"): [("d", [(">=", "2.30")]), ("e", [(">=", "0.12.1")])],
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("d", "2.35"): [("e", [(">=", "0.9.0")])],
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("e", "0.12.1"): [],
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("f", "3.1"): [("b", [(">=", "2.1.0")])],
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("g", "6.8.3rc1"): [("e", [(">=", "0.9.0")]), ("f", [(">=", "3.0.0")])],
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}
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return PackageDAG.from_pkgs(list(mock_pkgs(packages)))
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@pytest.fixture
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def randomized_example_dag(example_dag: PackageDAG) -> PackageDAG:
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"""Returns a copy of the package tree fixture with dependencies in randomized order."""
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# Extract the dependency graph from the package tree and randomize it.
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randomized_graph = {}
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randomized_nodes = list(example_dag._obj.keys()) # noqa: SLF001
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shuffle(randomized_nodes)
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for node in randomized_nodes:
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edges = example_dag._obj[node].copy() # noqa: SLF001
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shuffle(edges)
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randomized_graph[node] = edges
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assert set(randomized_graph) == set(example_dag._obj) # noqa: SLF001
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# Create a randomized package tree.
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randomized_dag = PackageDAG(randomized_graph)
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assert len(example_dag) == len(randomized_dag)
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return randomized_dag
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@pytest.fixture
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def fake_dist(tmp_path: Path) -> Path:
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"""Creates a fake site package (that you get using Path.parent) and a fake dist-info called bar-2.4.5.dist-info."""
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fake_site_pkgs = tmp_path / "site-packages"
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fake_dist_path = fake_site_pkgs / "bar-2.4.5.dist-info"
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fake_dist_path.mkdir(parents=True)
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fake_metadata = Path(fake_dist_path) / "METADATA"
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with fake_metadata.open("w", encoding=locale.getpreferredencoding(False)) as f:
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f.write("Metadata-Version: 2.3\nName: bar\nVersion: 2.4.5\n")
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return fake_dist_path
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@pytest.fixture
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def fake_dist_with_invalid_metadata(tmp_path: Path) -> Path:
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"Similar to `fake_dist()`, but creates an invalid METADATA file."
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fake_site_pkgs = tmp_path / "site-packages"
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fake_dist_path = fake_site_pkgs / "bar-2.4.5.dist-info"
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fake_dist_path.mkdir(parents=True)
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fake_metadata = Path(fake_dist_path) / "METADATA"
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fake_metadata.touch()
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return fake_dist_path
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