test_ok2/testing/test_nodes.py

import py

import pytest
from _pytest import nodes
from _pytest.pytester import Testdir


@pytest.mark.parametrize(
    "baseid, nodeid, expected",
    (
        ("", "", True),
        ("", "foo", True),
        ("", "foo/bar", True),
        ("", "foo/bar::TestBaz", True),
        ("foo", "food", False),
        ("foo/bar::TestBaz", "foo/bar", False),
        ("foo/bar::TestBaz", "foo/bar::TestBop", False),
        ("foo/bar", "foo/bar::TestBop", True),
    ),
)
def test_ischildnode(baseid: str, nodeid: str, expected: bool) -> None:
    result = nodes.ischildnode(baseid, nodeid)
    assert result is expected


def test_node_from_parent_disallowed_arguments() -> None:
    with pytest.raises(TypeError, match="session is"):
        nodes.Node.from_parent(None, session=None)  # type: ignore[arg-type]
    with pytest.raises(TypeError, match="config is"):
        nodes.Node.from_parent(None, config=None)  # type: ignore[arg-type]


def test_std_warn_not_pytestwarning(testdir: Testdir) -> None:
    items = testdir.getitems(
        """
        def test():
            pass
    """
    )
    with pytest.raises(ValueError, match=".*instance of PytestWarning.*"):
        items[0].warn(UserWarning("some warning"))  # type: ignore[arg-type]


def test__check_initialpaths_for_relpath() -> None:
    """Ensure that it handles dirs, and does not always use dirname."""
    cwd = py.path.local()

    class FakeSession1:
        _initialpaths = [cwd]

    assert nodes._check_initialpaths_for_relpath(FakeSession1, cwd) == ""

    sub = cwd.join("file")

    class FakeSession2:
        _initialpaths = [cwd]

    assert nodes._check_initialpaths_for_relpath(FakeSession2, sub) == "file"

    outside = py.path.local("/outside")
    assert nodes._check_initialpaths_for_relpath(FakeSession2, outside) is None


def test_failure_with_changed_cwd(testdir):
    """
    Test failure lines should use absolute paths if cwd has changed since
    invocation, so the path is correct (#6428).
    """
    p = testdir.makepyfile(
        """
        import os
        import pytest

        @pytest.fixture
        def private_dir():
            out_dir = 'ddd'
            os.mkdir(out_dir)
            old_dir = os.getcwd()
            os.chdir(out_dir)
            yield out_dir
            os.chdir(old_dir)

        def test_show_wrong_path(private_dir):
            assert False
    """
    )
    result = testdir.runpytest()
    result.stdout.fnmatch_lines([str(p) + ":*: AssertionError", "*1 failed in *"])