Function test_importerror

testing/test_monkeypatch.py:313–337

(pytester: Pytester)

def test_importerror(pytester: Pytester) -> None:
    p = pytester.mkpydir("package")
    p.joinpath("a.py").write_text(
        textwrap.dedent(
            """\
        import doesnotexist

        x = 1
    """
        )
    )
    pytester.path.joinpath("test_importerror.py").write_text(
        textwrap.dedent(
            """\
        def test_importerror(monkeypatch):
            monkeypatch.setattr('package.a.x', 2)
    """
        )
    )
    result = pytester.runpytest()
    result.stdout.fnmatch_lines(
        """
        *import error in package.a: No module named 'doesnotexist'*
    """
    )


class Sample: