from pathlib import Path
from unittest.mock import patch

import pytest
from traitlets.tests.utils import check_help_all_output

from jupyter_server.utils import is_namespace_package
from jupyter_server.utils import url_escape
from jupyter_server.utils import url_unescape


def test_help_output():
    check_help_all_output("jupyter_server")


@pytest.mark.parametrize(
    "unescaped,escaped",
    [
        ("/this is a test/for spaces/", "/this%20is%20a%20test/for%20spaces/"),
        ("notebook with space.ipynb", "notebook%20with%20space.ipynb"),
        ("/path with a/notebook and space.ipynb", "/path%20with%20a/notebook%20and%20space.ipynb"),
        (
            "/ !@$#%^&* / test %^ notebook @#$ name.ipynb",
            "/%20%21%40%24%23%25%5E%26%2A%20/%20test%20%25%5E%20notebook%20%40%23%24%20name.ipynb",
        ),
    ],
)
def test_url_escaping(unescaped, escaped):
    # Test escaping.
    path = url_escape(unescaped)
    assert path == escaped
    # Test unescaping.
    path = url_unescape(escaped)
    assert path == unescaped


@pytest.mark.parametrize(
    "name, expected",
    [
        # returns True if it is a namespace package
        ("test_namespace", True),
        # returns False if it isn't a namespace package
        ("sys", False),
        ("jupyter_server", False),
        # returns None if it isn't importable
        ("not_a_python_namespace", None),
    ],
)
def test_is_namespace_package(monkeypatch, name, expected):
    monkeypatch.syspath_prepend(Path(__file__).parent / "namespace-package-test")

    assert is_namespace_package(name) is expected


def test_is_namespace_package_no_spec():
    with patch("importlib.util.find_spec") as mocked_spec:
        mocked_spec.side_effect = ValueError()

        assert is_namespace_package("dummy") is None
        mocked_spec.assert_called_once_with("dummy")