Source code for tests.test_shell_data

# Copyright Kevin Deldycke <kevin@deldycke.com> and contributors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test all shell definitions, detection and shell-specific groups."""

from __future__ import annotations

from extra_platforms import (
    ALL_SHELLS,
    NUSHELL,
    POWERSHELL,
    UNKNOWN_SHELL,
    Shell,
    current_shell,
    is_unknown_shell,
)




def test_shell_detection():
    """Basic shell detection sanity checks.

    Family partitions and canonical flags are enforced generically in
    ``test_trait_data.py`` and ``test_group_data.py``.
    """
    current_shell_result = current_shell()
    assert current_shell_result
    if is_unknown_shell():
        assert current_shell_result is UNKNOWN_SHELL
        assert current_shell_result not in ALL_SHELLS
    else:
        assert current_shell_result is not UNKNOWN_SHELL
        assert current_shell_result in ALL_SHELLS





def test_executable_names():
    """The two shells whose binary is not named after their ID declare it, and
    every other shell answers to its ID alone."""
    assert NUSHELL.executable_names == {"nushell", "nu"}
    assert POWERSHELL.executable_names == {"powershell", "pwsh", "powershell_ise"}
    for shell in ALL_SHELLS:
        assert isinstance(shell, Shell)
        if shell not in {NUSHELL, POWERSHELL}:
            assert shell.executable_names == {shell.id}