from ehrapy._compat import _check_module_importable, _shell_command_accessible

def test_check_module_importable_true():

    assert _check_module_importable("math") is True

def test_check_module_importable_false():

    assert _check_module_importable("nonexistentmodule12345") is False

def test_shell_command_accessible_true(monkeypatch):

    def mock_popen(*args, **kwargs):

        class MockProcess:

            def __init__(self):

                self.returncode = 0

            def communicate(self):

                return ("output", "")

        return MockProcess()

    monkeypatch.setattr("subprocess.Popen", mock_popen)

    assert _shell_command_accessible(["echo", "hello"]) is True

def test_shell_command_accessible_false(monkeypatch):

    def mock_popen(*args, **kwargs):

        class MockProcess:

            def __init__(self):

                self.returncode = 1

            def communicate(self):

                return ("", "error")

        return MockProcess()

    monkeypatch.setattr("subprocess.Popen", mock_popen)

    assert _shell_command_accessible(["nonexistentcommand"]) is False