import pytest


@pytest.mark.parametrize(
    "app_name, candidate",
    [
        ("helloworld", "helloworld"),
        ("HelloWorld", "HelloWorld"),
        ("hello-world", "hello_world"),
        ("hello_world", "hello_world"),
    ],
)
def test_make_module_name(new_command, app_name, candidate):
    """An app name can be converted into a valid class name."""
    module_name = new_command.make_module_name(app_name)
    assert module_name == candidate