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path: root/tests/test_argparse_custom.py
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# flake8: noqa E302
"""
Unit/functional testing for argparse customizations in cmd2
"""
import pytest
from cmd2.argparse_custom import Cmd2ArgParser


def test_acarg_narg_empty_tuple():
    with pytest.raises(ValueError) as excinfo:
        parser = Cmd2ArgParser(prog='test')
        parser.add_argument('invalid_tuple', nargs=())
    assert 'Ranged values for nargs must be a tuple of 2 integers' in str(excinfo.value)


def test_acarg_narg_single_tuple():
    with pytest.raises(ValueError) as excinfo:
        parser = Cmd2ArgParser(prog='test')
        parser.add_argument('invalid_tuple', nargs=(1,))
    assert 'Ranged values for nargs must be a tuple of 2 integers' in str(excinfo.value)


def test_acarg_narg_tuple_triple():
    with pytest.raises(ValueError) as excinfo:
        parser = Cmd2ArgParser(prog='test')
        parser.add_argument('invalid_tuple', nargs=(1, 2, 3))
    assert 'Ranged values for nargs must be a tuple of 2 integers' in str(excinfo.value)


def test_acarg_narg_tuple_order():
    with pytest.raises(ValueError) as excinfo:
        parser = Cmd2ArgParser(prog='test')
        parser.add_argument('invalid_tuple', nargs=(2, 1))
    assert 'Invalid nargs range. The first value must be less than the second' in str(excinfo.value)


def test_acarg_narg_tuple_negative():
    with pytest.raises(ValueError) as excinfo:
        parser = Cmd2ArgParser(prog='test')
        parser.add_argument('invalid_tuple', nargs=(-1, 1))
    assert 'Negative numbers are invalid for nargs range' in str(excinfo.value)


def test_acarg_narg_tuple_zero_base():
    parser = Cmd2ArgParser(prog='test')
    parser.add_argument('tuple', nargs=(0, 3))


def test_acarg_narg_tuple_zero_to_one():
    parser = Cmd2ArgParser(prog='test')
    parser.add_argument('tuple', nargs=(0, 1))