from magicli.magicli import format_block
from unittest import mock


def get_terminal_size():
    return (80, 20)

def test_empty_lines():
    with mock.patch('os.get_terminal_size', get_terminal_size):
        min_column_width=5
        indent=2
        gap=2
        assert format_block([['', '']],
            min_column_width=min_column_width,
            indent=indent,
            gap=gap
        ) == ' '*(min_column_width+indent+gap)

def test_two_lines():
    with mock.patch('os.get_terminal_size', get_terminal_size):
        assert format_block([
            ['--help', 'Show help message.'],
            ['-v, --version', 'Show version information.'],
        ], min_column_width=0) == \
            '  --help         Show help message.\n' +\
            '  -v, --version  Show version information.'

def test_two_lines_with_minimum_width():
    with mock.patch('os.get_terminal_size', get_terminal_size):
        assert format_block([
            ['--help', 'Show help message.'],
            ['-v, --version', 'Show version information.'],
        ], min_column_width=20) == \
            '  --help                Show help message.\n' +\
            '  -v, --version         Show version information.'