import os
import pytest
from buildstream import _yaml
from buildstream import LoadError, LoadErrorReason
from tests.testutils.runcli import cli

# Project directory
DATA_DIR = os.path.dirname(os.path.realpath(__file__))


@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.parametrize("option_name,option_value,var_name,var_value", [

    # Test boolean
    ('bool_export', 'False', 'exported-bool', '0'),
    ('bool_export', 'True', 'exported-bool', '1'),

    # Enum
    ('enum_export', 'pony', 'exported-enum', 'pony'),
    ('enum_export', 'horsy', 'exported-enum', 'horsy'),

    # Flags
    ('flags_export', 'pony', 'exported-flags', 'pony'),
    ('flags_export', 'pony, horsy', 'exported-flags', 'horsy,pony'),
])
def test_export(cli, datafiles, option_name, option_value, var_name, var_value):
    project = os.path.join(datafiles.dirname, datafiles.basename, 'option-exports')
    result = cli.run(project=project, silent=True, args=[
        '--option', option_name, option_value,
        'show',
        '--deps', 'none',
        '--format', '%{vars}',
        'element.bst'])

    assert result.exit_code == 0
    loaded = _yaml.load_data(result.output)
    assert loaded[var_name] == var_value