import re

import pytest

import voicemeeterlib
from tests import vm


class TestErrors:
    __test__ = True

    def test_it_tests_an_unknown_kind(self):
        with pytest.raises(
            voicemeeterlib.error.VMError,
            match="Unknown Voicemeeter kind 'unknown_kind'",
        ):
            voicemeeterlib.api('unknown_kind')

    def test_it_tests_an_unknown_parameter(self):
        with pytest.raises(
            voicemeeterlib.error.CAPIError,
            match='VBVMR_SetParameterFloat returned -3',
        ) as exc_info:
            vm.set('unknown.parameter', 1)

        e = exc_info.value
        assert e.code == -3
        assert e.fn_name == 'VBVMR_SetParameterFloat'

    def test_it_tests_an_unknown_config_name(self):
        EXPECTED_MSG = (
            "No config with name 'unknown' is loaded into memory",
            f'Known configs: {list(vm.configs.keys())}',
        )

        with pytest.raises(
            voicemeeterlib.error.VMError, match=re.escape('\n'.join(EXPECTED_MSG))
        ):
            vm.apply_config('unknown')

    def test_it_tests_an_invalid_config_key(self):
        CONFIG = {
            'strip-0': {'A1': True, 'B1': True, 'gain': -6.0},
            'bus-0': {'mute': True, 'eq': {'on': True}},
            'unknown-0': {'state': True},
            'vban-out-1': {'name': 'streamname'},
        }
        with pytest.raises(ValueError, match="invalid config key 'unknown-0'"):
            vm.apply(CONFIG)