from unittest.mock import patch
import pytest

from simplezfs.exceptions import ValidationError
from simplezfs.types import Dataset, DatasetType
from simplezfs.validation import validate_dataset_path


class TestTypesDataset:

    @patch('os.path.exists')
    @pytest.mark.parametrize('identifier,name,parent,dstype,pool', [
        ('pool/test', 'test', 'pool', DatasetType.FILESET, 'pool'),
        ('pool/test@st', 'test@st', 'pool', DatasetType.SNAPSHOT, 'pool'),
        ('pool/test1/test@snap-12', 'test@snap-12', 'pool/test1', DatasetType.SNAPSHOT, 'pool'),
        ('tank/test#bm1', 'test#bm1', 'tank', DatasetType.BOOKMARK, 'tank'),
        ('tank/test1/test#bmark-12', 'test#bmark-12', 'tank/test1', DatasetType.BOOKMARK, 'tank'),
        ('pool/test2', 'test2', 'pool', DatasetType.VOLUME, 'pool'),
        ('pool/test2/test', 'test', 'pool/test2', DatasetType.VOLUME, 'pool'),
    ])
    def test_from_string_valid(self, exists, identifier, name, parent, dstype, pool):
        '''
        Tests the happy path.
        '''
        validate_dataset_path(identifier)

        exists.return_value = dstype == DatasetType.VOLUME

        ds = Dataset.from_string(identifier)
        assert isinstance(ds, Dataset)
        assert ds.name == name
        assert ds.parent == parent
        assert ds.type == dstype
        assert ds.full_path == identifier
        assert ds.pool == pool

    @pytest.mark.parametrize('identifier', [' /asd', ' /asd', '\0/asd', 'mirrored/asd', 'raidz fun/asd'])
    def test_from_string_invalid(self, identifier):
        with pytest.raises(ValidationError):
            Dataset.from_string(identifier)