from pytorch_caney.data.datamodules.finetune_datamodule \
    import get_dataset_from_dict

from pytorch_caney.data.datamodules.finetune_datamodule \
    import DATASETS

import unittest


class TestGetDatasetFromDict(unittest.TestCase):

    def test_existing_datasets(self):
        # Test existing datasets
        for dataset_name in ['modis', 'modislc9', 'modislc5']:
            dataset = get_dataset_from_dict(dataset_name)
            self.assertIsNotNone(dataset)

    def test_non_existing_dataset(self):
        # Test non-existing dataset
        invalid_dataset_name = 'invalid_dataset'
        with self.assertRaises(KeyError) as context:
            get_dataset_from_dict(invalid_dataset_name)
        expected_error_msg = f'"{invalid_dataset_name} ' + \
            'is not an existing dataset. Available datasets:' + \
            f' {DATASETS.keys()}"'
        self.assertEqual(str(context.exception), expected_error_msg)

    def test_dataset_name_case_insensitive(self):
        # Test case insensitivity
        dataset_name = 'MoDiSLC5'
        dataset = get_dataset_from_dict(dataset_name)
        self.assertIsNotNone(dataset)

# Add more test cases as needed


if __name__ == '__main__':
    unittest.main()