Fix path validate. (#311)

Author: moromimay

butterfree/clients/spark_client.py

@@ -58,7 +58,7 @@ def read(
         """
         if not isinstance(format, str):
             raise ValueError("format needs to be a string with the desired read format")
-        if not isinstance(path, (str, list)):
+        if path and not isinstance(path, (str, list)):
             raise ValueError("path needs to be a string or a list of string")
 
         df_reader: Union[
@@ -67,7 +67,7 @@ def read(
 
         df_reader = df_reader.schema(schema) if schema else df_reader
 
-        return df_reader.format(format).load(path, **options)  # type: ignore
+        return df_reader.format(format).load(path=path, **options)  # type: ignore
 
     def read_table(self, table: str, database: str = None) -> DataFrame:
         """Use the SparkSession.read interface to read a metastore table.

setup.py

@@ -1,7 +1,7 @@
 from setuptools import find_packages, setup
 
 __package_name__ = "butterfree"
-__version__ = "1.2.0.dev9"
+__version__ = "1.2.0.dev10"
 __repository_url__ = "https://github.com/quintoandar/butterfree"
 
 with open("requirements.txt") as f:

tests/unit/butterfree/clients/test_spark_client.py

@@ -65,7 +65,7 @@ def test_read(
 
         # assert
         mocked_spark_read.format.assert_called_once_with(format)
-        mocked_spark_read.load.assert_called_once_with(path, **options)
+        mocked_spark_read.load.assert_called_once_with(path=path, **options)
         assert target_df.collect() == result_df.collect()
 
     @pytest.mark.parametrize(