def test_extraction_with_database_specified(self) -> None:
"""
Test DATABASE_KEY in extractor result
"""
with patch.object(SQLAlchemyExtractor,
'_get_connection') as mock_connection:
connection = MagicMock()
mock_connection.return_value = connection
sql_execute = MagicMock()
connection.execute = sql_execute
sql_execute.return_value = [{
'schema': 'test_schema',
'table_name': 'test_table',
'last_updated_time': 1000,
'cluster': 'MY_CLUSTER',
}]
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
actual = extractor.extract()
expected = TableLastUpdated(schema='test_schema',
table_name='test_table',
last_updated_time_epoch=1000,
db=self.database_key,
cluster='MY_CLUSTER')
self.assertEqual(expected.__repr__(), actual.__repr__())
self.assertIsNone(extractor.extract())
def test_extraction_with_single_result(self) -> None:
"""
Test Extraction with default cluster and database and with one table as result
"""
with patch.object(SQLAlchemyExtractor,
'_get_connection') as mock_connection:
connection = MagicMock()
mock_connection.return_value = connection
sql_execute = MagicMock()
connection.execute = sql_execute
sql_execute.return_value = [{
'schema':
'test_schema',
'table_name':
'test_table',
'last_updated_time':
1000,
'cluster':
self.conf['extractor.snowflake_table_last_updated.{}'.format(
SnowflakeTableLastUpdatedExtractor.CLUSTER_KEY)],
}]
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
actual = extractor.extract()
expected = TableLastUpdated(schema='test_schema',
table_name='test_table',
last_updated_time_epoch=1000,
db='snowflake',
cluster='MY_CLUSTER')
self.assertEqual(expected.__repr__(), actual.__repr__())
self.assertIsNone(extractor.extract())
def test_sql_statement(self) -> None:
"""
Test DATABASE_KEY in extractor sql stmt
"""
with patch.object(SQLAlchemyExtractor, '_get_connection'):
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
self.assertFalse(self.database_key in extractor.sql_stmt)
def test_sql_statement(self) -> None:
"""
Test cluster_key in extractor sql stmt
"""
with patch.object(SQLAlchemyExtractor, '_get_connection'):
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
self.assertTrue(self.cluster_key in extractor.sql_stmt)
def test_sql_statement(self) -> None:
"""
test where clause in extractor sql statement
"""
with patch.object(SQLAlchemyExtractor, '_get_connection'):
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
self.assertTrue(self.where_clause_suffix in extractor.sql_stmt)
def test_sql_statement(self) -> None:
"""
Ensure catalog is used as cluster in extract sql stmt
"""
with patch.object(SQLAlchemyExtractor, '_get_connection'):
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
self.assertTrue('table_catalog' in extractor.sql_stmt)
self.assertFalse(self.cluster_key in extractor.sql_stmt)
def test_extraction_with_empty_query_result(self) -> None:
"""
Test Extraction with empty result from query
"""
with patch.object(SQLAlchemyExtractor, '_get_connection'):
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
results = extractor.extract()
self.assertIsNone(results)
def test_extraction_with_multiple_result(self) -> None:
"""
Test Extraction with default cluster and database and with multiple tables as result
"""
with patch.object(SQLAlchemyExtractor,
'_get_connection') as mock_connection:
connection = MagicMock()
mock_connection.return_value = connection
sql_execute = MagicMock()
connection.execute = sql_execute
default_cluster = self.conf[
'extractor.snowflake_table_last_updated.{}'.format(
SnowflakeTableLastUpdatedExtractor.CLUSTER_KEY)]
table = {
'schema': 'test_schema1',
'table_name': 'test_table1',
'last_updated_time': 1000,
'cluster': default_cluster
}
table1 = {
'schema': 'test_schema1',
'table_name': 'test_table2',
'last_updated_time': 2000,
'cluster': default_cluster
}
table2 = {
'schema': 'test_schema2',
'table_name': 'test_table3',
'last_updated_time': 3000,
'cluster': default_cluster
}
sql_execute.return_value = [table, table1, table2]
extractor = SnowflakeTableLastUpdatedExtractor()
extractor.init(self.conf)
expected = TableLastUpdated(schema='test_schema1',
table_name='test_table1',
last_updated_time_epoch=1000,
db='snowflake',
cluster='MY_CLUSTER')
self.assertEqual(expected.__repr__(),
extractor.extract().__repr__())
expected = TableLastUpdated(schema='test_schema1',
table_name='test_table2',
last_updated_time_epoch=2000,
db='snowflake',
cluster='MY_CLUSTER')
self.assertEqual(expected.__repr__(),
extractor.extract().__repr__())
expected = TableLastUpdated(schema='test_schema2',
table_name='test_table3',
last_updated_time_epoch=3000,
db='snowflake',
cluster='MY_CLUSTER')
self.assertEqual(expected.__repr__(),
extractor.extract().__repr__())
self.assertIsNone(extractor.extract())