112 lines
4.7 KiB
Python
112 lines
4.7 KiB
Python
# Copyright 2013-2017 DataStax, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest # noqa
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from cassandra.cqlengine.columns import Column
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from cassandra.cqlengine.statements import SelectStatement, WhereClause
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from cassandra.cqlengine.operators import *
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import six
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class SelectStatementTests(unittest.TestCase):
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def test_single_field_is_listified(self):
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""" tests that passing a string field into the constructor puts it into a list """
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ss = SelectStatement('table', 'field')
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self.assertEqual(ss.fields, ['field'])
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def test_field_rendering(self):
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""" tests that fields are properly added to the select statement """
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ss = SelectStatement('table', ['f1', 'f2'])
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self.assertTrue(six.text_type(ss).startswith('SELECT "f1", "f2"'), six.text_type(ss))
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self.assertTrue(str(ss).startswith('SELECT "f1", "f2"'), str(ss))
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def test_none_fields_rendering(self):
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""" tests that a '*' is added if no fields are passed in """
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ss = SelectStatement('table')
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self.assertTrue(six.text_type(ss).startswith('SELECT *'), six.text_type(ss))
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self.assertTrue(str(ss).startswith('SELECT *'), str(ss))
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def test_table_rendering(self):
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ss = SelectStatement('table')
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self.assertTrue(six.text_type(ss).startswith('SELECT * FROM table'), six.text_type(ss))
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self.assertTrue(str(ss).startswith('SELECT * FROM table'), str(ss))
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def test_where_clause_rendering(self):
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ss = SelectStatement('table')
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ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
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self.assertEqual(six.text_type(ss), 'SELECT * FROM table WHERE "a" = %(0)s', six.text_type(ss))
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def test_count(self):
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ss = SelectStatement('table', count=True, limit=10, order_by='d')
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ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
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self.assertEqual(six.text_type(ss), 'SELECT COUNT(*) FROM table WHERE "a" = %(0)s LIMIT 10', six.text_type(ss))
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self.assertIn('LIMIT', six.text_type(ss))
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self.assertNotIn('ORDER', six.text_type(ss))
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def test_distinct(self):
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ss = SelectStatement('table', distinct_fields=['field2'])
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ss.add_where(Column(db_field='field1'), EqualsOperator(), 'b')
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self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field2" FROM table WHERE "field1" = %(0)s', six.text_type(ss))
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ss = SelectStatement('table', distinct_fields=['field1', 'field2'])
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self.assertEqual(six.text_type(ss), 'SELECT DISTINCT "field1", "field2" FROM table')
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ss = SelectStatement('table', distinct_fields=['field1'], count=True)
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self.assertEqual(six.text_type(ss), 'SELECT DISTINCT COUNT("field1") FROM table')
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def test_context(self):
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ss = SelectStatement('table')
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ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
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self.assertEqual(ss.get_context(), {'0': 'b'})
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def test_context_id_update(self):
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""" tests that the right things happen the the context id """
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ss = SelectStatement('table')
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ss.add_where(Column(db_field='a'), EqualsOperator(), 'b')
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self.assertEqual(ss.get_context(), {'0': 'b'})
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self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(0)s')
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ss.update_context_id(5)
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self.assertEqual(ss.get_context(), {'5': 'b'})
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self.assertEqual(str(ss), 'SELECT * FROM table WHERE "a" = %(5)s')
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def test_additional_rendering(self):
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ss = SelectStatement(
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'table',
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None,
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order_by=['x', 'y'],
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limit=15,
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allow_filtering=True
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)
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qstr = six.text_type(ss)
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self.assertIn('LIMIT 15', qstr)
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self.assertIn('ORDER BY x, y', qstr)
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self.assertIn('ALLOW FILTERING', qstr)
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def test_limit_rendering(self):
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ss = SelectStatement('table', None, limit=10)
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qstr = six.text_type(ss)
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self.assertIn('LIMIT 10', qstr)
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ss = SelectStatement('table', None, limit=0)
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qstr = six.text_type(ss)
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self.assertNotIn('LIMIT', qstr)
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ss = SelectStatement('table', None, limit=None)
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qstr = six.text_type(ss)
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self.assertNotIn('LIMIT', qstr)
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