def test_find_by_value_method(self):
v1 = TestVertexModel.create(name='v1', test_val=-99)
v2 = TestVertexModel.create(name='v2', test_val=-99)
v3 = TestVertexModelDouble.create(name='v3', test_val=-100.0)
self.assertEqual(len(TestVertexModel.find_by_value('name', 'v1')), 1)
self.assertEqual(len(TestVertexModel.find_by_value('test_val', -99)), 2)
self.assertEqual(len(TestVertexModel.find_by_value('name', 'bar')), 0)
self.assertEqual(TestVertexModel.find_by_value('name', 'v1')[0], v1)
self.assertEqual(len(TestVertexModelDouble.find_by_value('test_val', -100.0)), 1)
v1.delete()
v2.delete()
v3.delete()
