from django.contrib.postgres.indexes import BrinIndex, GinIndex from django.db import connection from django.test import skipUnlessDBFeature from . import PostgreSQLTestCase from .models import CharFieldModel, IntegerArrayModel @skipUnlessDBFeature('has_brin_index_support') class BrinIndexTests(PostgreSQLTestCase): def test_repr(self): index = BrinIndex(fields=['title'], pages_per_range=4) another_index = BrinIndex(fields=['title']) self.assertEqual(repr(index), "") self.assertEqual(repr(another_index), "") def test_not_eq(self): index = BrinIndex(fields=['title']) index_with_page_range = BrinIndex(fields=['title'], pages_per_range=16) self.assertNotEqual(index, index_with_page_range) def test_deconstruction(self): index = BrinIndex(fields=['title'], name='test_title_brin') path, args, kwargs = index.deconstruct() self.assertEqual(path, 'django.contrib.postgres.indexes.BrinIndex') self.assertEqual(args, ()) self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_brin', 'pages_per_range': None}) def test_deconstruction_with_pages_per_range(self): index = BrinIndex(fields=['title'], name='test_title_brin', pages_per_range=16) path, args, kwargs = index.deconstruct() self.assertEqual(path, 'django.contrib.postgres.indexes.BrinIndex') self.assertEqual(args, ()) self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_brin', 'pages_per_range': 16}) def test_invalid_pages_per_range(self): with self.assertRaisesMessage(ValueError, 'pages_per_range must be None or a positive integer'): BrinIndex(fields=['title'], name='test_title_brin', pages_per_range=0) class GinIndexTests(PostgreSQLTestCase): def test_repr(self): index = GinIndex(fields=['title']) self.assertEqual(repr(index), "") def test_eq(self): index = GinIndex(fields=['title']) same_index = GinIndex(fields=['title']) another_index = GinIndex(fields=['author']) self.assertEqual(index, same_index) self.assertNotEqual(index, another_index) def test_name_auto_generation(self): index = GinIndex(fields=['field']) index.set_name_with_model(IntegerArrayModel) self.assertEqual(index.name, 'postgres_te_field_def2f8_gin') def test_deconstruction(self): index = GinIndex(fields=['title'], name='test_title_gin') path, args, kwargs = index.deconstruct() self.assertEqual(path, 'django.contrib.postgres.indexes.GinIndex') self.assertEqual(args, ()) self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_gin'}) class SchemaTests(PostgreSQLTestCase): def get_constraints(self, table): """ Get the indexes on the table using a new cursor. """ with connection.cursor() as cursor: return connection.introspection.get_constraints(cursor, table) def test_gin_index(self): # Ensure the table is there and doesn't have an index. self.assertNotIn('field', self.get_constraints(IntegerArrayModel._meta.db_table)) # Add the index index_name = 'integer_array_model_field_gin' index = GinIndex(fields=['field'], name=index_name) with connection.schema_editor() as editor: editor.add_index(IntegerArrayModel, index) constraints = self.get_constraints(IntegerArrayModel._meta.db_table) # Check gin index was added self.assertEqual(constraints[index_name]['type'], 'gin') # Drop the index with connection.schema_editor() as editor: editor.remove_index(IntegerArrayModel, index) self.assertNotIn(index_name, self.get_constraints(IntegerArrayModel._meta.db_table)) @skipUnlessDBFeature('has_brin_index_support') def test_brin_index(self): index_name = 'char_field_model_field_brin' index = BrinIndex(fields=['field'], name=index_name, pages_per_range=4) with connection.schema_editor() as editor: editor.add_index(CharFieldModel, index) constraints = self.get_constraints(CharFieldModel._meta.db_table) self.assertEqual(constraints[index_name]['type'], 'brin') self.assertEqual(constraints[index_name]['options'], ['pages_per_range=4']) with connection.schema_editor() as editor: editor.remove_index(CharFieldModel, index) self.assertNotIn(index_name, self.get_constraints(CharFieldModel._meta.db_table))