mirror of https://github.com/django/django.git
112 lines
4.8 KiB
Python
112 lines
4.8 KiB
Python
from django.contrib.postgres.indexes import BrinIndex, GinIndex
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from django.db import connection
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from django.test import skipUnlessDBFeature
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from . import PostgreSQLTestCase
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from .models import CharFieldModel, DateTimeArrayModel, IntegerArrayModel
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@skipUnlessDBFeature('has_brin_index_support')
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class BrinIndexTests(PostgreSQLTestCase):
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def test_suffix(self):
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self.assertEqual(BrinIndex.suffix, 'brin')
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def test_not_eq(self):
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index = BrinIndex(fields=['title'])
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index_with_page_range = BrinIndex(fields=['title'], pages_per_range=16)
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self.assertNotEqual(index, index_with_page_range)
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def test_name_auto_generation(self):
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"""
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A name longer than 30 characters (since len(BrinIndex.suffix) is 4
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rather than usual limit of 3) is okay for PostgreSQL. For this test,
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the name of the field ('datetimes') must be at least 7 characters to
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generate a name longer than 30 characters.
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"""
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index = BrinIndex(fields=['datetimes'])
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index.set_name_with_model(DateTimeArrayModel)
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self.assertEqual(index.name, 'postgres_te_datetim_abf104_brin')
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def test_deconstruction(self):
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index = BrinIndex(fields=['title'], name='test_title_brin')
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path, args, kwargs = index.deconstruct()
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self.assertEqual(path, 'django.contrib.postgres.indexes.BrinIndex')
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self.assertEqual(args, ())
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self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_brin', 'pages_per_range': None})
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def test_deconstruction_with_pages_per_range(self):
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index = BrinIndex(fields=['title'], name='test_title_brin', pages_per_range=16)
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path, args, kwargs = index.deconstruct()
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self.assertEqual(path, 'django.contrib.postgres.indexes.BrinIndex')
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self.assertEqual(args, ())
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self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_brin', 'pages_per_range': 16})
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def test_invalid_pages_per_range(self):
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with self.assertRaisesMessage(ValueError, 'pages_per_range must be None or a positive integer'):
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BrinIndex(fields=['title'], name='test_title_brin', pages_per_range=0)
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class GinIndexTests(PostgreSQLTestCase):
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def test_suffix(self):
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self.assertEqual(GinIndex.suffix, 'gin')
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def test_eq(self):
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index = GinIndex(fields=['title'])
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same_index = GinIndex(fields=['title'])
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another_index = GinIndex(fields=['author'])
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self.assertEqual(index, same_index)
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self.assertNotEqual(index, another_index)
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def test_name_auto_generation(self):
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index = GinIndex(fields=['field'])
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index.set_name_with_model(IntegerArrayModel)
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self.assertEqual(index.name, 'postgres_te_field_def2f8_gin')
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def test_deconstruction(self):
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index = GinIndex(fields=['title'], name='test_title_gin')
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path, args, kwargs = index.deconstruct()
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self.assertEqual(path, 'django.contrib.postgres.indexes.GinIndex')
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self.assertEqual(args, ())
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self.assertEqual(kwargs, {'fields': ['title'], 'name': 'test_title_gin'})
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class SchemaTests(PostgreSQLTestCase):
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def get_constraints(self, table):
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"""
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Get the indexes on the table using a new cursor.
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"""
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with connection.cursor() as cursor:
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return connection.introspection.get_constraints(cursor, table)
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def test_gin_index(self):
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# Ensure the table is there and doesn't have an index.
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self.assertNotIn('field', self.get_constraints(IntegerArrayModel._meta.db_table))
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# Add the index
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index_name = 'integer_array_model_field_gin'
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index = GinIndex(fields=['field'], name=index_name)
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with connection.schema_editor() as editor:
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editor.add_index(IntegerArrayModel, index)
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constraints = self.get_constraints(IntegerArrayModel._meta.db_table)
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# Check gin index was added
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self.assertEqual(constraints[index_name]['type'], GinIndex.suffix)
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# Drop the index
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with connection.schema_editor() as editor:
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editor.remove_index(IntegerArrayModel, index)
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self.assertNotIn(index_name, self.get_constraints(IntegerArrayModel._meta.db_table))
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@skipUnlessDBFeature('has_brin_index_support')
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def test_brin_index(self):
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index_name = 'char_field_model_field_brin'
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index = BrinIndex(fields=['field'], name=index_name, pages_per_range=4)
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with connection.schema_editor() as editor:
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editor.add_index(CharFieldModel, index)
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constraints = self.get_constraints(CharFieldModel._meta.db_table)
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self.assertEqual(constraints[index_name]['type'], BrinIndex.suffix)
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self.assertEqual(constraints[index_name]['options'], ['pages_per_range=4'])
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with connection.schema_editor() as editor:
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editor.remove_index(CharFieldModel, index)
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self.assertNotIn(index_name, self.get_constraints(CharFieldModel._meta.db_table))
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