def test_schema_editor_add_list_partition(): """Tests whether adding a list partition works.""" model = define_fake_partitioned_model( {"name": models.TextField()}, { "method": PostgresPartitioningMethod.LIST, "key": ["name"] }, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_list_partition(model, name="mypartition", values=["1"], comment="test") table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 1 assert table.partitions[0].name == "mypartition" assert ( table.partitions[0].full_name == f"{model._meta.db_table}_mypartition") assert table.partitions[0].comment == "test" schema_editor.delete_partition(model, "mypartition") table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 0
def test_schema_editor_add_default_partition(method, key): model = define_fake_partitioned_model( { "name": models.TextField(), "timestamp": models.DateTimeField() }, { "method": method, "key": key }, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_default_partition(model, name="mypartition", comment="test") table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 1 assert table.partitions[0].name == "mypartition" assert ( table.partitions[0].full_name == f"{model._meta.db_table}_mypartition") assert table.partitions[0].comment == "test" schema_editor.delete_partition(model, "mypartition") table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 0
def test_schema_editor_add_range_partition(): """Tests whether adding a range partition works.""" model = define_fake_partitioned_model( { "name": models.TextField(), "timestamp": models.DateTimeField() }, {"key": ["timestamp"]}, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_range_partition( model, name="mypartition", from_values="2019-1-1", to_values="2019-2-1", comment="test", ) table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 1 assert table.partitions[0].name == "mypartition" assert ( table.partitions[0].full_name == f"{model._meta.db_table}_mypartition") assert table.partitions[0].comment == "test" schema_editor.delete_partition(model, "mypartition") table = db_introspection.get_partitioned_table(model._meta.db_table) assert len(table.partitions) == 0
def test_schema_editor_create_partitioned_model_no_key(): """Tests whether trying to create a partitioned model without a partitioning key raises :see:ImproperlyConfigured as its not possible to create a partitioned model without one and we cannot have a sane default.""" model = define_fake_partitioned_model( { "name": models.TextField(), "timestamp": models.DateTimeField() }, {"method": PostgresPartitioningMethod.RANGE}, ) schema_editor = PostgresSchemaEditor(connection) with pytest.raises(ImproperlyConfigured): schema_editor.create_partitioned_model(model)
def test_schema_editor_create_delete_partitioned_model_list(): """Tests whether creating a partitioned model and adding a range partition to it using the. :see:PostgresSchemaEditor works. """ method = PostgresPartitioningMethod.LIST key = ["category"] model = define_fake_partitioning_model( {"name": models.TextField(), "category": models.TextField()}, {"method": method, "key": key}, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_list_partition(model, "pt1", ["car", "boat"]) with connection.cursor() as cursor: introspection = connection.introspection table = introspection.get_partitioned_table( cursor, model._meta.db_table ) assert table.name == model._meta.db_table assert table.method == method assert table.key == key assert table.partitions[0].name == model._meta.db_table + "_pt1" schema_editor.delete_partitioned_model(model) with connection.cursor() as cursor: introspection = connection.introspection table = introspection.get_partitioned_table( cursor, model._meta.db_table ) assert not table partitions = introspection.get_partitions(cursor, model._meta.db_table) assert len(partitions) == 0
def test_schema_editor_create_partitioned_model_no_method(): """Tests whether its possible to create a partitioned model without explicitly setting a partitioning method. The default is "range" so setting one explicitely should not be needed. """ model = define_fake_partitioned_model( { "name": models.TextField(), "timestamp": models.DateTimeField() }, {"key": ["timestamp"]}, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) pt = db_introspection.get_partitioned_table(model._meta.db_table) assert pt.method == PostgresPartitioningMethod.RANGE assert len(pt.partitions) == 0
def test_schema_editor_create_delete_partitioned_model_default(): """Tests whether creating a partitioned model and adding a default partition to it using the :see:PostgresSchemaEditor works.""" method = PostgresPartitioningMethod.LIST key = ["category"] model = define_fake_partitioned_model( { "name": models.TextField(), "category": models.TextField() }, { "method": method, "key": key }, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_default_partition(model, "default") table = db_introspection.get_partitioned_table(model._meta.db_table) assert table.name == model._meta.db_table assert table.method == method assert table.key == key assert table.partitions[0].full_name == model._meta.db_table + "_default" schema_editor.delete_partitioned_model(model) table = db_introspection.get_partitioned_table(model._meta.db_table) assert not table partitions = db_introspection.get_partitions(model._meta.db_table) assert len(partitions) == 0
def test_schema_editor_create_delete_partitioned_model_range(): """Tests whether creating a partitioned model and adding a list partition to it using the :see:PostgresSchemaEditor works.""" method = PostgresPartitioningMethod.RANGE key = ["timestamp"] model = define_fake_partitioned_model( { "name": models.TextField(), "timestamp": models.DateTimeField() }, { "method": method, "key": key }, ) schema_editor = PostgresSchemaEditor(connection) schema_editor.create_partitioned_model(model) schema_editor.add_range_partition(model, "pt1", "2019-01-01", "2019-02-01") table = db_introspection.get_partitioned_table(model._meta.db_table) assert table.name == model._meta.db_table assert table.method == method assert table.key == key assert table.partitions[0].full_name == model._meta.db_table + "_pt1" schema_editor.delete_partitioned_model(model) table = db_introspection.get_partitioned_table(model._meta.db_table) assert not table partitions = db_introspection.get_partitions(model._meta.db_table) assert len(partitions) == 0