Revert "TST: Refactoring backend tests (#2566)" (#2574)

This reverts commit 1498414.

ibis/backends/bigquery/tests/conftest.py

@@ -1,15 +1,8 @@
 import os
-from pathlib import Path
 
 import pytest
 
 import ibis
-import ibis.expr.types as ir
-from ibis.backends.tests.base import (
-    BackendTest,
-    RoundAwayFromZero,
-    UnorderedComparator,
-)
 
 PROJECT_ID = os.environ.get('GOOGLE_BIGQUERY_PROJECT_ID', 'ibis-gbq')
 DATASET_ID = 'testing'
@@ -56,34 +49,6 @@ def connect(project_id, dataset_id, application_name=None):
         pytest.skip(skip_message)
 
 
-class BigQueryTest(UnorderedComparator, BackendTest, RoundAwayFromZero):
-    supports_divide_by_zero = True
-    supports_floating_modulus = False
-    returned_timestamp_unit = 'us'
-
-    @staticmethod
-    def connect(data_directory: Path) -> ibis.client.Client:
-        project_id = os.environ.get('GOOGLE_BIGQUERY_PROJECT_ID')
-        if project_id is None:
-            pytest.skip(
-                'Environment variable GOOGLE_BIGQUERY_PROJECT_ID '
-                'not defined'
-            )
-        elif not project_id:
-            pytest.skip(
-                'Environment variable GOOGLE_BIGQUERY_PROJECT_ID is empty'
-            )
-        return connect(project_id, dataset_id='testing')
-
-    @property
-    def batting(self) -> ir.TableExpr:
-        return None
-
-    @property
-    def awards_players(self) -> ir.TableExpr:
-        return None
-
-
 @pytest.fixture(scope='session')
 def project_id():
     return PROJECT_ID

ibis/backends/clickhouse/tests/conftest.py

@@ -1,16 +1,8 @@
 import os
-from pathlib import Path
-from typing import Callable
 
 import pytest
 
 import ibis
-import ibis.expr.types as ir
-from ibis.backends.tests.base import (
-    BackendTest,
-    RoundHalfToEven,
-    UnorderedComparator,
-)
 
 CLICKHOUSE_HOST = os.environ.get('IBIS_TEST_CLICKHOUSE_HOST', 'localhost')
 CLICKHOUSE_PORT = int(os.environ.get('IBIS_TEST_CLICKHOUSE_PORT', 9000))
@@ -19,56 +11,6 @@
 IBIS_TEST_CLICKHOUSE_DB = os.environ.get('IBIS_TEST_DATA_DB', 'ibis_testing')
 
 
-class ClickhouseTest(UnorderedComparator, BackendTest, RoundHalfToEven):
-    check_dtype = False
-    supports_window_operations = False
-    returned_timestamp_unit = 's'
-    supported_to_timestamp_units = {'s'}
-    supports_floating_modulus = False
-
-    @staticmethod
-    def connect(data_directory: Path) -> ibis.client.Client:
-        host = os.environ.get('IBIS_TEST_CLICKHOUSE_HOST', 'localhost')
-        port = int(os.environ.get('IBIS_TEST_CLICKHOUSE_PORT', 9000))
-        user = os.environ.get('IBIS_TEST_CLICKHOUSE_USER', 'default')
-        password = os.environ.get('IBIS_TEST_CLICKHOUSE_PASSWORD', '')
-        database = os.environ.get(
-            'IBIS_TEST_CLICKHOUSE_DATABASE', 'ibis_testing'
-        )
-        return ibis.clickhouse.connect(
-            host=host,
-            port=port,
-            password=password,
-            database=database,
-            user=user,
-        )
-
-    @property
-    def functional_alltypes(self) -> ir.TableExpr:
-        t = super().functional_alltypes
-        return t.mutate(bool_col=t.bool_col == 1)
-
-    @staticmethod
-    def greatest(
-        f: Callable[..., ir.ValueExpr], *args: ir.ValueExpr
-    ) -> ir.ValueExpr:
-        if len(args) > 2:
-            raise NotImplementedError(
-                'Clickhouse does not support more than 2 arguments to greatest'
-            )
-        return f(*args)
-
-    @staticmethod
-    def least(
-        f: Callable[..., ir.ValueExpr], *args: ir.ValueExpr
-    ) -> ir.ValueExpr:
-        if len(args) > 2:
-            raise NotImplementedError(
-                'Clickhouse does not support more than 2 arguments to least'
-            )
-        return f(*args)
-
-
 @pytest.fixture(scope='module')
 def con():
     return ibis.clickhouse.connect(

ibis/backends/csv/tests/conftest.py

@@ -1,65 +1,7 @@
-from pathlib import Path
-
 import pandas as pd
 import pytest
 
-import ibis
-import ibis.expr.datatypes as dt
-import ibis.expr.types as ir
 from ibis.backends.csv import CSVClient
-from ibis.backends.pandas.tests.conftest import PandasTest
-
-
-class CsvTest(PandasTest):
-    check_names = False
-    supports_divide_by_zero = True
-    returned_timestamp_unit = 'ns'
-
-    @staticmethod
-    def connect(data_directory: Path) -> ibis.client.Client:
-        filename = data_directory / 'functional_alltypes.csv'
-        if not filename.exists():
-            pytest.skip('test data set {} not found'.format(filename))
-        return ibis.csv.connect(data_directory)
-
-    @property
-    def functional_alltypes(self) -> ir.TableExpr:
-        schema = ibis.schema(
-            [
-                ('bool_col', dt.boolean),
-                ('string_col', dt.string),
-                ('timestamp_col', dt.timestamp),
-            ]
-        )
-        return self.connection.table('functional_alltypes', schema=schema)
-
-    @property
-    def batting(self) -> ir.TableExpr:
-        schema = ibis.schema(
-            [
-                ('lgID', dt.string),
-                ('G', dt.float64),
-                ('AB', dt.float64),
-                ('R', dt.float64),
-                ('H', dt.float64),
-                ('X2B', dt.float64),
-                ('X3B', dt.float64),
-                ('HR', dt.float64),
-                ('RBI', dt.float64),
-                ('SB', dt.float64),
-                ('CS', dt.float64),
-                ('BB', dt.float64),
-                ('SO', dt.float64),
-            ]
-        )
-        return self.connection.table('batting', schema=schema)
-
-    @property
-    def awards_players(self) -> ir.TableExpr:
-        schema = ibis.schema(
-            [('lgID', dt.string), ('tie', dt.string), ('notes', dt.string)]
-        )
-        return self.connection.table('awards_players', schema=schema)
 
 
 @pytest.fixture

ibis/backends/dask/tests/conftest.py

@@ -2,16 +2,9 @@
 import pandas as pd
 import pytest
 
-from ibis.backends.pandas.tests.conftest import PandasTest
-
 from .. import connect
 
 
-class DaskTest(PandasTest):
-    # clone pandas directly until the rest of the dask backend is defined
-    pass
-
-
 @pytest.fixture
 def dataframe():
     return dd.from_pandas(

ibis/backends/hdf5/tests/conftest.py

@@ -1,23 +1,6 @@
-from pathlib import Path
-
 import pytest
 
-import ibis
 from ibis.backends.hdf5 import HDFClient
-from ibis.backends.pandas.tests.conftest import PandasTest
-
-
-class HDF5Test(PandasTest):
-    check_names = False
-    supports_divide_by_zero = True
-    returned_timestamp_unit = 'ns'
-
-    @staticmethod
-    def connect(data_directory: Path) -> ibis.client.Client:
-        filename = data_directory / 'functional_alltypes.h5'
-        if not filename.exists():
-            pytest.skip('test data set {} not found'.format(filename))
-        return ibis.hdf5.connect(data_directory)
 
 
 @pytest.fixture

ibis/backends/impala/tests/conftest.py

@@ -1,61 +1,15 @@
 import inspect
 import os
 import warnings
-from pathlib import Path
 
 import pytest
 
 import ibis
-import ibis.expr.types as ir
 import ibis.util as util
 from ibis import options
-from ibis.backends.tests.base import (
-    BackendTest,
-    RoundAwayFromZero,
-    UnorderedComparator,
-)
 from ibis.tests.expr.mocks import MockConnection
 
 
-class ImpalaTest(UnorderedComparator, BackendTest, RoundAwayFromZero):
-    supports_arrays = True
-    supports_arrays_outside_of_select = False
-    check_dtype = False
-    supports_divide_by_zero = True
-    returned_timestamp_unit = 's'
-
-    @staticmethod
-    def connect(data_directory: Path) -> ibis.client.Client:
-        from ibis.backends.impala.tests.conftest import IbisTestEnv
-
-        env = IbisTestEnv()
-        hdfs_client = ibis.impala.hdfs_connect(
-            host=env.nn_host,
-            port=env.webhdfs_port,
-            auth_mechanism=env.auth_mechanism,
-            verify=env.auth_mechanism not in ['GSSAPI', 'LDAP'],
-            user=env.webhdfs_user,
-        )
-        auth_mechanism = env.auth_mechanism
-        if auth_mechanism == 'GSSAPI' or auth_mechanism == 'LDAP':
-            print("Warning: ignoring invalid Certificate Authority errors")
-        return ibis.impala.connect(
-            host=env.impala_host,
-            port=env.impala_port,
-            auth_mechanism=env.auth_mechanism,
-            hdfs_client=hdfs_client,
-            database='ibis_testing',
-        )
-
-    @property
-    def batting(self) -> ir.TableExpr:
-        return None
-
-    @property
-    def awards_players(self) -> ir.TableExpr:
-        return None
-
-
 def isproperty(obj):
     return isinstance(obj, property)