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This patch adds a fixture "scylla_only" which can be used to mark tests for Scylla-specific features. These tests are skipped when running against other CQL servers - like Apache Cassandra. We recognize Scylla by looking at whether any system table exists with the name "scylla" in its name - Scylla has several of those, and Cassandra has none. Signed-off-by: Nadav Har'El <nyh@scylladb.com>
85 lines
3.9 KiB
Python
85 lines
3.9 KiB
Python
# Copyright 2020 ScyllaDB
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#
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# This file is part of Scylla.
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#
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# Scylla is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Scylla is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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# This file configures pytest for all tests in this directory, and also
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# defines common test fixtures for all of them to use. A "fixture" is some
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# setup which an invididual test requires to run; The fixture has setup code
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# and teardown code, and if multiple tests require the same fixture, it can
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# be set up only once - while still allowing the user to run individual tests
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# and automatically setting up the fixtures they need.
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import pytest
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from cassandra.cluster import Cluster, ConsistencyLevel, ExecutionProfile, EXEC_PROFILE_DEFAULT
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from cassandra.policies import RoundRobinPolicy
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from util import unique_name, new_test_table
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# By default, tests run against a CQL server (Scylla or Cassandra) listening
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# on localhost:9042. Add the --host and --port options to allow overiding
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# these defaults.
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def pytest_addoption(parser):
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parser.addoption('--host', action='store', default='localhost',
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help='CQL server host to connect to')
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parser.addoption('--port', action='store', default='9042',
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help='CQL server port to connect to')
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# "cql" fixture: set up client object for communicating with the CQL API.
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# The host/port combination of the server are determined by the --host and
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# --port options, and defaults to localhost and 9042, respectively.
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# We use scope="session" so that all tests will reuse the same client object.
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@pytest.fixture(scope="session")
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def cql(request):
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profile = ExecutionProfile(
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load_balancing_policy=RoundRobinPolicy(),
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consistency_level=ConsistencyLevel.LOCAL_QUORUM,
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serial_consistency_level=ConsistencyLevel.LOCAL_SERIAL)
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cluster = Cluster(execution_profiles={EXEC_PROFILE_DEFAULT: profile},
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contact_points=[request.config.getoption('host')],
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port=request.config.getoption('port'),
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# TODO: make the protocol version an option, to allow testing with
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# different versions. If we drop this setting completely, it will
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# mean pick the latest version supported by the client and the server.
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protocol_version=4
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)
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return cluster.connect()
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# "test_keyspace" fixture: Creates and returns a temporary keyspace to be
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# used in tests that need a keyspace. The keyspace is created with RF=1,
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# and automatically deleted at the end. We use scope="session" so that all
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# tests will reuse the same keyspace.
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@pytest.fixture(scope="session")
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def test_keyspace(cql):
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name = unique_name()
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cql.execute("CREATE KEYSPACE " + name + " WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 }")
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yield name
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cql.execute("DROP KEYSPACE " + name)
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# The "scylla_only" fixture can be used by tests for Scylla-only features,
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# which do not exist on Apache Cassandra. A test using this fixture will be
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# skipped if running with "run-cassandra".
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@pytest.fixture(scope="session")
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def scylla_only(cql):
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# We recognize Scylla by checking if there is any system table whose name
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# contains the word "scylla":
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names = [row.table_name for row in cql.execute("SELECT * FROM system_schema.tables WHERE keyspace_name = 'system'")]
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if not any('scylla' in name for name in names):
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pytest.skip('Scylla-only test skipped')
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# TODO: use new_test_table and "yield from" to make shared test_table
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# fixtures with some common schemas.
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