content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.cassandra.testing;
  
  import java.util.Arrays;
  import java.util.stream.Stream;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Generates the list of versions we're going to test against.
   * We will run the same module (trunk for example) against multiple versions of Cassandra.
   * This is due to releases that don't add new features that would affect the sidecar,
   * but we still want to test those versions specifically to avoid the chance of regressions.
   *
   * <p>Ideally, we'd probably have concurrent runs of the test infrastructure each running tests against one specific
   * version of C*, but this will require some additional work in the dtest framework so for now we run one at a time.
   */
  public final class TestVersionSupplier
  {
      private static final Logger LOGGER = LoggerFactory.getLogger(TestVersionSupplier.class);
  
      private TestVersionSupplier()
      {
          throw new IllegalStateException(getClass() + " is static utility class and shall not be instantiated");
      }
  
      public static Stream<TestVersion> testVersions()
      {
          // By default, we test 2 versions that will exercise oldest and newest supported versions
          String versions = System.getProperty("cassandra.sidecar.versions_to_test", "4.1,5.1");
          LOGGER.info("Testing with versions={}", versions);
          return Arrays.stream(versions.split(",")).map(String::trim).map(TestVersion::new);
      }
  }
  