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.arrow.memory;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.condition.JRE.JAVA_16;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.condition.EnabledForJreRange;
  
  public class TestOpens {
    /** Instantiating the RootAllocator should poke MemoryUtil and fail. */
    @Test
    @EnabledForJreRange(min = JAVA_16)
    public void testMemoryUtilFailsLoudly() {
      // This test is configured by Maven to run WITHOUT add-opens. So this should fail on JDK16+
      // (where JEP396 means that add-opens is required to access JDK internals).
      // The test will likely fail in your IDE if it doesn't correctly pick this up.
      Throwable e =
          assertThrows(
              Throwable.class,
              () -> {
                BufferAllocator allocator = new RootAllocator();
                allocator.close();
              });
      boolean found = false;
      while (e != null) {
        e = e.getCause();
        if (e instanceof RuntimeException
            && e.getMessage().contains("Failed to initialize MemoryUtil")) {
          found = true;
          break;
        }
      }
      assertTrue(found, "Expected exception was not thrown");
    }
  }
  