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.db.guardrails;
  
  import java.util.Optional;
  import javax.annotation.Nonnull;
  
  import org.junit.Test;
  
  import org.apache.cassandra.db.guardrails.ValueValidator.ValidationViolation;
  import org.apache.cassandra.exceptions.ConfigurationException;
  
  import static java.lang.Boolean.FALSE;
  import static java.lang.String.format;
  import static org.apache.cassandra.db.guardrails.ValueValidator.CLASS_NAME_KEY;
  import static org.assertj.core.api.Assertions.assertThatThrownBy;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  public class ValueValidatorTest
  {
      @Test
      public void testValidator()
      {
          CustomGuardrailConfig config = new CustomGuardrailConfig();
          config.put("expecting_true", FALSE);
  
          ValueValidator<Boolean> booleanValidator = new BooleanValidator(config);
  
          Optional<ValidationViolation> violationResult = booleanValidator.shouldWarn(true, true);
          assertTrue(violationResult.isPresent());
          assertEquals("Expecting true is false", violationResult.get().message);
  
          violationResult = booleanValidator.shouldWarn(false, true);
          assertTrue(violationResult.isEmpty());
  
          violationResult = booleanValidator.shouldWarn(true, true);
          assertTrue(violationResult.isPresent());
          assertEquals("Expecting true is false", violationResult.get().message);
      }
  
      @Test
      public void testValidatorCreation()
      {
          CustomGuardrailConfig config = new CustomGuardrailConfig();
          config.put(CLASS_NAME_KEY, BooleanValidator.class.getName());
          config.put("expecting_true", FALSE);
  
          ValueValidator<Boolean> booleanValidator = ValueValidator.getValidator("boolean validator", config);
          assertNotNull(booleanValidator);
  
          Optional<ValidationViolation> violationResult = booleanValidator.shouldWarn(true, true);
          assertTrue(violationResult.isPresent());
          assertEquals("Expecting true is false", violationResult.get().message);
      }
  
      @Test
      public void testValidatorCreationWithInvalidConfiguration()
      {
          CustomGuardrailConfig config = new CustomGuardrailConfig();
          config.put(CLASS_NAME_KEY, BooleanValidator.class.getName());
  
          assertThatThrownBy(() -> ValueValidator.getValidator("boolean validator", config))
          .isInstanceOf(ConfigurationException.class)
          .message().isEqualTo(format("Unable to create instance of validator of class %s: does not contain property 'expecting_true'", BooleanValidator.class.getName()));
      }
  
      public static class BooleanValidator extends ValueValidator<Boolean>
      {
          private final boolean expectingTrue;
  
          public BooleanValidator(CustomGuardrailConfig config)
          {
              super(config);
              validateParameters();
              expectingTrue = (Boolean) config.get("expecting_true");
          }
  
          @Override
          public Optional<ValidationViolation> shouldWarn(Boolean aBoolean, boolean calledBySuperuser)
          {
              return aBoolean == expectingTrue ? Optional.empty() : Optional.of(new ValidationViolation("Expecting true is " + expectingTrue));
          }
  
          @Override
          public Optional<ValidationViolation> shouldFail(Boolean aBoolean, boolean calledBySuperUser)
          {
              return aBoolean == expectingTrue ? Optional.empty() : Optional.of(new ValidationViolation("Expecting true is " + expectingTrue));
          }
  
          @Override
          public void validateParameters() throws ConfigurationException
          {
              if (!config.containsKey("expecting_true"))
                  throw new ConfigurationException("does not contain property 'expecting_true'");
          }
  
          @Nonnull
          @Override
          public CustomGuardrailConfig getParameters()
          {
              return config;
          }
      }
  }
  