branch-1.2/ambari-server/src/test/java/org/apache/ambari/server/controller/internal/PropertyPredicateVisitorTest.java

/**
 * 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.ambari.server.controller.internal;

import junit.framework.Assert;
import org.apache.ambari.server.controller.predicate.AndPredicate;
import org.apache.ambari.server.controller.predicate.BasePredicate;
import org.apache.ambari.server.controller.predicate.CategoryIsEmptyPredicate;
import org.apache.ambari.server.controller.predicate.OrPredicate;
import org.apache.ambari.server.controller.utilities.PredicateBuilder;
import org.apache.ambari.server.controller.utilities.PropertyHelper;
import org.junit.Test;

import java.util.Map;

/**
 * Tests for the property predicate visitor.
 */
public class PropertyPredicateVisitorTest {

  private static final String PROPERTY_A = PropertyHelper.getPropertyId("category", "A");
  private static final String PROPERTY_B = PropertyHelper.getPropertyId("category", "B");

  private static final BasePredicate PREDICATE_1 = new PredicateBuilder().property(PROPERTY_A).equals("Monkey").toPredicate();
  private static final BasePredicate PREDICATE_2 = new PredicateBuilder().property(PROPERTY_B).equals("Runner").toPredicate();
  private static final BasePredicate PREDICATE_3 = new AndPredicate(PREDICATE_1, PREDICATE_2);
  private static final BasePredicate PREDICATE_4 = new OrPredicate(PREDICATE_1, PREDICATE_2);
  private static final BasePredicate PREDICATE_5 = new CategoryIsEmptyPredicate("cat1");

  @Test
  public void testVisit() {
    PropertyPredicateVisitor visitor = new PropertyPredicateVisitor();
    PREDICATE_1.accept(visitor);
    Map<String, Object> properties = visitor.getProperties();
    Assert.assertEquals(1, properties.size());
    Assert.assertEquals("Monkey", properties.get(PROPERTY_A));

    visitor = new PropertyPredicateVisitor();
    PREDICATE_3.accept(visitor);
    properties = visitor.getProperties();
    Assert.assertEquals(2, properties.size());
    Assert.assertEquals("Monkey", properties.get(PROPERTY_A));
    Assert.assertEquals("Runner", properties.get(PROPERTY_B));

    visitor = new PropertyPredicateVisitor();
    PREDICATE_4.accept(visitor);
    properties = visitor.getProperties();
    Assert.assertEquals(2, properties.size());
    Assert.assertEquals("Monkey", properties.get(PROPERTY_A));
    Assert.assertEquals("Runner", properties.get(PROPERTY_B));

    visitor = new PropertyPredicateVisitor();
    PREDICATE_5.accept(visitor);
    properties = visitor.getProperties();
    Assert.assertTrue(properties.isEmpty());
  }
}