| /** |
| * 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.predicate; |
| |
| import junit.framework.Assert; |
| import org.apache.ambari.server.controller.utilities.PropertyHelper; |
| import org.junit.Test; |
| |
| /** |
| * |
| */ |
| public class PredicateVisitorTest { |
| |
| @Test |
| public void testVisitor() { |
| |
| String propertyId = PropertyHelper.getPropertyId("category1", "foo"); |
| EqualsPredicate equalsPredicate = new EqualsPredicate<String>(propertyId, "bar"); |
| |
| TestPredicateVisitor visitor = new TestPredicateVisitor(); |
| equalsPredicate.accept(visitor); |
| |
| Assert.assertSame(equalsPredicate, visitor.visitedComparisonPredicate); |
| Assert.assertNull(visitor.visitedArrayPredicate); |
| Assert.assertNull(visitor.visitedUnaryPredicate); |
| |
| AndPredicate andPredicate = new AndPredicate(equalsPredicate); |
| |
| visitor = new TestPredicateVisitor(); |
| andPredicate.accept(visitor); |
| |
| Assert.assertNull(visitor.visitedComparisonPredicate); |
| Assert.assertSame(andPredicate, visitor.visitedArrayPredicate); |
| Assert.assertNull(visitor.visitedUnaryPredicate); |
| |
| NotPredicate notPredicate = new NotPredicate(andPredicate); |
| |
| visitor = new TestPredicateVisitor(); |
| notPredicate.accept(visitor); |
| |
| Assert.assertNull(visitor.visitedComparisonPredicate); |
| Assert.assertNull(visitor.visitedArrayPredicate); |
| Assert.assertSame(notPredicate, visitor.visitedUnaryPredicate); |
| } |
| |
| public static class TestPredicateVisitor implements PredicateVisitor { |
| |
| ComparisonPredicate visitedComparisonPredicate = null; |
| ArrayPredicate visitedArrayPredicate = null; |
| UnaryPredicate visitedUnaryPredicate = null; |
| AlwaysPredicate visitedAlwaysPredicate = null; |
| |
| @Override |
| public void acceptComparisonPredicate(ComparisonPredicate predicate) { |
| visitedComparisonPredicate = predicate; |
| } |
| |
| @Override |
| public void acceptArrayPredicate(ArrayPredicate predicate) { |
| visitedArrayPredicate = predicate; |
| } |
| |
| @Override |
| public void acceptUnaryPredicate(UnaryPredicate predicate) { |
| visitedUnaryPredicate = predicate; |
| } |
| |
| @Override |
| public void acceptAlwaysPredicate(AlwaysPredicate predicate) { |
| visitedAlwaysPredicate = predicate; |
| } |
| } |
| |
| } |