com.avanza.ymer.MongoProbes.java Source code

Introduction

Here is the source code for com.avanza.ymer.MongoProbes.java

Source

/*
 * Copyright 2015 Avanza Bank AB
 *
 * Licensed 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 com.avanza.ymer;

import java.util.ArrayList;
import java.util.List;

import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.springframework.data.mongodb.core.MongoOperations;

import com.avanza.ymer.test.util.Probe;

/**
 * Probes to assist with asynchronous testing with Mongo.
 * 
 * @author Kristoffer Erlandsson (krierl), kristoffer.erlandsson@avanzabank.se
 */
public class MongoProbes {

    /**
     * This probe checks all objects of the specified class in the mongo instance. If any of them matches the matcher,
     * the probe is satisfied.
     */
    public static <T> Probe containsObject(final MongoOperations mongo, final Matcher<T> matcher,
            final Class<T> objectClass) {
        return new Probe() {

            private List<T> sampledObjects = new ArrayList<T>();

            @Override
            public void sample() {
                sampledObjects = mongo.findAll(objectClass);
            }

            @Override
            public boolean isSatisfied() {
                for (T object : sampledObjects) {
                    if (matcher.matches(object)) {
                        return true;
                    }
                }
                return false;
            }

            @Override
            public void describeFailureTo(Description description) {
                StringBuilder sb = new StringBuilder();
                for (T details : sampledObjects) {
                    sb.append(details);
                    sb.append(" ");
                }
                description.appendText("failed to find object in mongo that ").appendDescriptionOf(matcher)
                        .appendText(" - most recent sampled objects: ").appendText(sb.toString().trim());
            }
        };

    }

}