TestUtil.java

/**
 * Licensed to DigitalPebble Ltd under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * DigitalPebble 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 com.digitalpebble.stormcrawler;

import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.nio.charset.Charset;
import java.util.Map;

import org.apache.storm.metric.api.IMetric;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.tuple.Tuple;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

import com.digitalpebble.stormcrawler.Metadata;

public class TestUtil {

    private TestUtil() {
    }

    public static TopologyContext getMockedTopologyContext() {
        TopologyContext context = mock(TopologyContext.class);
        when(context.registerMetric(anyString(), any(IMetric.class), anyInt()))
                .thenAnswer(new Answer<IMetric>() {

                    @Override
                    public IMetric answer(InvocationOnMock invocation)
                            throws Throwable {
                        return invocation.getArgumentAt(1, IMetric.class);
                    }
                });
        return context;
    }

    public static Tuple getMockedTestTuple(String url, String content,
            Metadata metadata) {
        Tuple tuple = mock(Tuple.class);
        when(tuple.getStringByField("url")).thenReturn(url);
        when(tuple.getBinaryByField("content")).thenReturn(
                content.getBytes(Charset.defaultCharset()));
        if (metadata == null) {
            when(tuple.contains("metadata")).thenReturn(Boolean.FALSE);
        } else {
            when(tuple.contains("metadata")).thenReturn(Boolean.TRUE);
            when(tuple.getValueByField("metadata")).thenReturn(metadata);
        }
        return tuple;
    }

    /**
     * A more generic test tuple
     */
    public static Tuple getMockedTestTuple(final Map<String, Object> tupleValues) {
        Tuple tuple = mock(Tuple.class);
        when(tuple.contains(anyString())).thenAnswer(new Answer<Boolean>() {
            @Override
            public Boolean answer(InvocationOnMock invocation) throws Throwable {
                return tupleValues.containsKey(invocation.getArgumentAt(0,
                        String.class));
            }
        });
        when(tuple.getValueByField(anyString())).thenAnswer(new Answer() {
            @Override
            public Object answer(InvocationOnMock invocation) throws Throwable {
                return tupleValues.get(invocation
                        .getArgumentAt(0, String.class));
            }
        });
        when(tuple.getStringByField(anyString())).thenAnswer(
                new Answer<String>() {
                    @Override
                    public String answer(InvocationOnMock invocation)
                            throws Throwable {
                        return (String) tupleValues.get(invocation
                                .getArgumentAt(0, String.class));
                    }
                });
        return tuple;
    }

}