org.apache.streams.datasift.serializer.DatasiftActivitySerializerTest.java Source code

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Here is the source code for org.apache.streams.datasift.serializer.DatasiftActivitySerializerTest.java

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/*
 * 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
 *
 *   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.streams.datasift.serializer;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.Lists;
import org.apache.commons.lang.StringUtils;
import org.apache.streams.data.ActivitySerializer;
import org.apache.streams.datasift.Datasift;
import org.apache.streams.datasift.util.StreamsDatasiftMapper;
import org.apache.streams.jackson.StreamsJacksonMapper;
import org.apache.streams.pojo.json.Activity;
import org.apache.streams.pojo.json.Actor;
import org.apache.streams.util.files.StreamsScannerUtil;
import org.junit.Before;
import org.junit.Test;

import java.util.Scanner;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

public class DatasiftActivitySerializerTest {

    protected ActivitySerializer SERIALIZER;

    protected static ObjectMapper MAPPER = StreamsJacksonMapper
            .getInstance(Lists.newArrayList(StreamsDatasiftMapper.DATASIFT_FORMAT));

    @Before
    public void initSerializer() {
        SERIALIZER = new DatasiftActivitySerializer();
    }

    @Test
    public void testConversion() throws Exception {

        Scanner scanner = StreamsScannerUtil.getInstance("/rand_sample_datasift_json.txt");

        String line = null;
        while (scanner.hasNextLine()) {
            try {
                line = scanner.nextLine();
                Datasift item = MAPPER.readValue(line, Datasift.class);
                testConversion(item);
                String json = MAPPER.writeValueAsString(item);
                testDeserNoNull(json);
                testDeserNoAddProps(json);
            } catch (Exception e) {
                System.err.println(line);
                throw e;
            }
        }
    }

    /**
     * Test that the minimum number of things that an activity has
     * @param item
     */
    protected void testConversion(Datasift item) throws Exception {
        Activity activity = SERIALIZER.deserialize(item);
        assertNotNull("activity.id", activity.getId());
        assertNotNull("activity.published", activity.getPublished());
        assertNotNull("activity.provider", activity.getProvider());
        assertNotNull("activity.urls", activity.getUrl());
        assertNotNull("activity.verb", activity.getVerb());
        Actor actor = activity.getActor();
        assertNotNull("activity.actor", actor);
    }

    /**
     * Test that null fields are not present
     * @param json
     */
    protected void testDeserNoNull(String json) throws Exception {
        int nulls = StringUtils.countMatches(json, ":null");
        assertEquals(0l, (long) nulls);

    }

    /**
     * Test that null fields are not present
     * @param json
     */
    protected void testDeserNoAddProps(String json) throws Exception {
        int nulls = StringUtils.countMatches(json, "additionalProperties:{");
        assertEquals(0l, (long) nulls);

    }

}