How to use Mock class of org.easymock package

1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17package org.apache.catalina.valves;
18
19import java.io.IOException;
20import java.util.Arrays;
21import java.util.Collections;
22
23import javax.servlet.ServletException;
24import javax.servlet.http.HttpSession;
25import javax.servlet.http.HttpSessionBindingListener;
26
27import org.hamcrest.CoreMatchers;
28import org.hamcrest.MatcherAssert;
29
30import org.junit.Assert;
31import org.junit.Test;
32
33import org.apache.catalina.Context;
34import org.apache.catalina.Host;
35import org.apache.catalina.Manager;
36import org.apache.catalina.Valve;
37import org.apache.catalina.connector.Request;
38import org.apache.catalina.connector.Response;
39import org.apache.catalina.core.StandardContext;
40import org.apache.catalina.session.StandardManager;
41import org.apache.catalina.session.StandardSession;
42import org.easymock.EasyMock;
43import org.easymock.IExpectationSetters;
44
45public class TestCrawlerSessionManagerValve {
46
47    private static final Manager TEST_MANAGER;
48
49    static {
50        TEST_MANAGER = new StandardManager();
51        TEST_MANAGER.setContext(new StandardContext());
52    }
53
54
55
56    @Test
57    public void testCrawlerIpsPositive() throws Exception {
58        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
59        valve.setCrawlerIps("216\\.58\\.206\\.174");
60        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
61        valve.setNext(EasyMock.createMock(Valve.class));
62        HttpSession session = createSessionExpectations(valve, true);
63        Request request = createRequestExpectations("216.58.206.174", session, true);
64
65        EasyMock.replay(request, session);
66
67        valve.invoke(request, EasyMock.createMock(Response.class));
68
69        EasyMock.verify(request, session);
70    }
71
72    @Test
73    public void testCrawlerIpsNegative() throws Exception {
74        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
75        valve.setCrawlerIps("216\\.58\\.206\\.174");
76        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
77        valve.setNext(EasyMock.createMock(Valve.class));
78        HttpSession session = createSessionExpectations(valve, false);
79        Request request = createRequestExpectations("127.0.0.1", session, false);
80
81        EasyMock.replay(request, session);
82
83        valve.invoke(request, EasyMock.createMock(Response.class));
84
85        EasyMock.verify(request, session);
86    }
87
88    @Test
89    public void testCrawlerMultipleHostsHostAware() throws Exception {
90        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
91        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
92        valve.setHostAware(true);
93        valve.setContextAware(true);
94        valve.setNext(EasyMock.createMock(Valve.class));
95
96        verifyCrawlingLocalhost(valve, "localhost");
97        verifyCrawlingLocalhost(valve, "example.invalid");
98    }
99
100    @Test
101    public void testCrawlerMultipleContextsContextAware() throws Exception {
102        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
103        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
104        valve.setHostAware(true);
105        valve.setContextAware(true);
106        valve.setNext(EasyMock.createMock(Valve.class));
107
108        verifyCrawlingContext(valve, "/examples");
109        verifyCrawlingContext(valve, null);
110    }
111
112    @Test
113    public void testCrawlersSessionIdIsRemovedAfterSessionExpiry() throws IOException, ServletException {
114        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
115        valve.setCrawlerIps("216\\.58\\.206\\.174");
116        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
117        valve.setNext(EasyMock.createMock(Valve.class));
118        valve.setSessionInactiveInterval(0);
119        StandardSession session = new StandardSession(TEST_MANAGER);
120        session.setId("id");
121        session.setValid(true);
122
123        Request request = createRequestExpectations("216.58.206.174", session, true);
124
125        EasyMock.replay(request);
126
127        valve.invoke(request, EasyMock.createMock(Response.class));
128
129        EasyMock.verify(request);
130
131        MatcherAssert.assertThat(valve.getClientIpSessionId().values(), CoreMatchers.hasItem("id"));
132
133        session.expire();
134
135        Assert.assertEquals(0, valve.getClientIpSessionId().values().size());
136    }
137
138
139    private void verifyCrawlingLocalhost(CrawlerSessionManagerValve valve, String hostname)
140            throws IOException, ServletException {
141        HttpSession session = createSessionExpectations(valve, true);
142        Request request = createRequestExpectations("127.0.0.1", session, true, hostname, "/examples", "tomcatBot 1.0");
143
144        EasyMock.replay(request, session);
145
146        valve.invoke(request, EasyMock.createMock(Response.class));
147
148        EasyMock.verify(request, session);
149    }
150
151
152    private void verifyCrawlingContext(CrawlerSessionManagerValve valve, String contextPath)
153            throws IOException, ServletException {
154        HttpSession session = createSessionExpectations(valve, true);
155        Request request = createRequestExpectations("127.0.0.1", session, true, "localhost", contextPath, "tomcatBot 1.0");
156
157        EasyMock.replay(request, session);
158
159        valve.invoke(request, EasyMock.createMock(Response.class));
160
161        EasyMock.verify(request, session);
162    }
163
164
165    private HttpSession createSessionExpectations(CrawlerSessionManagerValve valve, boolean isBot) {
166        HttpSession session = EasyMock.createMock(HttpSession.class);
167        if (isBot) {
168            EasyMock.expect(session.getId()).andReturn("id").times(2);
169            session.setAttribute(EasyMock.eq(valve.getClass().getName()), EasyMock.anyObject(HttpSessionBindingListener.class));
170            EasyMock.expectLastCall();
171            session.setMaxInactiveInterval(60);
172            EasyMock.expectLastCall();
173        }
174        return session;
175    }
176
177
178    private Request createRequestExpectations(String ip, HttpSession session, boolean isBot) {
179        return createRequestExpectations(ip, session, isBot, "localhost", "/examples", "something 1.0");
180    }
181
182    private Request createRequestExpectations(String ip, HttpSession session, boolean isBot, String hostname,
183            String contextPath, String userAgent) {
184        Request request = EasyMock.createMock(Request.class);
185        EasyMock.expect(request.getRemoteAddr()).andReturn(ip);
186        EasyMock.expect(request.getHost()).andReturn(simpleHostWithName(hostname));
187        EasyMock.expect(request.getContext()).andReturn(simpleContextWithName(contextPath));
188        IExpectationSetters<HttpSession> setter = EasyMock.expect(request.getSession(false))
189                .andReturn(null);
190        if (isBot) {
191            setter.andReturn(session);
192        }
193        EasyMock.expect(request.getHeaders("user-agent")).andAnswer(() -> Collections.enumeration(Arrays.asList(userAgent)));
194        return request;
195    }
196
197    private Host simpleHostWithName(String hostname) {
198        Host host = EasyMock.createMock(Host.class);
199        EasyMock.expect(host.getName()).andReturn(hostname);
200        EasyMock.replay(host);
201        return host;
202    }
203
204    private Context simpleContextWithName(String contextPath) {
205        if (contextPath == null) {
206            return null;
207        }
208        Context context = EasyMock.createMock(Context.class);
209        EasyMock.expect(context.getName()).andReturn(contextPath);
210        EasyMock.replay(context);
211        return context;
212    }
213}
214

Source: TestCrawlerSessionManagerValve.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.catalina.valves;

import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;

import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionBindingListener;

import org.hamcrest.CoreMatchers;
import org.hamcrest.MatcherAssert;

import org.junit.Assert;
import org.junit.Test;

import org.apache.catalina.Context;
import org.apache.catalina.Host;
import org.apache.catalina.Manager;
import org.apache.catalina.Valve;
import org.apache.catalina.connector.Request;
import org.apache.catalina.connector.Response;
import org.apache.catalina.core.StandardContext;
import org.apache.catalina.session.StandardManager;
import org.apache.catalina.session.StandardSession;
import org.easymock.EasyMock;
import org.easymock.IExpectationSetters;

public class TestCrawlerSessionManagerValve {

    private static final Manager TEST_MANAGER;

    static {
        TEST_MANAGER = new StandardManager();
        TEST_MANAGER.setContext(new StandardContext());
    }



    @Test
    public void testCrawlerIpsPositive() throws Exception {
        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
        valve.setCrawlerIps("216\\.58\\.206\\.174");
        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
        valve.setNext(EasyMock.createMock(Valve.class));
        HttpSession session = createSessionExpectations(valve, true);
        Request request = createRequestExpectations("216.58.206.174", session, true);

        EasyMock.replay(request, session);

        valve.invoke(request, EasyMock.createMock(Response.class));

        EasyMock.verify(request, session);
    }

    @Test
    public void testCrawlerIpsNegative() throws Exception {
        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
        valve.setCrawlerIps("216\\.58\\.206\\.174");
        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
        valve.setNext(EasyMock.createMock(Valve.class));
        HttpSession session = createSessionExpectations(valve, false);
        Request request = createRequestExpectations("127.0.0.1", session, false);

        EasyMock.replay(request, session);

        valve.invoke(request, EasyMock.createMock(Response.class));

        EasyMock.verify(request, session);
    }

    @Test
    public void testCrawlerMultipleHostsHostAware() throws Exception {
        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
        valve.setHostAware(true);
        valve.setContextAware(true);
        valve.setNext(EasyMock.createMock(Valve.class));

        verifyCrawlingLocalhost(valve, "localhost");
        verifyCrawlingLocalhost(valve, "example.invalid");
    }

    @Test
    public void testCrawlerMultipleContextsContextAware() throws Exception {
        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
        valve.setHostAware(true);
        valve.setContextAware(true);
        valve.setNext(EasyMock.createMock(Valve.class));

        verifyCrawlingContext(valve, "/examples");
        verifyCrawlingContext(valve, null);
    }

    @Test
    public void testCrawlersSessionIdIsRemovedAfterSessionExpiry() throws IOException, ServletException {
        CrawlerSessionManagerValve valve = new CrawlerSessionManagerValve();
        valve.setCrawlerIps("216\\.58\\.206\\.174");
        valve.setCrawlerUserAgents(valve.getCrawlerUserAgents());
        valve.setNext(EasyMock.createMock(Valve.class));
        valve.setSessionInactiveInterval(0);
        StandardSession session = new StandardSession(TEST_MANAGER);
        session.setId("id");
        session.setValid(true);

        Request request = createRequestExpectations("216.58.206.174", session, true);

        EasyMock.replay(request);

        valve.invoke(request, EasyMock.createMock(Response.class));

        EasyMock.verify(request);

        MatcherAssert.assertThat(valve.getClientIpSessionId().values(), CoreMatchers.hasItem("id"));

        session.expire();

        Assert.assertEquals(0, valve.getClientIpSessionId().values().size());
    }


    private void verifyCrawlingLocalhost(CrawlerSessionManagerValve valve, String hostname)
            throws IOException, ServletException {
        HttpSession session = createSessionExpectations(valve, true);
        Request request = createRequestExpectations("127.0.0.1", session, true, hostname, "/examples", "tomcatBot 1.0");

        EasyMock.replay(request, session);

        valve.invoke(request, EasyMock.createMock(Response.class));

        EasyMock.verify(request, session);
    }


    private void verifyCrawlingContext(CrawlerSessionManagerValve valve, String contextPath)
            throws IOException, ServletException {
        HttpSession session = createSessionExpectations(valve, true);
        Request request = createRequestExpectations("127.0.0.1", session, true, "localhost", contextPath, "tomcatBot 1.0");

        EasyMock.replay(request, session);

        valve.invoke(request, EasyMock.createMock(Response.class));

        EasyMock.verify(request, session);
    }


    private HttpSession createSessionExpectations(CrawlerSessionManagerValve valve, boolean isBot) {
        HttpSession session = EasyMock.createMock(HttpSession.class);
        if (isBot) {
            EasyMock.expect(session.getId()).andReturn("id").times(2);
            session.setAttribute(EasyMock.eq(valve.getClass().getName()), EasyMock.anyObject(HttpSessionBindingListener.class));
            EasyMock.expectLastCall();
            session.setMaxInactiveInterval(60);
            EasyMock.expectLastCall();
        }
        return session;
    }


    private Request createRequestExpectations(String ip, HttpSession session, boolean isBot) {
        return createRequestExpectations(ip, session, isBot, "localhost", "/examples", "something 1.0");
    }

    private Request createRequestExpectations(String ip, HttpSession session, boolean isBot, String hostname,
            String contextPath, String userAgent) {
        Request request = EasyMock.createMock(Request.class);
        EasyMock.expect(request.getRemoteAddr()).andReturn(ip);
        EasyMock.expect(request.getHost()).andReturn(simpleHostWithName(hostname));
        EasyMock.expect(request.getContext()).andReturn(simpleContextWithName(contextPath));
        IExpectationSetters<HttpSession> setter = EasyMock.expect(request.getSession(false))
                .andReturn(null);
        if (isBot) {
            setter.andReturn(session);
        }
        EasyMock.expect(request.getHeaders("user-agent")).andAnswer(() -> Collections.enumeration(Arrays.asList(userAgent)));
        return request;
    }

    private Host simpleHostWithName(String hostname) {
        Host host = EasyMock.createMock(Host.class);
        EasyMock.expect(host.getName()).andReturn(hostname);
        EasyMock.replay(host);
        return host;
    }

    private Context simpleContextWithName(String contextPath) {
        if (contextPath == null) {
            return null;
        }
        Context context = EasyMock.createMock(Context.class);
        EasyMock.expect(context.getName()).andReturn(contextPath);
        EasyMock.replay(context);
        return context;
    }
}

1/**
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package org.apache.mahout.cf.taste.impl.recommender.svd;
19
20import org.apache.mahout.cf.taste.impl.TasteTestCase;
21import org.apache.mahout.cf.taste.impl.common.FastIDSet;
22import org.apache.mahout.cf.taste.model.DataModel;
23import org.apache.mahout.cf.taste.model.PreferenceArray;
24import org.apache.mahout.cf.taste.recommender.CandidateItemsStrategy;
25import org.apache.mahout.cf.taste.recommender.RecommendedItem;
26import org.easymock.EasyMock;
27import org.junit.Test;
28
29import java.util.List;
30
31public class SVDRecommenderTest extends TasteTestCase {
32
33  @Test
34  public void estimatePreference() throws Exception {
35    DataModel dataModel = EasyMock.createMock(DataModel.class);
36    Factorizer factorizer = EasyMock.createMock(Factorizer.class);
37    Factorization factorization = EasyMock.createMock(Factorization.class);
38
39    EasyMock.expect(factorizer.factorize()).andReturn(factorization);
40    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
41    EasyMock.expect(factorization.getItemFeatures(5L)).andReturn(new double[] { 1, 0.3 });
42    EasyMock.replay(dataModel, factorizer, factorization);
43
44    SVDRecommender svdRecommender = new SVDRecommender(dataModel, factorizer);
45
46    float estimate = svdRecommender.estimatePreference(1L, 5L);
47    assertEquals(1, estimate, EPSILON);
48
49    EasyMock.verify(dataModel, factorizer, factorization);
50  }
51
52  @Test
53  public void recommend() throws Exception {
54    DataModel dataModel = EasyMock.createMock(DataModel.class);
55    PreferenceArray preferencesFromUser = EasyMock.createMock(PreferenceArray.class);
56    CandidateItemsStrategy candidateItemsStrategy = EasyMock.createMock(CandidateItemsStrategy.class);
57    Factorizer factorizer = EasyMock.createMock(Factorizer.class);
58    Factorization factorization = EasyMock.createMock(Factorization.class);
59
60    FastIDSet candidateItems = new FastIDSet();
61    candidateItems.add(5L);
62    candidateItems.add(3L);
63
64    EasyMock.expect(factorizer.factorize()).andReturn(factorization);
65    EasyMock.expect(dataModel.getPreferencesFromUser(1L)).andReturn(preferencesFromUser);
66    EasyMock.expect(candidateItemsStrategy.getCandidateItems(1L, preferencesFromUser, dataModel))
67        .andReturn(candidateItems);
68    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
69    EasyMock.expect(factorization.getItemFeatures(5L)).andReturn(new double[] { 1, 0.3 });
70    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
71    EasyMock.expect(factorization.getItemFeatures(3L)).andReturn(new double[] { 2, 0.6 });
72
73    EasyMock.replay(dataModel, candidateItemsStrategy, factorizer, factorization);
74
75    SVDRecommender svdRecommender = new SVDRecommender(dataModel, factorizer, candidateItemsStrategy);
76
77    List<RecommendedItem> recommendedItems = svdRecommender.recommend(1L, 5);
78    assertEquals(2, recommendedItems.size());
79    assertEquals(3L, recommendedItems.get(0).getItemID());
80    assertEquals(2.0f, recommendedItems.get(0).getValue(), EPSILON);
81    assertEquals(5L, recommendedItems.get(1).getItemID());
82    assertEquals(1.0f, recommendedItems.get(1).getValue(), EPSILON);
83
84    EasyMock.verify(dataModel, candidateItemsStrategy, factorizer, factorization);
85  }
86}
87

Source: SVDRecommenderTest.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.mahout.cf.taste.impl.recommender.svd;

import org.apache.mahout.cf.taste.impl.TasteTestCase;
import org.apache.mahout.cf.taste.impl.common.FastIDSet;
import org.apache.mahout.cf.taste.model.DataModel;
import org.apache.mahout.cf.taste.model.PreferenceArray;
import org.apache.mahout.cf.taste.recommender.CandidateItemsStrategy;
import org.apache.mahout.cf.taste.recommender.RecommendedItem;
import org.easymock.EasyMock;
import org.junit.Test;

import java.util.List;

public class SVDRecommenderTest extends TasteTestCase {

  @Test
  public void estimatePreference() throws Exception {
    DataModel dataModel = EasyMock.createMock(DataModel.class);
    Factorizer factorizer = EasyMock.createMock(Factorizer.class);
    Factorization factorization = EasyMock.createMock(Factorization.class);

    EasyMock.expect(factorizer.factorize()).andReturn(factorization);
    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
    EasyMock.expect(factorization.getItemFeatures(5L)).andReturn(new double[] { 1, 0.3 });
    EasyMock.replay(dataModel, factorizer, factorization);

    SVDRecommender svdRecommender = new SVDRecommender(dataModel, factorizer);

    float estimate = svdRecommender.estimatePreference(1L, 5L);
    assertEquals(1, estimate, EPSILON);

    EasyMock.verify(dataModel, factorizer, factorization);
  }

  @Test
  public void recommend() throws Exception {
    DataModel dataModel = EasyMock.createMock(DataModel.class);
    PreferenceArray preferencesFromUser = EasyMock.createMock(PreferenceArray.class);
    CandidateItemsStrategy candidateItemsStrategy = EasyMock.createMock(CandidateItemsStrategy.class);
    Factorizer factorizer = EasyMock.createMock(Factorizer.class);
    Factorization factorization = EasyMock.createMock(Factorization.class);

    FastIDSet candidateItems = new FastIDSet();
    candidateItems.add(5L);
    candidateItems.add(3L);

    EasyMock.expect(factorizer.factorize()).andReturn(factorization);
    EasyMock.expect(dataModel.getPreferencesFromUser(1L)).andReturn(preferencesFromUser);
    EasyMock.expect(candidateItemsStrategy.getCandidateItems(1L, preferencesFromUser, dataModel))
        .andReturn(candidateItems);
    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
    EasyMock.expect(factorization.getItemFeatures(5L)).andReturn(new double[] { 1, 0.3 });
    EasyMock.expect(factorization.getUserFeatures(1L)).andReturn(new double[] { 0.4, 2 });
    EasyMock.expect(factorization.getItemFeatures(3L)).andReturn(new double[] { 2, 0.6 });

    EasyMock.replay(dataModel, candidateItemsStrategy, factorizer, factorization);

    SVDRecommender svdRecommender = new SVDRecommender(dataModel, factorizer, candidateItemsStrategy);

    List<RecommendedItem> recommendedItems = svdRecommender.recommend(1L, 5);
    assertEquals(2, recommendedItems.size());
    assertEquals(3L, recommendedItems.get(0).getItemID());
    assertEquals(2.0f, recommendedItems.get(0).getValue(), EPSILON);
    assertEquals(5L, recommendedItems.get(1).getItemID());
    assertEquals(1.0f, recommendedItems.get(1).getValue(), EPSILON);

    EasyMock.verify(dataModel, candidateItemsStrategy, factorizer, factorization);
  }
}

1/**
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package org.apache.mahout.cf.taste.impl.similarity.jdbc;
19
20import org.apache.mahout.cf.taste.impl.TasteTestCase;
21import org.apache.mahout.cf.taste.similarity.ItemSimilarity;
22import org.easymock.EasyMock;
23import org.junit.Test;
24
25import javax.sql.DataSource;
26import java.sql.Connection;
27import java.sql.PreparedStatement;
28import java.sql.ResultSet;
29
30public class MySQLJDBCInMemoryItemSimilarityTest extends TasteTestCase {
31
32  @Test
33  public void testMemoryLoad() throws Exception {
34
35    DataSource dataSource = EasyMock.createMock(DataSource.class);
36    Connection connection = EasyMock.createMock(Connection.class);
37    PreparedStatement statement = EasyMock.createMock(PreparedStatement.class);
38    ResultSet resultSet = EasyMock.createMock(ResultSet.class);
39
40    EasyMock.expect(dataSource.getConnection()).andReturn(connection);
41    EasyMock.expect(connection.prepareStatement(MySQLJDBCInMemoryItemSimilarity.DEFAULT_GET_ALL_ITEMSIMILARITIES_SQL,
42        ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY)).andReturn(statement);
43    statement.setFetchDirection(ResultSet.FETCH_FORWARD);
44    EasyMock.expect(statement.executeQuery()).andReturn(resultSet);
45
46    EasyMock.expect(resultSet.next()).andReturn(true);
47
48    EasyMock.expect(resultSet.getLong(1)).andReturn(1L);
49    EasyMock.expect(resultSet.getLong(2)).andReturn(2L);
50    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.5);
51    EasyMock.expect(resultSet.next()).andReturn(true);
52
53    EasyMock.expect(resultSet.getLong(1)).andReturn(1L);
54    EasyMock.expect(resultSet.getLong(2)).andReturn(3L);
55    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.4);
56    EasyMock.expect(resultSet.next()).andReturn(true);
57
58    EasyMock.expect(resultSet.getLong(1)).andReturn(3L);
59    EasyMock.expect(resultSet.getLong(2)).andReturn(4L);
60    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.1);
61
62    EasyMock.expect(resultSet.next()).andReturn(false);
63
64    resultSet.close();
65    statement.close();
66    connection.close();
67
68    EasyMock.replay(dataSource, connection, statement, resultSet);
69
70    ItemSimilarity similarity = new MySQLJDBCInMemoryItemSimilarity(dataSource);
71
72    assertEquals(0.5, similarity.itemSimilarity(1L, 2L), EPSILON);
73    assertEquals(0.4, similarity.itemSimilarity(1L, 3L), EPSILON);
74    assertEquals(0.1, similarity.itemSimilarity(3L, 4L), EPSILON);
75    assertTrue(Double.isNaN(similarity.itemSimilarity(1L, 4L)));
76
77    EasyMock.verify(dataSource, connection, statement, resultSet);
78  }
79}
80

Source: MySQLJDBCInMemoryItemSimilarityTest.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.mahout.cf.taste.impl.similarity.jdbc;

import org.apache.mahout.cf.taste.impl.TasteTestCase;
import org.apache.mahout.cf.taste.similarity.ItemSimilarity;
import org.easymock.EasyMock;
import org.junit.Test;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class MySQLJDBCInMemoryItemSimilarityTest extends TasteTestCase {

  @Test
  public void testMemoryLoad() throws Exception {

    DataSource dataSource = EasyMock.createMock(DataSource.class);
    Connection connection = EasyMock.createMock(Connection.class);
    PreparedStatement statement = EasyMock.createMock(PreparedStatement.class);
    ResultSet resultSet = EasyMock.createMock(ResultSet.class);

    EasyMock.expect(dataSource.getConnection()).andReturn(connection);
    EasyMock.expect(connection.prepareStatement(MySQLJDBCInMemoryItemSimilarity.DEFAULT_GET_ALL_ITEMSIMILARITIES_SQL,
        ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY)).andReturn(statement);
    statement.setFetchDirection(ResultSet.FETCH_FORWARD);
    EasyMock.expect(statement.executeQuery()).andReturn(resultSet);

    EasyMock.expect(resultSet.next()).andReturn(true);

    EasyMock.expect(resultSet.getLong(1)).andReturn(1L);
    EasyMock.expect(resultSet.getLong(2)).andReturn(2L);
    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.5);
    EasyMock.expect(resultSet.next()).andReturn(true);

    EasyMock.expect(resultSet.getLong(1)).andReturn(1L);
    EasyMock.expect(resultSet.getLong(2)).andReturn(3L);
    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.4);
    EasyMock.expect(resultSet.next()).andReturn(true);

    EasyMock.expect(resultSet.getLong(1)).andReturn(3L);
    EasyMock.expect(resultSet.getLong(2)).andReturn(4L);
    EasyMock.expect(resultSet.getDouble(3)).andReturn(0.1);

    EasyMock.expect(resultSet.next()).andReturn(false);

    resultSet.close();
    statement.close();
    connection.close();

    EasyMock.replay(dataSource, connection, statement, resultSet);

    ItemSimilarity similarity = new MySQLJDBCInMemoryItemSimilarity(dataSource);

    assertEquals(0.5, similarity.itemSimilarity(1L, 2L), EPSILON);
    assertEquals(0.4, similarity.itemSimilarity(1L, 3L), EPSILON);
    assertEquals(0.1, similarity.itemSimilarity(3L, 4L), EPSILON);
    assertTrue(Double.isNaN(similarity.itemSimilarity(1L, 4L)));

    EasyMock.verify(dataSource, connection, statement, resultSet);
  }
}