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19 package org.apache.giraph.edge;
20
21 import com.google.common.collect.Iterables;
22 import com.google.common.collect.Lists;
23 import org.apache.hadoop.io.DoubleWritable;
24 import org.apache.hadoop.io.LongWritable;
25 import org.junit.Before;
26 import org.junit.Test;
27
28 import java.util.Collection;
29 import java.util.List;
30
31 import static org.apache.giraph.graph.TestVertexAndEdges.instantiateOutEdges;
32 import static org.junit.Assert.assertEquals;
33
34
35
36
37 public class TestMultiRandomAccessEdges {
38
39 private Collection<Class<? extends MultiRandomAccessOutEdges>>
40 edgesClasses = Lists.newArrayList();
41
42 @Before
43 public void setUp() {
44 edgesClasses.add(HashMultimapEdges.class);
45 }
46
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51 @Test
52 public void testParallelEdges() {
53 for (Class<? extends MultiRandomAccessOutEdges> edgesClass :
54 edgesClasses) {
55 testParallelEdgesClass(edgesClass);
56 }
57 }
58
59 private void testParallelEdgesClass(
60 Class<? extends MultiRandomAccessOutEdges> edgesClass) {
61 MultiRandomAccessOutEdges<LongWritable, DoubleWritable> edges =
62 (MultiRandomAccessOutEdges<LongWritable, DoubleWritable>)
63 instantiateOutEdges(edgesClass);
64
65
66 List<Edge<LongWritable, DoubleWritable>> initialEdges = Lists.newArrayList(
67 EdgeFactory.create(new LongWritable(1), new DoubleWritable(1)),
68 EdgeFactory.create(new LongWritable(2), new DoubleWritable(2)),
69 EdgeFactory.create(new LongWritable(3), new DoubleWritable(3)),
70 EdgeFactory.create(new LongWritable(2), new DoubleWritable(20)));
71
72 edges.initialize(initialEdges);
73
74 assertEquals(2,
75 Iterables.size(edges.getAllEdgeValues(new LongWritable(2))));
76 assertEquals(1,
77 Iterables.size(edges.getAllEdgeValues(new LongWritable(1))));
78 assertEquals(0,
79 Iterables.size(edges.getAllEdgeValues(new LongWritable(42))));
80 }
81 }