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18 package org.apache.hadoop.hbase.codec;
19
20 import static org.junit.Assert.assertEquals;
21 import static org.junit.Assert.assertFalse;
22 import static org.junit.Assert.assertTrue;
23
24 import java.io.ByteArrayInputStream;
25 import java.io.ByteArrayOutputStream;
26 import java.io.DataInputStream;
27 import java.io.DataOutputStream;
28 import java.io.IOException;
29
30 import org.apache.hadoop.hbase.KeyValue;
31 import org.apache.hadoop.hbase.SmallTests;
32 import org.apache.hadoop.hbase.codec.Codec;
33 import org.apache.hadoop.hbase.codec.KeyValueCodec;
34 import org.apache.hadoop.hbase.util.Bytes;
35 import org.junit.Test;
36 import org.junit.experimental.categories.Category;
37
38 import com.google.common.io.CountingInputStream;
39 import com.google.common.io.CountingOutputStream;
40
41 @Category(SmallTests.class)
42 public class TestKeyValueCodec {
43 @Test
44 public void testEmptyWorks() throws IOException {
45 ByteArrayOutputStream baos = new ByteArrayOutputStream();
46 CountingOutputStream cos = new CountingOutputStream(baos);
47 DataOutputStream dos = new DataOutputStream(cos);
48 KeyValueCodec kvc = new KeyValueCodec();
49 Codec.Encoder encoder = kvc.getEncoder(dos);
50 encoder.flush();
51 dos.close();
52 long offset = cos.getCount();
53 assertEquals(0, offset);
54 CountingInputStream cis =
55 new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
56 DataInputStream dis = new DataInputStream(cis);
57 Codec.Decoder decoder = kvc.getDecoder(dis);
58 assertFalse(decoder.advance());
59 dis.close();
60 assertEquals(0, cis.getCount());
61 }
62
63 @Test
64 public void testOne() throws IOException {
65 ByteArrayOutputStream baos = new ByteArrayOutputStream();
66 CountingOutputStream cos = new CountingOutputStream(baos);
67 DataOutputStream dos = new DataOutputStream(cos);
68 KeyValueCodec kvc = new KeyValueCodec();
69 Codec.Encoder encoder = kvc.getEncoder(dos);
70 final KeyValue kv =
71 new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"), Bytes.toBytes("v"));
72 final long length = kv.getLength() + Bytes.SIZEOF_INT;
73 encoder.write(kv);
74 encoder.flush();
75 dos.close();
76 long offset = cos.getCount();
77 assertEquals(length, offset);
78 CountingInputStream cis =
79 new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
80 DataInputStream dis = new DataInputStream(cis);
81 Codec.Decoder decoder = kvc.getDecoder(dis);
82 assertTrue(decoder.advance());
83
84 assertFalse(decoder.advance());
85 dis.close();
86 assertEquals(length, cis.getCount());
87 }
88
89 @Test
90 public void testThree() throws IOException {
91 ByteArrayOutputStream baos = new ByteArrayOutputStream();
92 CountingOutputStream cos = new CountingOutputStream(baos);
93 DataOutputStream dos = new DataOutputStream(cos);
94 KeyValueCodec kvc = new KeyValueCodec();
95 Codec.Encoder encoder = kvc.getEncoder(dos);
96 final KeyValue kv1 =
97 new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("1"), Bytes.toBytes("1"));
98 final KeyValue kv2 =
99 new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("2"), Bytes.toBytes("2"));
100 final KeyValue kv3 =
101 new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("3"), Bytes.toBytes("3"));
102 final long length = kv1.getLength() + Bytes.SIZEOF_INT;
103 encoder.write(kv1);
104 encoder.write(kv2);
105 encoder.write(kv3);
106 encoder.flush();
107 dos.close();
108 long offset = cos.getCount();
109 assertEquals(length * 3, offset);
110 CountingInputStream cis =
111 new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
112 DataInputStream dis = new DataInputStream(cis);
113 Codec.Decoder decoder = kvc.getDecoder(dis);
114 assertTrue(decoder.advance());
115 KeyValue kv = (KeyValue)decoder.current();
116 assertTrue(kv1.equals(kv));
117 assertTrue(decoder.advance());
118 kv = (KeyValue)decoder.current();
119 assertTrue(kv2.equals(kv));
120 assertTrue(decoder.advance());
121 kv = (KeyValue)decoder.current();
122 assertTrue(kv3.equals(kv));
123 assertFalse(decoder.advance());
124 dis.close();
125 assertEquals((length * 3), cis.getCount());
126 }
127 }