hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestReversedScannerCallable.java

   1 /**
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements.  See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership.  The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License.  You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18 package org.apache.hadoop.hbase.client;
  19
  20 import org.apache.hadoop.conf.Configuration;
  21 import org.apache.hadoop.hbase.HBaseClassTestRule;
  22 import org.apache.hadoop.hbase.HRegionLocation;
  23 import org.apache.hadoop.hbase.RegionLocations;
  24 import org.apache.hadoop.hbase.ServerName;
  25 import org.apache.hadoop.hbase.TableName;
  26 import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
  27 import org.apache.hadoop.hbase.testclassification.ClientTests;
  28 import org.apache.hadoop.hbase.testclassification.SmallTests;
  29 import org.apache.hadoop.hbase.util.Bytes;
  30 import org.junit.Before;
  31 import org.junit.ClassRule;
  32 import org.junit.Test;
  33 import org.junit.experimental.categories.Category;
  34 import org.junit.runner.RunWith;
  35 import org.mockito.Mock;
  36 import org.mockito.Mockito;
  37 import org.mockito.runners.MockitoJUnitRunner;
  38
  39 @RunWith(MockitoJUnitRunner.class)
  40 @Category({ ClientTests.class, SmallTests.class })
  41 public class TestReversedScannerCallable {
  42
  43   @ClassRule
  44   public static final HBaseClassTestRule CLASS_RULE =
  45       HBaseClassTestRule.forClass(TestReversedScannerCallable.class);
  46
  47   @Mock
  48   private ConnectionImplementation connection;
  49   @Mock
  50   private Scan scan;
  51   @Mock
  52   private RpcControllerFactory rpcFactory;
  53   @Mock
  54   private RegionLocations regionLocations;
  55
  56   private final byte[] ROW = Bytes.toBytes("row1");
  57
  58   @Before
  59   public void setUp() throws Exception {
  60     HRegionLocation regionLocation = Mockito.mock(HRegionLocation.class);
  61     ServerName serverName = Mockito.mock(ServerName.class);
  62
  63     Mockito.when(connection.getConfiguration()).thenReturn(new Configuration());
  64     Mockito.when(regionLocations.size()).thenReturn(1);
  65     Mockito.when(regionLocations.getRegionLocation(0)).thenReturn(regionLocation);
  66     Mockito.when(regionLocation.getHostname()).thenReturn("localhost");
  67     Mockito.when(regionLocation.getServerName()).thenReturn(serverName);
  68     Mockito.when(scan.includeStartRow()).thenReturn(true);
  69     Mockito.when(scan.getStartRow()).thenReturn(ROW);
  70   }
  71
  72   @Test
  73   public void testPrepareDoesNotUseCache() throws Exception {
  74     TableName tableName = TableName.valueOf("MyTable");
  75     Mockito.when(connection.relocateRegion(tableName, ROW, 0)).thenReturn(regionLocations);
  76
  77     ReversedScannerCallable callable =
  78         new ReversedScannerCallable(connection, tableName, scan, null, rpcFactory);
  79     callable.prepare(true);
  80
  81     Mockito.verify(connection).relocateRegion(tableName, ROW, 0);
  82   }
  83
  84   @Test
  85   public void testPrepareUsesCache() throws Exception {
  86     TableName tableName = TableName.valueOf("MyTable");
  87     Mockito.when(connection.locateRegion(tableName, ROW, true, true, 0))
  88         .thenReturn(regionLocations);
  89
  90     ReversedScannerCallable callable =
  91         new ReversedScannerCallable(connection, tableName, scan, null, rpcFactory);
  92     callable.prepare(false);
  93
  94     Mockito.verify(connection).locateRegion(tableName, ROW, true, true, 0);
  95   }
  96 }