MemoryGroupByDataTest.java

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 * Pentaho Data Integration
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 * Copyright (C) 2002-2016 by Pentaho : http://www.pentaho.com
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 * Licensed under the Apache License, Version 2.0 (the "License");
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package org.pentaho.di.trans.steps.memgroupby;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.runners.MockitoJUnitRunner;
import org.mockito.stubbing.Answer;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMetaInterface;

import java.util.HashMap;

import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyObject;
import static org.mockito.Mockito.when;
import static org.junit.Assert.assertEquals;

/**
 * Created by bmorrise on 2/11/16.
 */
@RunWith( MockitoJUnitRunner.class ) public class MemoryGroupByDataTest {

  private MemoryGroupByData data = new MemoryGroupByData();

  @Mock private RowMetaInterface groupMeta;
  @Mock private ValueMetaInterface valueMeta;

  @Before public void setUp() throws Exception {
    data.groupMeta = groupMeta;
    when( groupMeta.size() ).thenReturn( 1 );
    when( groupMeta.getValueMeta( anyInt() ) ).thenReturn( valueMeta );
    when( valueMeta.convertToNormalStorageType( anyObject() ) ).then( new Answer<Object>() {
      @Override public Object answer( InvocationOnMock invocation ) throws Throwable {
        Object argument = invocation.getArguments()[0];
        return new String( (byte[]) argument );
      }
    } );
  }

  @Test public void hashEntryTest() {
    HashMap<MemoryGroupByData.HashEntry, String> map = new HashMap<>();

    byte[] byteValue1 = "key".getBytes();
    Object[] groupData1 = new Object[1];
    groupData1[0] = byteValue1;

    MemoryGroupByData.HashEntry hashEntry1 = data.getHashEntry( groupData1 );
    map.put( hashEntry1, "value" );

    byte[] byteValue2 = "key".getBytes();
    Object[] groupData2 = new Object[1];
    groupData2[0] = byteValue2;

    MemoryGroupByData.HashEntry hashEntry2 = data.getHashEntry( groupData2 );

    String value = map.get( hashEntry2 );

    assertEquals( "value", value );
  }

}