/** * test DBInputFormat class. Class should split result for chunks * @throws Exception */ @Test(timeout = 10000) public void testDBInputFormat() throws Exception { JobConf configuration = new JobConf(); setupDriver(configuration); DBInputFormat<NullDBWritable> format = new DBInputFormat<NullDBWritable>(); format.setConf(configuration); format.setConf(configuration); DBInputFormat.DBInputSplit splitter = new DBInputFormat.DBInputSplit(1, 10); Reporter reporter = mock(Reporter.class); RecordReader<LongWritable, NullDBWritable> reader = format.getRecordReader( splitter, configuration, reporter); configuration.setInt(MRJobConfig.NUM_MAPS, 3); InputSplit[] lSplits = format.getSplits(configuration, 3); assertEquals(5, lSplits[0].getLength()); assertEquals(3, lSplits.length); // test reader .Some simple tests assertEquals(LongWritable.class, reader.createKey().getClass()); assertEquals(0, reader.getPos()); assertEquals(0, reader.getProgress(), 0.001); reader.close(); }
/** * * test DBRecordReader. This reader should creates keys, values, know about position.. */ @SuppressWarnings("unchecked") @Test (timeout = 5000) public void testDBRecordReader() throws Exception { JobConf job = mock(JobConf.class); DBConfiguration dbConfig = mock(DBConfiguration.class); String[] fields = { "field1", "filed2" }; @SuppressWarnings("rawtypes") DBRecordReader reader = new DBInputFormat<NullDBWritable>().new DBRecordReader( new DBInputSplit(), NullDBWritable.class, job, DriverForTest.getConnection(), dbConfig, "condition", fields, "table"); LongWritable key = reader.createKey(); assertEquals(0, key.get()); DBWritable value = reader.createValue(); assertEquals( "org.apache.hadoop.mapred.lib.db.DBInputFormat$NullDBWritable", value .getClass().getName()); assertEquals(0, reader.getPos()); assertFalse(reader.next(key, value)); }