### Question:
NTriplesDataSource extends ColumnarDataSource { public void setIncrementalMode(boolean incremental) { this.incremental = incremental; } NTriplesDataSource(); void setInputFile(String file); void setAcceptTypes(String types); void setReader(Reader reader); void setIncrementalMode(boolean incremental); RecordIterator getRecords(); @Override void writeConfig(ConfigWriter cw);  }### Answer:
@Test public void testEmptyIncremental() { source.setIncrementalMode(true); testEmpty(); }
@Test public void testEmptyBlankInc() { source.setIncrementalMode(true); testEmptyBlank(); }
@Test public void testSingleRecordInc() { source.setIncrementalMode(true); testSingleRecord(); }
@Test public void testSingleRecord2Inc() { source.setIncrementalMode(true); testSingleRecord2(); }
@Test public void testSingleRecord2SpacesInc() { source.setIncrementalMode(true); testSingleRecord2Spaces(); }
@Test public void testTwoRecordsInc() { source.setIncrementalMode(true); testTwoRecords(); }
@Test public void testTypeFilteringInc() { source.setIncrementalMode(true); testTypeFiltering(); }
@Test public void testSingleRecordDoublePropInc() { source.setIncrementalMode(true); testSingleRecordDoubleProp(); }