package org.molgenis.io.csv;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertEquals;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Arrays;
import org.molgenis.io.processor.CellProcessor;
import org.molgenis.util.tuple.KeyValueTuple;
import org.molgenis.util.tuple.Tuple;
import org.molgenis.util.tuple.ValueTuple;
import org.testng.annotations.Test;
public class CsvWriterTest
{
@SuppressWarnings("resource")
@Test(expectedExceptions = IllegalArgumentException.class)
public void CsvWriter()
{
new CsvWriter((Writer) null);
}
@Test
public void addCellProcessor_header() throws IOException
{
CellProcessor processor = when(mock(CellProcessor.class).processHeader()).thenReturn(true).getMock();
KeyValueTuple tuple = new KeyValueTuple();
tuple.set("col1", "val1");
tuple.set("col2", "val2");
CsvWriter csvWriter = new CsvWriter(new StringWriter());
try
{
csvWriter.addCellProcessor(processor);
csvWriter.writeColNames(Arrays.asList("col1", "col2"));
csvWriter.write(tuple);
}
finally
{
csvWriter.close();
}
verify(processor).process("col1");
verify(processor).process("col2");
}
@Test
public void addCellProcessor_data() throws IOException
{
CellProcessor processor = when(mock(CellProcessor.class).processData()).thenReturn(true).getMock();
Tuple dataTuple = mock(Tuple.class);
when(dataTuple.getNrCols()).thenReturn(2);
when(dataTuple.get(0)).thenReturn("val1");
when(dataTuple.get(1)).thenReturn("val2");
CsvWriter csvWriter = new CsvWriter(new StringWriter());
try
{
csvWriter.addCellProcessor(processor);
csvWriter.write(dataTuple);
}
finally
{
csvWriter.close();
}
verify(processor).process("val1");
verify(processor).process("val2");
}
@Test
public void write() throws IOException
{
StringWriter strWriter = new StringWriter();
CsvWriter csvWriter = new CsvWriter(strWriter);
try
{
csvWriter.writeColNames(Arrays.asList("col1", "col2"));
KeyValueTuple row1 = new KeyValueTuple();
row1.set("col1", "val1");
row1.set("col2", "val2");
csvWriter.write(row1);
assertEquals(strWriter.toString(), "\"col1\",\"col2\"\n\"val1\",\"val2\"\n");
}
finally
{
csvWriter.close();
}
}
@Test
public void write_noHeader() throws IOException
{
StringWriter strWriter = new StringWriter();
CsvWriter csvWriter = new CsvWriter(strWriter);
try
{
csvWriter.write(new ValueTuple(Arrays.asList("val1", "val2")));
csvWriter.write(new ValueTuple(Arrays.asList("val3", "val4")));
assertEquals(strWriter.toString(), "\"val1\",\"val2\"\n\"val3\",\"val4\"\n");
}
finally
{
csvWriter.close();
}
}
@Test
public void write_Tsv() throws IOException
{
StringWriter strWriter = new StringWriter();
CsvWriter csvWriter = new CsvWriter(strWriter, '\t');
try
{
csvWriter.writeColNames(Arrays.asList("col1", "col2"));
KeyValueTuple row1 = new KeyValueTuple();
row1.set("col1", "val1");
row1.set("col2", "val2");
csvWriter.write(row1);
assertEquals(strWriter.toString(), "\"col1\"\t\"col2\"\n\"val1\"\t\"val2\"\n");
}
finally
{
csvWriter.close();
}
}
@Test
public void close() throws IOException
{
// FIXME enable when double closing bug in opencsv is fixed
// Writer writer = mock(Writer.class);
// CsvWriter csvWriter = new CsvWriter(writer);
// csvWriter.close();
// verify(writer).close();
}
}