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package org.apache.qpid.disttest.charting.writer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.io.File;
import java.io.FileWriter;
import java.io.InputStream;
import java.util.Scanner;
import org.apache.qpid.disttest.charting.definition.ChartingDefinition;
import org.apache.qpid.test.utils.QpidTestCase;
import org.apache.qpid.test.utils.TestFileUtils;
import org.apache.qpid.util.FileUtils;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;
public class ChartWriterTest extends QpidTestCase
{
private JFreeChart _chart1;
private JFreeChart _chart2;
private File _chartDir;
private ChartWriter _writer;
@Override
public void setUp()
{
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("a", 1);
dataset.setValue("b", 2);
_chart1 = ChartFactory.createPieChart("chart1", dataset, true, true, false);
_chart2 = ChartFactory.createPieChart("chart2", dataset, true, true, false);
_chartDir = TestFileUtils.createTestDirectory();
_writer = new ChartWriter();
_writer.setOutputDirectory(_chartDir);
}
public void testWriteChartToFileSystem()
{
ChartingDefinition chartDef1 = mock(ChartingDefinition.class);
when(chartDef1.getChartStemName()).thenReturn("chart1");
File chart1File = new File(_chartDir, "chart1.png");
assertFalse("chart1 png should not exist yet", chart1File.exists());
_writer.writeChartToFileSystem(_chart1, chartDef1);
assertTrue("chart1 png does not exist", chart1File.exists());
}
public void testWriteHtmlSummaryToFileSystemOverwritingExistingFile() throws Exception
{
ChartingDefinition chartDef1 = mock(ChartingDefinition.class);
when(chartDef1.getChartStemName()).thenReturn("chart1");
when(chartDef1.getChartDescription()).thenReturn("chart description1");
ChartingDefinition chartDef2 = mock(ChartingDefinition.class);
when(chartDef2.getChartStemName()).thenReturn("chart2");
File summaryFile = new File(_chartDir, ChartWriter.SUMMARY_FILE_NAME);
writeDummyContentToSummaryFileToEnsureItGetsOverwritten(summaryFile);
_writer.writeChartToFileSystem(_chart2, chartDef2);
_writer.writeChartToFileSystem(_chart1, chartDef1);
_writer.writeHtmlSummaryToFileSystem("Performance Charts");
InputStream expectedSummaryFileInputStream = getClass().getResourceAsStream("expected-chart-summary.html");
String expectedSummaryContent = new Scanner(expectedSummaryFileInputStream).useDelimiter("\\A").next();
String actualSummaryContent = FileUtils.readFileAsString(summaryFile);
assertEquals("HTML summary file has unexpected content", expectedSummaryContent, actualSummaryContent);
}
public void testWriteHtmlSummaryToFileSystemDoesNothingIfLessThanTwoCharts()
{
ChartingDefinition chartDef1 = mock(ChartingDefinition.class);
when(chartDef1.getChartStemName()).thenReturn("chart1");
when(chartDef1.getChartDescription()).thenReturn("chart description1");
File summaryFile = new File(_chartDir, ChartWriter.SUMMARY_FILE_NAME);
_writer.writeChartToFileSystem(_chart1, chartDef1);
_writer.writeHtmlSummaryToFileSystem("Performance Charts");
assertFalse("Only one chart generated so no summary file should have been written",
summaryFile.exists());
}
private void writeDummyContentToSummaryFileToEnsureItGetsOverwritten(File summaryFile) throws Exception
{
FileWriter writer = null;
try
{
writer = new FileWriter(summaryFile);
writer.write("dummy content");
writer.close();
}
finally
{
if (writer != null)
{
writer.close();
}
}
}
}