java/perftests/visualisation-jfc/src/test/java/org/apache/qpid/disttest/charting/seriesbuilder/JdbcSeriesBuilderTest.java

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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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package org.apache.qpid.disttest.charting.seriesbuilder;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.Collections;

import org.apache.qpid.disttest.charting.definition.SeriesDefinition;
import org.apache.qpid.test.utils.QpidTestCase;

public class JdbcSeriesBuilderTest extends QpidTestCase
{
    private static final String TEST_SERIES_1_SELECT_STATEMENT = "SELECT A, B FROM test";
    private static final String TEST_SERIES_1_LEGEND = "SERIES_1_LEGEND";
    private static final String TEST_SERIES1_COLOUR_NAME = "blue";
    private static final Integer TEST_SERIES1_STROKE_WIDTH = 3;

    private DatasetHolder _seriesWalkerCallback = mock(DatasetHolder.class);

    private File _testTempDir;

    @Override
    protected void setUp() throws Exception
    {
        super.setUp();
        when(_seriesWalkerCallback.getNumberOfDimensions()).thenReturn(2);
        _testTempDir = createTestTemporaryDirectory();
        createTestCsvIn(_testTempDir);
    }

    public void testBuildOneSeries() throws Exception
    {
        SeriesDefinition seriesDefinition = createTestSeriesDefinition();

        JdbcSeriesBuilder seriesBuilder = new JdbcSeriesBuilder("org.relique.jdbc.csv.CsvDriver", null);

        seriesBuilder.setDatasetHolder(_seriesWalkerCallback);

        seriesBuilder.build(Collections.singletonList(seriesDefinition));

        verify(_seriesWalkerCallback).beginSeries(seriesDefinition);
        verify(_seriesWalkerCallback).addDataPointToSeries(seriesDefinition, new SeriesRow("elephant", "2"));
        verify(_seriesWalkerCallback).addDataPointToSeries(seriesDefinition, new SeriesRow("lion", "3"));
        verify(_seriesWalkerCallback).addDataPointToSeries(seriesDefinition, new SeriesRow("tiger", "4"));
        verify(_seriesWalkerCallback).endSeries(seriesDefinition);
    }

    private void createTestCsvIn(File testDir) throws Exception
    {
        File csv = new File(_testTempDir, "test.csv");

        PrintWriter csvWriter = new PrintWriter(new BufferedWriter(new FileWriter(csv)));
        csvWriter.println("A,B");
        csvWriter.println("elephant,2");
        csvWriter.println("lion,3");
        csvWriter.println("tiger,4");
        csvWriter.close();
    }

    private SeriesDefinition createTestSeriesDefinition()
    {
        SeriesDefinition definition = new SeriesDefinition(
                TEST_SERIES_1_SELECT_STATEMENT,
                TEST_SERIES_1_LEGEND,
                _testTempDir.getAbsolutePath(),
                TEST_SERIES1_COLOUR_NAME,
                TEST_SERIES1_STROKE_WIDTH);
        return definition;
    }

    private File createTestTemporaryDirectory() throws Exception
    {
        File tmpDir = new File(System.getProperty("java.io.tmpdir"), "testdef" + System.nanoTime());
        tmpDir.mkdirs();
        tmpDir.deleteOnExit();
        return tmpDir;
    }

}