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<?php
/**
* ezcGraphDataSetAverageTest
*
* @package Graph
* @version //autogen//
* @subpackage Tests
* @copyright Copyright (C) 2005, 2006 eZ systems as. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
/**
* Tests for ezcGraph class.
*
* @package ImageAnalysis
* @subpackage Tests
*/
class ezcGraphDataSetAverageTest extends ezcTestCase
{
protected $basePath;
protected $tempDir;
public static function suite()
{
return new ezcTestSuite( "ezcGraphDataSetAverageTest" );
}
/**
* setUp
*
* @access public
*/
public function setUp()
{
static $i = 0;
$this->tempDir = $this->createTempDir( __CLASS__ . sprintf( '_%03d_', ++$i ) ) . '/';
$this->basePath = dirname( __FILE__ ) . '/data/';
}
/**
* tearDown
*
* @access public
*/
public function tearDown()
{
if( !$this->hasFailed() )
{
$this->removeTempDir();
}
}
/**
* Compares a generated image with a stored file
*
* @param string $generated Filename of generated image
* @param string $compare Filename of stored image
* @return void
*/
protected function compare( $generated, $compare )
{
$this->assertTrue(
file_exists( $generated ),
'No image file has been created.'
);
$this->assertTrue(
file_exists( $compare ),
'Comparision image does not exist.'
);
if ( md5_file( $generated ) !== md5_file( $compare ) )
{
// Adding a diff makes no sense here, because created XML uses
// only two lines
$this->fail( 'Rendered image is not correct.');
}
}
public function testCreateDatasetFromDataset()
{
$arrayDataSet = new ezcGraphArrayDataSet( array( -1 => 1, 0 => 0, 1 => 1 ) );
$averageDataSet = new ezcGraphDataSetAveragePolynom( $arrayDataSet );
$averageDataSet->polynomOrder = 2;
$polynom = $averageDataSet->getPolynom();
$this->assertEquals(
'x^2',
$polynom->__toString()
);
}
public function testCreateDatasetFromDataset2()
{
$arrayDataSet = new ezcGraphArrayDataSet( array( -1 => 2, 1 => 2, 3 => 10 ) );
$averageDataSet = new ezcGraphDataSetAveragePolynom( $arrayDataSet );
$averageDataSet->polynomOrder = 2;
$polynom = $averageDataSet->getPolynom();
$this->assertEquals(
'x^2 + 1.00',
$polynom->__toString()
);
}
public function testCreateDatasetFromDatasetLowOrder()
{
$arrayDataSet = new ezcGraphArrayDataSet( array( -1 => 2, 1 => 2, 3 => 10 ) );
$averageDataSet = new ezcGraphDataSetAveragePolynom( $arrayDataSet );
$averageDataSet->polynomOrder = 1;
$polynom = $averageDataSet->getPolynom();
$this->assertEquals(
'2.00 * x + 2.67',
$polynom->__toString()
);
}
public function testCreateDatasetFromDatasetHighOrder()
{
$arrayDataSet = new ezcGraphArrayDataSet( array( -1 => 2, 1 => 2, 3 => 10 ) );
$averageDataSet = new ezcGraphDataSetAveragePolynom( $arrayDataSet );
$averageDataSet->polynomOrder = 3;
$polynom = $averageDataSet->getPolynom();
$this->assertEquals(
'x^2 + 1.00',
$polynom->__toString()
);
}
public function testIterateOverAverageDataset()
{
$arrayDataSet = new ezcGraphArrayDataSet( array( -1 => 2, 1 => 2, 3 => 10 ) );
$averageDataSet = new ezcGraphDataSetAveragePolynom( $arrayDataSet );
$averageDataSet->polynomOrder = 3;
$this->assertEquals(
2.,
$averageDataSet[-1],
'Polynom should evaluate to 2.',
.01
);
$this->assertEquals(
2.,
$averageDataSet[1],
'Polynom should evaluate to 2.',
.01
);
$this->assertEquals(
5.,
$averageDataSet[2],
'Polynom should evaluate to 5.',
.01
);
$this->assertEquals(
10.,
$averageDataSet[3],
'Polynom should evaluate to 10.',
.01
);
}
public function testRenderCompleteLineChart()
{
$filename = $this->tempDir . __FUNCTION__ . '.svg';
$chart = new ezcGraphLineChart();
$chart->data['Statistical data'] = new ezcGraphArrayDataSet( array(
'1' => 1,
'2.5' => -2.3,
'3.1' => 1.4,
'4' => 5,
'5.3' => 1.2,
'7' => 6.5,
) );
$chart->data['Statistical data']->symbol = ezcGraph::BULLET;
$chart->data['polynom order 0'] = new ezcGraphDataSetAveragePolynom( $chart->data['Statistical data'] );
$chart->data['polynom order 0']->polynomOrder = 0;
$chart->data['polynom order 1'] = new ezcGraphDataSetAveragePolynom( $chart->data['Statistical data'] );
$chart->data['polynom order 1']->polynomOrder = 1;
$chart->data['polynom order 3'] = new ezcGraphDataSetAveragePolynom( $chart->data['Statistical data'] );
$chart->data['polynom order 3']->polynomOrder = 3;
$chart->data['polynom order 5'] = new ezcGraphDataSetAveragePolynom( $chart->data['Statistical data'] );
$chart->data['polynom order 5']->polynomOrder = 5;
$chart->xAxis = new ezcGraphChartElementNumericAxis();
$chart->render( 500, 200, $filename );
$this->compare(
$filename,
$this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
);
}
}
?>
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