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<?php
/**
* ezcGraphPolynomTest
*
* @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 ezcGraphPolynomTest extends ezcTestCase
{
public static function suite()
{
return new ezcTestSuite( "ezcGraphPolynomTest" );
}
/**
* setUp
*
* @access public
*/
public function setUp()
{
}
/**
* tearDown
*
* @access public
*/
public function tearDown()
{
}
public function testCreatePolynom()
{
$polynom = new ezcGraphPolynom( array( 2 => 1 ) );
$this->assertEquals(
'x^2',
$polynom->__to_string()
);
}
public function testCreatePolynom2()
{
$polynom = new ezcGraphPolynom( array( 2 => .5, 1 => 3, 0 => -4.5 ) );
$this->assertEquals(
'0.50 * x^2 + 3.00 * x + -4.50',
$polynom->__to_string()
);
}
public function testPolynomGetOrder()
{
$polynom = new ezcGraphPolynom( array( 2 => .5, 1 => 3, 0 => -4.5 ) );
$this->assertEquals(
2,
$polynom->getOrder()
);
}
public function testAddPolynom()
{
$polynom = new ezcGraphPolynom( array( 2 => .5, 1 => 3, 0 => -4.5 ) );
$polynom->add( new ezcGraphPolynom( array( 2 => 1 ) ) );
$this->assertEquals(
'1.50 * x^2 + 3.00 * x + -4.50',
$polynom->__to_string()
);
}
public function testEvaluatePolynom()
{
$polynom = new ezcGraphPolynom( array( 2 => 1 ) );
$this->assertEquals(
4.,
$polynom->evaluate( 2 ),
'Calculated wrong value',
.1
);
}
public function testEvaluatePolynomNegativeValue()
{
$polynom = new ezcGraphPolynom( array( 2 => 1 ) );
$this->assertEquals(
4.,
$polynom->evaluate( -2 ),
'Calculated wrong value',
.1
);
}
public function testEvaluateComplexPolynom()
{
$polynom = new ezcGraphPolynom( array( 2 => .5, 1 => 3, 0 => -4.5 ) );
$this->assertEquals(
9.,
$polynom->evaluate( 3 ),
'Calculated wrong value',
.1
);
}
}
?>
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