- Added matrix and polynom classes for future use in statistical datasets

1 files changed, 122 insertions, 0 deletions

diff --git a/tests/polynom_test.php b/tests/polynom_test.php
new file mode 100644
index 0000000..c46d8c5
--- /dev/null
+++ b/tests/polynom_test.php
@@ -0,0 +1,122 @@
+<?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
+        );
+    }
+}
+
+?>