Validation Package Testing

- Added More Unit Tests to Validation Classes
- Updated Logic accordingly

tests/PayPal/Test/Validation/ModelAccessValidatorTest.php

@@ -0,0 +1,50 @@
+<?php
+namespace PayPal\Test\Validation;
+
+use PayPal\Test\Common\SimpleClass;
+use PayPal\Validation\ModelAccessorValidator;
+
+class ModelAccessValidatorTest extends \PHPUnit_Framework_TestCase
+{
+
+    public static function positiveProvider()
+    {
+        return array(
+            array(new SimpleClass(), 'name'),
+            array(new SimpleClass(), 'description')
+        );
+    }
+
+    public static function invalidProvider()
+    {
+        return array(
+            array(null, null,'must be an instance of PayPal\Common\PayPalModel, null given'),
+            array(array(), array() ,'must be an instance of PayPal\Common\PayPalModel, array given'),
+            array(new SimpleClass(), null,'Error'),
+            array(new SimpleClass(), array(),'Error'),
+            array(null, 'name','must be an instance of PayPal\Common\PayPalModel, null given'),
+            array(new SimpleClass(),'notfound', 'Missing Accessor: PayPal\\Test\\Common\\SimpleClass:setnotfound')
+        );
+    }
+
+    /**
+     *
+     * @dataProvider positiveProvider
+     */
+    public function testValidate($class, $name)
+    {
+        $this->assertTrue(ModelAccessorValidator::validate($class, $name));
+    }
+
+    /**
+     *
+     * @dataProvider invalidProvider
+     */
+    public function testInvalidValidate($class, $name, $exMessage)
+    {   try {
+            $this->assertFalse(ModelAccessorValidator::validate($class, $name));
+        } catch(\Exception $ex) {
+            $this->assertContains($exMessage, $ex->getMessage());
+        }
+    }
+}