testcases updated

updated testcases to match new json schema
and updates with camel case function names

tests/PayPal/Test/Api/LinksTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace PayPal\Test\Api;
+
+use PayPal\Api\Links;
+use PayPal\Test\Constants;
+
+class LinksTest extends \PHPUnit_Framework_TestCase {
+
+	private $links;
+
+	public static $href = "USD";
+	public static $rel = "1.12";
+	public static $method = "1.12";
+	
+	public static function createLinks() {
+		$links = new Links();
+		$links->setHref(self::$href);
+		$links->setRel(self::$rel);
+		$links->setMethod(self::$method);
+		
+		return $links;
+	}
+	
+	public function setup() {
+		$this->links = self::createLinks();
+	}
+	
+	public function testGetterSetters() {
+		$this->assertEquals(self::$href, $this->links->getHref());
+		$this->assertEquals(self::$rel, $this->links->getRel());
+		$this->assertEquals(self::$method, $this->links->getMethod());
+	}
+	
+	public function testSerializeDeserialize() {
+		$link2 = new Links();
+		$link2->fromJson($this->links->toJSON());
+		$this->assertEquals($this->links, $link2);
+	}
+}