Added cost and tests

tests/GoogleProfanityTest.php

@@ -0,0 +1,50 @@
+<?php
+
+require_once '../src/GoogleProfanity.php';
+
+class GoogleProfanityTest extends PHPUnit_Framework_TestCase
+{
+    private $profanity;
+
+    public function setUp()
+    {
+        $this->profanity = new joshtronic\GoogleProfanity();
+    }
+
+    /**
+     * @dataProvider providerFormatPhoneNumber
+     */
+    public function testCheck($a, $b)
+    {
+        $this->assertEquals($b, $this->profanity->check($a));
+    }
+
+    public function providerFormatPhoneNumber()
+    {
+        return array(
+            array('alpha',      false),
+            array('beta',       false),
+            array('joshtronic', false),
+            array('god',        false),
+            array('fck',        false),
+            array('fuck',       true),
+            array('shit',       true),
+            array('cocksucker', true),
+            array('cuntface',   false), // Unsure why not...
+        );
+    }
+
+    /**
+     * @expectedException        Exception
+     * @expectedExceptionMessage Invalid response from API.
+     */
+    public function testInvalidResponse()
+    {
+        $file = SITE_PATH . 'null-';
+
+        file_put_contents($file . 'test', null);
+
+        $this->profanity->check('test', $file);
+    }
+}
+