Added some tests

Close to 65% coverage, just went for the low hanging fruit, mostly happy path.

tests/AYAHTest.php

@@ -0,0 +1,50 @@
+<?php
+
+class AYAHTest extends PHPUnit_Framework_TestCase
+{
+	// These keys are just for testing...
+	private $config = [
+		'publisher_key' => '01f70454bada303692be5f36a8fd104eba8b00dd',
+		'scoring_key'   => '80cc3f9c6e1da29369c238d55bd8528a968473ad',
+	];
+
+	private $ayah;
+
+	public function setUp()
+	{
+		$this->ayah = new AYAH($this->config);
+		$this->ayah->debug_mode(false);
+	}
+
+	public function testInstanceOf()
+	{
+		$this->assertInstanceOf('AYAH', $this->ayah);
+	}
+
+	public function testGetPublisherHTML()
+	{
+		$this->assertRegExp(
+			'/<div id=\'AYAH\'><\/div><script src=\'https:\/\/ws.areyouahuman.com\/ws\/script\/[a-z0-9]{40}\/ip[a-zA-Z0-9]{43}\' type=\'text\/javascript\' language=\'JavaScript\'><\/script>/',
+			$this->ayah->getPublisherHTML()
+		);
+	}
+
+	// Unfortunately there's no way to test a true response (mock maybe?)
+	public function testScoreResultFailure()
+	{
+		$this->assertFalse($this->ayah->scoreResult());
+	}
+
+	public function testRecordConversionMissingSessionSecret()
+	{
+		$this->assertFalse($this->ayah->recordConversion());
+	}
+
+	public function testDebugMode()
+	{
+		$this->expectOutputRegex('/Debug mode is now on./');
+		$this->assertTrue($this->ayah->debug_mode(true));
+	}
+}
+
+?>

tests/bootstrap.php

@@ -0,0 +1,7 @@
+<?php
+
+ini_set('date.timezone', 'UTC');
+
+require '../src/ayah.php';
+
+?>

tests/phpunit.xml

@@ -0,0 +1,22 @@
+<phpunit
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/3.7/phpunit.xsd"
+	bootstrap="bootstrap.php"
+	colors="true"
+	strict="true"
+	verbose="true"
+>
+	<testsuites>
+		<testsuite name="Are You A Human? Tests">
+			<directory>./</directory>
+		</testsuite>
+	</testsuites>
+	<logging>
+		<log
+			type="coverage-html"
+			target="/tmp/php-ayah"
+			charset="UTF-8"
+			highlight="true"
+		/>
+	</logging>
+</phpunit>