Add trusted browser classes

- Added some tests

tests/src/Security/TwoFactor/Model/TrustedBrowserTest.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace Friendica\Test\src\Security\TwoFactor\Model;
+
+use Friendica\Security\TwoFactor\Model\TrustedBrowser;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Strings;
+
+class TrustedBrowserTest extends \PHPUnit_Framework_TestCase
+{
+	public function test__construct()
+	{
+		$hash = Strings::getRandomHex();
+
+		$trustedBrowser = new TrustedBrowser(
+			$hash,
+			42,
+			'PHPUnit',
+			DateTimeFormat::utcNow()
+		);
+
+		$this->assertEquals($hash, $trustedBrowser->cookie_hash);
+		$this->assertEquals(42, $trustedBrowser->uid);
+		$this->assertEquals('PHPUnit', $trustedBrowser->user_agent);
+		$this->assertNotEmpty($trustedBrowser->created);
+	}
+
+	public function testRecordUse()
+	{
+		$hash = Strings::getRandomHex();
+		$past = DateTimeFormat::utc('now - 5 minutes');
+
+		$trustedBrowser = new TrustedBrowser(
+			$hash,
+			42,
+			'PHPUnit',
+			$past,
+			$past
+		);
+
+		$trustedBrowser->recordUse();
+
+		$this->assertEquals($past, $trustedBrowser->created);
+		$this->assertGreaterThan($past, $trustedBrowser->last_used);
+	}
+}