Added some test for the LocaleSelectorFilter

tests/TestCase/Routing/Filter/LocaleSelectorFilterTest.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
+ * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ *
+ * Licensed under The MIT License
+ * For full copyright and license information, please see the LICENSE.txt
+ * Redistributions of files must retain the above copyright notice.
+ *
+ * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
+ * @link          http://cakephp.org CakePHP(tm) Project
+ * @since         3.0.0
+ * @license       http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+namespace Cake\Test\TestCase\Routing\Filter;
+
+use Cake\Event\Event;
+use Cake\Network\Request;
+use Cake\Routing\Filter\LocaleSelectorFilter;
+use Cake\TestSuite\TestCase;
+use Locale;
+
+/**
+ * Locale selector filter test.
+ */
+class LocaleSelectorFilterTest extends TestCase {
+
+	public function tearDown() {
+		parent::tearDown();
+		Locale::setDefault('');
+	}
+
+	public function testSimpleSelection() {
+		$filter = new LocaleSelectorFilter();
+		$request = new Request([
+			'environment' => ['HTTP_ACCEPT_LANGUAGE' => 'en-GB,en;q=0.8,es;q=0.6,da;q=0.4']
+		]);
+		$filter->beforeDispatch(new Event('name', null, ['request' => $request]));
+		$this->assertEquals('en_GB', Locale::getDefault());
+
+		$request = new Request([
+			'environment' => ['HTTP_ACCEPT_LANGUAGE' => 'es_VE,en;q=0.8,es;q=0.6,da;q=0.4']
+		]);
+		$filter->beforeDispatch(new Event('name', null, ['request' => $request]));
+		$this->assertEquals('es_VE', Locale::getDefault());
+
+		$request = new Request([
+			'environment' => ['HTTP_ACCEPT_LANGUAGE' => 'en;q=0.4,es;q=0.6,da;q=0.8']
+		]);
+		$filter->beforeDispatch(new Event('name', null, ['request' => $request]));
+		$this->assertEquals('da', Locale::getDefault());
+	}
+
+}