Add tests for custom locale folder.

Author: ADmad

tests/TestCase/I18n/MessagesFileLoaderTest.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * CakePHP(tm) Tests <http://book.cakephp.org/2.0/en/development/testing.html>
+ * 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://book.cakephp.org/2.0/en/development/testing.html CakePHP(tm) Tests
+ * @since         3.0.0
+ * @license       http://www.opensource.org/licenses/mit-license.php MIT License
+ */
+namespace Cake\Test\TestCase\I18n;
+
+use Cake\Core\Configure;
+use Cake\I18n\MessagesFileLoader;
+use Cake\TestSuite\TestCase;
+
+/**
+ * MessagesFileLoaderTest class
+ *
+ */
+class MessagesFileLoaderTest extends TestCase {
+
+/**
+ * Set Up
+ *
+ * @return void
+ */
+	public function setUp() {
+		parent::setUp();
+		$this->localePaths = Configure::read('App.paths.locales');
+	}
+
+/**
+ * Tear down method
+ *
+ * @return void
+ */
+	public function tearDown() {
+		parent::tearDown();
+		Configure::write('App.paths.locales', $this->localePaths);
+	}
+
+/**
+ * test reading file from custom locale folder
+ *
+ * @return void
+ */
+	public function testCustomLocalePath() {
+		$loader = new MessagesFileLoader('default', 'en');
+		$package = $loader();
+		$messages = $package->getMessages();
+		$this->assertEquals('Po (translated)', $messages['Plural Rule 1']);
+
+		Configure::write('App.paths.locales', [TEST_APP . 'custom_locale' . DS]);
+		$loader = new MessagesFileLoader('default', 'en');
+		$package = $loader();
+		$messages = $package->getMessages();
+		$this->assertEquals('Po (translated) from custom folder', $messages['Plural Rule 1']);
+	}
+
+}

tests/test_app/custom_locale/en/default.po

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+msgid "Plural Rule 1"
+msgstr "Po (translated) from custom folder"