Created test for all languages

tests/LanguagesTest.php

@@ -0,0 +1,37 @@
+<?php
+use l10n\Language\ILanguage;
+
+class LanguagesTest extends PHPUnit_Framework_TestCase {
+	public function filesProvider() {
+		$data = array();
+		$files = @glob(__DIR__ . '/../src/l10n/Language/*.php') ?: array();
+
+		foreach ($files as $file) {
+			$name = basename($file, '.php');
+
+			if ("ILanguage" != $name) {
+				$data[] = array("l10n\\Language\\$name");
+			}
+		}
+
+		return $data;
+	}
+
+	/**
+	 * @dataProvider filesProvider
+	 * @param $class
+	 */
+	public function testGetters($class) {
+		/** @var ILanguage $language */
+		$language = new $class;
+
+		$this->assertInternalType('string', $language->getIso639_1());
+		$this->assertInternalType('string', $language->getIso639_2());
+		$this->assertInternalType('string', $language->getEnglishName());
+		$this->assertInternalType('string', $language->getOriginalName());
+		$this->assertInternalType('bool', $language->isRtl());
+
+		$this->assertSame(2, $length = strlen($language->getIso639_1()), 'ISO 639-1 code must be 2 characters long.');
+		$this->assertSame(3, $length = strlen($language->getIso639_2()), 'ISO 639-2 code must be 3 characters long.');
+	}
+}