Rework tests structure. Upgrade codeception to 2.5.3. Merge params configuration into app configuration.

common/tests/unit/validators/LanguageValidatorTest.php

@@ -0,0 +1,50 @@
+<?php
+declare(strict_types=1);
+
+namespace common\tests\unit\validators;
+
+use common\validators\LanguageValidator;
+use common\tests\unit\TestCase;
+
+/**
+ * @covers \common\validators\LanguageValidator
+ */
+class LanguageValidatorTest extends TestCase {
+
+    /**
+     * @param string $locale
+     * @param bool $shouldBeValid
+     *
+     * @dataProvider getTestCases
+     */
+    public function testValidate(string $locale, bool $shouldBeValid): void {
+        $validator = new LanguageValidator();
+        $result = $validator->validate($locale, $error);
+        $this->assertSame($shouldBeValid, $result, $locale);
+        if (!$shouldBeValid) {
+            $this->assertSame($validator->message, $error);
+        }
+    }
+
+    public function getTestCases(): array {
+        return [
+            // valid
+            ['de', true],
+            ['de_DE', true],
+            ['deu', true],
+            ['en', true],
+            ['en_US', true],
+            ['fil', true],
+            ['fil_PH', true],
+            ['zh', true],
+            ['zh_Hans_CN', true],
+            ['zh_Hant_HK', true],
+            // invalid
+            ['de_FR', false],
+            ['fr_US', false],
+            ['foo_bar', false],
+            ['foo_bar_baz', false],
+        ];
+    }
+
+}