add unit tests

src/MessageSourceFallbackBehavior.php

@@ -23,6 +23,7 @@
  *                     'class' => yii1tech\i18n\fallback\MessageSourceFallbackBehavior::class,
  *                     'fallbackMessageSource' => [
  *                         'class' => CPhpMessageSource::class,
+ *                         'forceTranslation' => true,
  *                     ],
  *                 ],
  *             ],

tests/MessageSourceFallbackBehaviorTest.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace yii1tech\i18n\fallback\test;
+
+use CPhpMessageSource;
+use Yii;
+use yii1tech\i18n\fallback\MessageSourceFallbackBehavior;
+
+class MessageSourceFallbackBehaviorTest extends TestCase
+{
+    /**
+     * @param \yii1tech\i18n\fallback\MessageSourceFallbackBehavior|array $behavior
+     * @return void
+     */
+    protected function attachMessageSourceBehavior($behavior): void
+    {
+        Yii::app()->getComponent('messages')->attachBehavior('fallbackBehavior', $behavior);
+    }
+
+    public function testFallbackToDifferentSource(): void
+    {
+        $this->attachMessageSourceBehavior([
+            'class' => MessageSourceFallbackBehavior::class,
+            'fallbackMessageSource' => [
+                'class' => CPhpMessageSource::class,
+                'basePath' => __DIR__ . '/messages/fallback',
+                'forceTranslation' => true,
+            ],
+        ]);
+
+        $this->assertSame('title-main-en_us', Yii::t('content', 'title'));
+        $this->assertSame('header-fallback-en_us', Yii::t('content', 'header'));
+    }
+
+    public function testFallbackToDifferentLanguage(): void
+    {
+        $messageSource = Yii::app()->getComponent('messages');
+
+        $this->attachMessageSourceBehavior([
+            'class' => MessageSourceFallbackBehavior::class,
+            'fallbackLanguage' => 'en_us',
+            'fallbackMessageSource' => [
+                'class' => get_class($messageSource),
+                'basePath' => $messageSource->basePath,
+                'forceTranslation' => true,
+            ],
+        ]);
+
+        Yii::app()->setLanguage('es');
+
+        $this->assertSame('title-main-es', Yii::t('content', 'title'));
+        $this->assertSame('description-main-en_us', Yii::t('content', 'description'));
+    }
+}

tests/TestCase.php

@@ -43,6 +43,7 @@ protected function mockApplication($config = [], $appClass = \CWebApplication::c
                 'messages' => [
                     'class' => CPhpMessageSource::class,
                     'basePath' => __DIR__ . '/messages/main',
+                    'forceTranslation' => true,
                 ],
             ],
         ], $config));

tests/bootstrap.php

@@ -0,0 +1,14 @@
+<?php
+
+// ensure we get report on all possible php errors
+error_reporting(-1);
+
+define('YII_ENABLE_ERROR_HANDLER', false);
+define('YII_ENABLE_EXCEPTION_HANDLER', false);
+define('YII_DEBUG', true);
+
+$_SERVER['SCRIPT_NAME'] = '/' . __DIR__;
+$_SERVER['SCRIPT_FILENAME'] = __FILE__;
+
+require_once(__DIR__ . '/../vendor/autoload.php');
+require_once(__DIR__ . '/../vendor/yiisoft/yii/framework/yii.php');

tests/messages/fallback/en_us/content.php

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'title' => 'title-fallback-en_us',
+    'header' => 'header-fallback-en_us',
+];

tests/messages/main/en_us/content.php

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'title' => 'title-main-en_us',
+    'description' => 'description-main-en_us',
+];

tests/messages/main/es/content.php

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'title' => 'title-main-es',
+    'keywords' => 'keywords-main-es',
+];