Improve unit test for translation files

app/Locale/zh_CN/translations.php

@@ -1092,11 +1092,11 @@ return array(
     'There is no available project.' => '当前没有可用项目',
     'Local File' => '本地文件',
     'Configuration' => '配置选项',
-    'PHP version:' => '',
-    'PHP SAPI:' => '',
-    'OS version:' => '',
-    'Database version:' => '',
-    'Browser:' => '',
+    // 'PHP version:' => '',
+    // 'PHP SAPI:' => '',
+    // 'OS version:' => '',
+    // 'Database version:' => '',
+    // 'Browser:' => '',
     'Task view' => '任务浏览',
     'Edit task' => '编辑任务',
     'Edit description' => '编辑描述',

tests/units/Locale/LocaleTest.php

@@ -10,13 +10,7 @@ class LocaleTest extends Base
             $locale = require($file . '/translations.php');
 
             foreach ($locale as $k => $v) {
-                if (strpos($k, '%B %e, %Y') !== false) {
-                    continue;
-                }
-
-                if (strpos($k, '%b %e, %Y') !== false) {
-                    continue;
-                }
+                $this->assertNotEmpty($v, 'Empty value for the key "'.$k.'" in translation '.basename($file));
 
                 foreach (array('%s', '%d') as $placeholder) {
                     $this->assertEquals(