Improve coverage slightly

Improves #66

lib/Lang.php

@@ -118,16 +118,14 @@ class Lang {
     }
 
     public function match(string $locale, array $list = null): string {
-        if ($list===null) {
-            $list = $this->listFiles();
-        }
+        $list = $list ?? $this->listFiles();
         $default = ($this->locale=="") ? self::DEFAULT : $this->locale;
         return \Locale::lookup($list, $locale, true, $default);
     }
 
     protected function checkRequirements(): bool {
         if (!extension_loaded("intl")) {
-            throw new ExceptionFatal("The \"Intl\" extension is required, but not loaded");
+            throw new ExceptionFatal("The \"Intl\" extension is required, but not loaded"); // @codeCoverageIgnore
         }
         $this->requirementsMet = true;
         return true;

tests/cases/Lang/TestErrors.php

@@ -67,4 +67,18 @@ class TestErrors extends \JKingWeb\Arsse\Test\AbstractTest {
         $this->assertException("defaultFileMissing", "Lang");
         $this->l->set("fr", true);
     }
+
+    public function testLoadMissingLanguageWhenFetching() {
+        $this->l->set("en_ca");
+        unlink($this->path.TestClass::DEFAULT.".php");
+        $this->assertException("fileMissing", "Lang");
+        $this->l->msg('Test.presentText');
+    }
+
+    public function testLoadMissingDefaultLanguageWhenFetching() {
+        unlink($this->path.TestClass::DEFAULT.".php");
+        $this->l = new TestClass($this->path);
+        $this->assertException("stringMissing", "Lang");
+        $this->l->msg('Test.presentText');
+    }
 }

tests/cases/REST/NextCloudNews/PDO/TestV1_2.php

@@ -6,7 +6,9 @@
 declare(strict_types=1);
 namespace JKingWeb\Arsse\TestCase\REST\NextCloudNews\PDO;
 
-/** @covers \JKingWeb\Arsse\REST\NextCloudNews\V1_2<extended> */
+/** @covers \JKingWeb\Arsse\REST\NextCloudNews\V1_2<extended>
+ *  @group optional
+ */
 class TestV1_2 extends \JKingWeb\Arsse\TestCase\REST\NextCloudNews\TestV1_2 {
     use \JKingWeb\Arsse\Test\PDOTest;
 }

tests/cases/REST/TinyTinyRSS/PDO/TestAPI.php

@@ -7,7 +7,8 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse\TestCase\REST\TinyTinyRSS\PDO;
 
 /** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\API<extended>
- *  @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Exception */
+ *  @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Exception
+ *  @group optional */
 class TestAPI extends \JKingWeb\Arsse\TestCase\REST\TinyTinyRSS\TestAPI {
     use \JKingWeb\Arsse\Test\PDOTest;
 }