test: cover invalid identify methods config fallback

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

tests/php/Unit/Service/IdentifyMethod/IdentifyServiceTest.php

@@ -8,6 +8,7 @@
 
 namespace OCA\Libresign\Tests\Unit\Service\IdentifyMethod;
 
+use OCA\Libresign\AppInfo\Application;
 use OCA\Libresign\Db\File;
 use OCA\Libresign\Db\FileMapper;
 use OCA\Libresign\Db\IdentifyMethod;
@@ -153,4 +154,24 @@ public function testPropagateIdentifiedDateSkipsCurrentRequestAndUpdatesSiblings
 
 		$this->service->save($identifyMethod);
 	}
+
+	public function testGetSavedSettingsFallsBackToDefaultWhenStoredValueIsInvalid(): void {
+		$this->appConfig
+			->expects($this->once())
+			->method('getValueArray')
+			->with(Application::APP_ID, 'identify_methods', [])
+			->willThrowException(new \TypeError('Invalid app config value type'));
+
+		$this->logger
+			->expects($this->once())
+			->method('warning')
+			->with(
+				'Invalid identify_methods app config; falling back to defaults.',
+				$this->callback(static function (array $context): bool {
+					return isset($context['exception']) && $context['exception'] instanceof \TypeError;
+				})
+			);
+
+		$this->assertSame([], $this->service->getSavedSettings());
+	}
 }