Fixed inspection issues.

tests/Services/Attachments/AttachmentPathResolverTest.php

@@ -95,7 +95,7 @@ class AttachmentPathResolverTest extends WebTestCase
         $this->assertNull(self::$service->parameterToAbsolutePath('/./this/one/too'));
     }
 
-    public function placeholderDataProvider()
+    public function placeholderDataProvider(): array
     {
         return [
             ['%FOOTPRINTS%/test/test.jpg', self::$footprint_path.'/test/test.jpg'],
@@ -117,7 +117,7 @@ class AttachmentPathResolverTest extends WebTestCase
         ];
     }
 
-    public function realPathDataProvider()
+    public function realPathDataProvider(): array
     {
         return [
             [self::$media_path.'/test/img.jpg', '%MEDIA%/test/img.jpg'],

tests/Services/Attachments/AttachmentURLGeneratorTest.php

@@ -58,7 +58,7 @@ class AttachmentURLGeneratorTest extends WebTestCase
         self::$service = self::$container->get(AttachmentURLGenerator::class);
     }
 
-    public function dataProvider()
+    public function dataProvider(): array
     {
         return [
             ['/public/test.jpg', 'test.jpg'],

tests/Services/Attachments/BuiltinAttachmentsFinderTest.php

@@ -63,7 +63,7 @@ class BuiltinAttachmentsFinderTest extends WebTestCase
         self::$service = self::$container->get(BuiltinAttachmentsFinder::class);
     }
 
-    public function dataProvider()
+    public function dataProvider(): array
     {
         return [
             //No value should return empty array

tests/Services/PermissionResolverTest.php

@@ -109,7 +109,7 @@ class PermissionResolverTest extends WebTestCase
         $this->group->method('getParent')->willReturn($parent_group);
     }
 
-    public function getPermissionNames()
+    public function getPermissionNames(): array
     {
         //List all possible operation names.
         return [

tests/Services/PricedetailHelperTest.php

@@ -64,7 +64,7 @@ class PricedetailHelperTest extends WebTestCase
         $this->service = self::$container->get(PricedetailHelper::class);
     }
 
-    public function maxDiscountAmountDataProvider()
+    public function maxDiscountAmountDataProvider(): ?\Generator
     {
         $part = new Part();
         yield [$part, null, 'Part without any orderdetails failed!'];

tests/Services/TFA/BackupCodeGeneratorTest.php

@@ -66,7 +66,7 @@ class BackupCodeGeneratorTest extends TestCase
         new BackupCodeGenerator(4, 10);
     }
 
-    public function codeLengthDataProvider()
+    public function codeLengthDataProvider(): array
     {
         return [[6], [8], [10], [16]];
     }
@@ -80,7 +80,7 @@ class BackupCodeGeneratorTest extends TestCase
         $this->assertRegExp("/^([a-f0-9]){{$code_length}}\$/", $generator->generateSingleCode());
     }
 
-    public function codeCountDataProvider()
+    public function codeCountDataProvider(): array
     {
         return [[2], [8], [10]];
     }