[DX] Cleanup and simplify class naming tests (#4749)

rules-tests/Renaming/Rector/Name/RenameClassRector/Fixture/class_to_interface.php.inc

@@ -2,25 +2,13 @@
 
 namespace Rector\Tests\Renaming\Rector\Name\RenameClassRector\Fixture;
 
-class ClassToInterface extends \DateTime
-{
-    public function run(\DateTime $dateTime): \DateTime
-    {
-        $oldClassWithTypo = new \DateTime();
-    }
-}
-
-?>
------
-<?php
-
-namespace Rector\Tests\Renaming\Rector\Name\RenameClassRector\Fixture;
+use Rector\Tests\Renaming\Rector\Name\RenameClassRector\Source\InterfaceAndClass\SomeBasicDateTime;
 
-class ClassToInterface extends \DateTime
+class ClassToInterface extends SomeBasicDateTime
 {
-    public function run(\DateTimeInterface $dateTime): \DateTimeInterface
+    public function run(\Rector\Tests\Renaming\Rector\Name\RenameClassRector\Source\InterfaceAndClass\SomeBasicDateTimeInterface $dateTime): \Rector\Tests\Renaming\Rector\Name\RenameClassRector\Source\InterfaceAndClass\SomeBasicDateTimeInterface
     {
-        $oldClassWithTypo = new \DateTime();
+        $oldClassWithTypo = new SomeBasicDateTime;
     }
 }
 

rules-tests/Renaming/Rector/Name/RenameClassRector/Fixture/do_not_replace_interface_static_call.php.inc

@@ -2,34 +2,14 @@
 
 namespace Rector\Tests\Renaming\Rector\Name\RenameClassRector\Fixture;
 
-use DateTime;
+use Rector\Tests\Renaming\Rector\Name\RenameClassRector\Source\InterfaceAndClass\SomeBasicDateTime;
 
 final class DoNotReplaceInterfaceCall
 {
     public function run($dateTime)
     {
-        if (! $dateTime instanceof DateTime) {
-            $dateTime = DateTime::createFromFormat('Y-m-d', date('Y-m-d'));
-        }
-
-        return $dateTime;
-    }
-}
-
-?>
------
-<?php
-
-namespace Rector\Tests\Renaming\Rector\Name\RenameClassRector\Fixture;
-
-use DateTime;
-
-final class DoNotReplaceInterfaceCall
-{
-    public function run($dateTime)
-    {
-        if (! $dateTime instanceof \DateTimeInterface) {
-            $dateTime = DateTime::createFromFormat('Y-m-d', date('Y-m-d'));
+        if (! $dateTime instanceof \Rector\Tests\Renaming\Rector\Name\RenameClassRector\Source\InterfaceAndClass\SomeBasicDateTimeInterface) {
+            $dateTime = SomeBasicDateTime::createFromFormat('Y-m-d', date('Y-m-d'));
         }
 
         return $dateTime;