Added regression test

Author: staabm

tests/PHPStan/Rules/Methods/OverridingMethodRuleTest.php

@@ -820,4 +820,11 @@ public function testFixOverride(): void
 		$this->fix(__DIR__ . '/data/fix-override-attribute.php', __DIR__ . '/data/fix-override-attribute.php.fixed');
 	}
 
+	#[RequiresPhp('>= 8.3')]
+	public function testFixWithTabs(): void
+	{
+		$this->phpVersionId = PHP_VERSION_ID;
+		$this->checkMissingOverrideMethodAttribute = true;
+		$this->fix(__DIR__ . '/data/fix-with-tabs.php', __DIR__ . '/data/fix-with-tabs.php.fixed');
+	}
 }

tests/PHPStan/Rules/Methods/data/fix-with-tabs.php

@@ -0,0 +1,28 @@
+<?php declare(strict_types = 1);
+
+namespace FixWithTabs;
+
+interface FooInterface {
+		/** @return Collection<BarI> */
+	public function foo(): Collection;
+}
+
+interface BarI
+{
+	
+}
+class Bar implements BarI {}
+
+/** @template-coveriant TValue */
+class Collection {}
+
+
+class Baz implements FooInterface
+{
+	/** @return Collection<Bar> */
+	public function foo(): Collection
+	{
+		/** @var Collection<Bar> */
+		return new Collection();
+	}
+}

tests/PHPStan/Rules/Methods/data/fix-with-tabs.php.fixed

@@ -0,0 +1,29 @@
+<?php declare(strict_types = 1);
+
+namespace FixWithTabs;
+
+interface FooInterface {
+		/** @return Collection<BarI> */
+	public function foo(): Collection;
+}
+
+interface BarI
+{
+	
+}
+class Bar implements BarI {}
+
+/** @template-coveriant TValue */
+class Collection {}
+
+
+class Baz implements FooInterface
+{
+	/** @return Collection<Bar> */
+	#[\Override]
+	public function foo(): Collection
+	{
+		/** @var Collection<Bar> */
+		return new Collection();
+	}
+}