Regression test

Closes phpstan/phpstan#10159

Author: ondrejmirtes

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -3354,4 +3354,13 @@ public function testTraitMixin(): void
 		$this->analyse([__DIR__ . '/data/trait-mixin.php'], []);
 	}
 
+	public function testBug10159(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = true;
+		$this->checkUnionTypes = true;
+		$this->checkExplicitMixed = true;
+		$this->analyse([__DIR__ . '/data/bug-10159.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Methods/data/bug-10159.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Bug10159;
+
+class Mixin {
+	public function someMethod(): object
+	{
+		return (object) [];
+	}
+}
+
+/**
+ * @mixin Mixin
+ */
+class ParentClass
+{}
+
+/**
+ * @method ChildClass someMethod()
+ */
+class ChildClass extends ParentClass
+{
+	public function methodFromChild(): void
+	{}
+}
+
+function (): void {
+	$childClass = new ChildClass();
+	$childClass->someMethod()->methodFromChild();
+};