Add non regression test

Author: VincentLanglet

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -3608,6 +3608,25 @@ public function testBug9141(): void
 		$this->analyse([__DIR__ . '/data/bug-9141.php'], []);
 	}
 
+	public function testBug3589(): void
+	{
+		$this->checkThisOnly = false;
+		$this->checkNullables = true;
+		$this->checkUnionTypes = true;
+		$this->checkExplicitMixed = true;
+
+		$this->analyse([__DIR__ . '/data/bug-3589.php'], [
+			[
+				'Parameter #1 $fooId of method FooRepository::load() expects Id<Foo>, Id<Bar> given.',
+				33,
+			],
+			[
+				'Parameter #1 $fooId of method FooRepository::load() expects Id<Foo>, Id<mixed> given.',
+				39,
+			],
+		]);
+	}
+
 	public function testBug3396(): void
 	{
 		$this->checkThisOnly = false;

tests/PHPStan/Rules/Methods/data/bug-3589.php

@@ -0,0 +1,39 @@
+<?php declare(strict_types = 1);
+
+class Foo{}
+class Bar{}
+
+/**
+ * @template Tpl
+ */
+class Id{}
+
+class FooRepository
+{
+	/**
+	 * @param Id<Foo> $fooId
+	 */
+	public function load(Id $fooId): Foo
+	{
+		// ...
+		return new Foo;
+	}
+}
+
+$fooRepository = new FooRepository;
+
+// Expected behavior: no error
+/** @var Id<Foo> */
+$fooId = new Id;
+$fooRepository->load($fooId);
+
+// Expected behavior: error on line 33
+/** @var Id<Bar> */
+$barId = new Id;
+$fooRepository->load($barId);
+
+// Expected behavior: errors
+// - line 38 - Template Tpl is not specified
+// - line 39 - Parameter #1 fooId of method FooRepository::load() expects Id<Foo>, nonspecified Id given.
+$unknownId = new Id;
+$fooRepository->load($unknownId);