From 71bde409a97afffb6a1efe323af684960bffbcc3 Mon Sep 17 00:00:00 2001
From: Sebastian Bergmann <sb@sebastian-bergmann.de>
Date: Sat, 8 Jun 2024 08:07:59 +0200
Subject: [PATCH] Add test

---
 .../unit/Framework/MockObject/TestDoubleTestCase.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tests/unit/Framework/MockObject/TestDoubleTestCase.php b/tests/unit/Framework/MockObject/TestDoubleTestCase.php
index f2cda235e0f..a8366f91027 100644
--- a/tests/unit/Framework/MockObject/TestDoubleTestCase.php
+++ b/tests/unit/Framework/MockObject/TestDoubleTestCase.php
@@ -254,6 +254,18 @@ final public function testOriginalCloneMethodCanOptionallyBeCalledWhenTestDouble
         clone $double;
     }
 
+    public function testMethodNameCanOnlyBeConfiguredOnce(): void
+    {
+        $double = $this->createTestDouble(InterfaceWithReturnTypeDeclaration::class);
+
+        $this->expectException(MethodNameAlreadyConfiguredException::class);
+
+        $double
+            ->method('doSomething')
+            ->method('doSomething')
+            ->willReturn(true);
+    }
+
     /**
      * @psalm-template RealInstanceType of object
      *