unit test to reproduce single method except issue

tests/_files/ClassWithSinglePublicMethod.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * A class with only one public method
+ */
+class ClassWithSinglePublicMethod
+{
+    public function falseReturn()
+    {
+        return false;
+    }
+}

tests/unit/Framework/MockObject/MockBuilderTest.php

@@ -126,4 +126,13 @@ public function testProvidesAFluentInterface(): void
 
         $this->assertInstanceOf(MockBuilder::class, $spec);
     }
+
+    public function testExceptMethodFromClassWithSinglePublicMethod(): void
+    {
+        $spec = $this->getMockBuilder(ClassWithSinglePublicMethod::class)
+                     ->setMethodsExcept(['falseReturn'])
+                     ->getMock();
+
+        $this->assertFalse($spec->falseReturn());
+    }
 }