Add test for #6095

Author: sebastianbergmann

tests/end-to-end/regression/6095.phpt

@@ -0,0 +1,31 @@
+--TEST--
+https://github.com/sebastianbergmann/phpunit/issues/6095
+--XFAIL--
+https://github.com/sebastianbergmann/phpunit/issues/6095
+--FILE--
+<?php declare(strict_types=1);
+$_SERVER['argv'][] = '--do-not-cache-result';
+$_SERVER['argv'][] = '--no-configuration';
+$_SERVER['argv'][] = __DIR__ . '/6095/Issue6095Test.php';
+
+require_once __DIR__ . '/../../bootstrap.php';
+
+(new PHPUnit\TextUI\Application)->run($_SERVER['argv']);
+--EXPECTF--
+PHPUnit %s by Sebastian Bergmann and contributors.
+
+Runtime: %s
+
+F                                                                   1 / 1 (100%)
+
+Time: %s, Memory: %s
+
+There was 1 failure:
+
+1) PHPUnit\TestFixture\Issue6095\Issue6095Test::testOne
+PHPUnit\TestFixture\MockObject\AnInterface::doSomething() was not expected to be called more than once.
+
+%sIssue6095Test.php:26
+
+FAILURES!
+Tests: 1, Assertions: 1, Failures: 1.

tests/end-to-end/regression/6095/Issue6095Test.php

@@ -0,0 +1,28 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace PHPUnit\TestFixture\Issue6095;
+
+use PHPUnit\Framework\TestCase;
+use PHPUnit\TestFixture\MockObject\AnInterface;
+
+final class Issue6095Test extends TestCase
+{
+    public function testOne(): void
+    {
+        $mock = $this->createMock(AnInterface::class);
+
+        $mock
+            ->expects($this->once())
+            ->method('doSomething');
+
+        $mock->doSomething();
+        $mock->doSomething();
+    }
+}