[#5258] Fix JunitXmlLogger prepared state after each test's finish

Author: Slamdunk

src/Logging/JUnit/JunitXmlLogger.php

@@ -261,6 +261,7 @@ private function handleFinish(Info $telemetryInfo, int $numberOfAssertionsPerfor
 
         $this->currentTestCase = null;
         $this->time            = null;
+        $this->prepared        = false;
     }
 
     /**

tests/end-to-end/regression/5258.phpt

@@ -2,17 +2,21 @@
 https://github.com/sebastianbergmann/phpunit/issues/5258
 --FILE--
 <?php declare(strict_types=1);
+$junitFile = tempnam(sys_get_temp_dir(), __FILE__);
+
 $_SERVER['argv'][] = '--do-not-cache-result';
 $_SERVER['argv'][] = '--no-configuration';
 $_SERVER['argv'][] = '--log-junit';
-$_SERVER['argv'][] = '/dev/null';
+$_SERVER['argv'][] = $junitFile;
 $_SERVER['argv'][] = __DIR__ . '/5258/Issue5258Test.php';
 
 require_once __DIR__ . '/../../bootstrap.php';
 
 (new PHPUnit\TextUI\Application)->run($_SERVER['argv']);
---XFAIL--
-https://github.com/sebastianbergmann/phpunit/issues/5258
+
+print file_get_contents($junitFile);
+
+unlink($junitFile);
 --EXPECTF--
 PHPUnit %s by Sebastian Bergmann and contributors.
 
@@ -24,3 +28,12 @@ Time: %s, Memory: %s MB
 
 OK, but some tests were skipped!
 Tests: 2, Assertions: 1, Skipped: 1.
+<?xml version="1.0" encoding="UTF-8"?>
+<testsuites>
+  <testsuite name="PHPUnit\TestFixture\Issue5258\Issue5258Test" file="%sIssue5258Test.php" tests="2" assertions="1" errors="0" failures="0" skipped="1" time="%f">
+    <testcase name="testOne" file="%sIssue5258Test.php" line="%d" class="PHPUnit\TestFixture\Issue5258\Issue5258Test" classname="PHPUnit.TestFixture.Issue5258.Issue5258Test" assertions="1" time="%f"/>
+    <testcase name="testTwo" file="%sIssue5258Test.php" line="%d" class="PHPUnit\TestFixture\Issue5258\Issue5258Test" classname="PHPUnit.TestFixture.Issue5258.Issue5258Test" assertions="0" time="0.000000">
+      <skipped/>
+    </testcase>
+  </testsuite>
+</testsuites>