From be407ac9041ad3f0294479c20683025494c831c4 Mon Sep 17 00:00:00 2001
From: Caleb White <cdwhite3@pm.me>
Date: Thu, 11 Jan 2024 10:14:44 -0600
Subject: [PATCH] fix: warn if no code coverage driver

---
 src/Plugins/Parallel/Paratest/WrapperRunner.php | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Plugins/Parallel/Paratest/WrapperRunner.php b/src/Plugins/Parallel/Paratest/WrapperRunner.php
index 46c1f994..b0dc5232 100644
--- a/src/Plugins/Parallel/Paratest/WrapperRunner.php
+++ b/src/Plugins/Parallel/Paratest/WrapperRunner.php
@@ -363,6 +363,15 @@ private function generateCodeCoverageReports(): void
             $this->codeCoverageFilterRegistry,
             false,
         );
+        if (! $coverageManager->isActive()) {
+            $this->output->writeln([
+                '',
+                '  <fg=black;bg=yellow;options=bold> WARN </> No code coverage driver is available.</>',
+                '',
+            ]);
+
+            return;
+        }
         $coverageMerger = new CoverageMerger($coverageManager->codeCoverage());
         foreach ($this->coverageFiles as $coverageFile) {
             $coverageMerger->addCoverageFromFile($coverageFile);