From 218e82d116ba5ef6b645d079154b0f2afad88447 Mon Sep 17 00:00:00 2001
From: Alexey Kopytko <alexey@kopytko.com>
Date: Mon, 1 Mar 2021 19:34:09 +0900
Subject: [PATCH] ProxyTrace should check for tests locations

Fixes #1480
---
 src/TestFramework/Coverage/ProxyTrace.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/TestFramework/Coverage/ProxyTrace.php b/src/TestFramework/Coverage/ProxyTrace.php
index c1597df0b..0a60b8d63 100644
--- a/src/TestFramework/Coverage/ProxyTrace.php
+++ b/src/TestFramework/Coverage/ProxyTrace.php
@@ -108,6 +108,10 @@ public function getTests(): ?TestLocations
 
     public function getAllTestsForMutation(NodeLineRangeData $lineRange, bool $isOnFunctionSignature): iterable
     {
+        if ($this->lazyTestLocations === null) {
+            return [];
+        }
+
         return $this->getTestLocator()->getAllTestsForMutation($lineRange, $isOnFunctionSignature);
     }