This can only happen when running this library's own test suite

Author: sebastianbergmann

src/Report/Xml/Facade.php

@@ -10,7 +10,6 @@
 namespace SebastianBergmann\CodeCoverage\Report\Xml;
 
 use const DIRECTORY_SEPARATOR;
-use function assert;
 use function count;
 use function dirname;
 use function file_get_contents;
@@ -94,11 +93,13 @@ private function setBuildInformation(CodeCoverage $coverage): void
         } elseif ($coverage->driverIsXdebug()) {
             $driverExtensionName    = 'xdebug';
             $driverExtensionVersion = phpversion('xdebug');
+        } else {
+            // @codeCoverageIgnoreStart
+            $driverExtensionName    = 'unknown';
+            $driverExtensionVersion = 'unknown';
+            // @codeCoverageIgnoreEnd
         }
 
-        assert(isset($driverExtensionName));
-        assert(isset($driverExtensionVersion));
-
         $this->project->buildInformation(
             new Runtime,
             new DateTimeImmutable,