Add support for trait testing

Author: paulbalandan

tests/AutoReview/PhpFilesProvider.php

@@ -78,7 +78,7 @@ private static function getSourceClasses(): array
                 $file->getBasename('.php'),
             );
 
-            if (! class_exists($sourceClass)) {
+            if (! class_exists($sourceClass) && ! trait_exists($sourceClass)) {
                 continue;
             }
 

tests/AutoReview/TestCodeTest.php

@@ -24,6 +24,7 @@
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\CoversFunction;
 use PHPUnit\Framework\Attributes\CoversNothing;
+use PHPUnit\Framework\Attributes\CoversTrait;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\TestCase;
@@ -271,9 +272,10 @@ public function testEachTestClassHasCorrectCovers(string $class): void
         }
 
         $functions = $rc->getAttributes(CoversFunction::class);
+        $traits = $rc->getAttributes(CoversTrait::class);
         $classes = $rc->getAttributes(CoversClass::class);
 
-        if ([] !== $functions && [] === $classes) {
+        if (([] !== $functions || [] !== $traits) && [] === $classes) {
             $this->expectNotToPerformAssertions();
 
             return;