Add reference method

src/PendingCalls/TestCall.php

@@ -48,6 +48,13 @@ final class TestCall
      */
     private readonly bool $descriptionLess;
 
+    /**
+     * This property is not actually used in the codebase, it's only here to make Rector happy.
+     *
+     * @var string|array<class-string|string>
+     */
+    public array|string $references;
+
     /**
      * Creates a new Pending Call.
      */
@@ -615,6 +622,21 @@ final class TestCall
         return $this;
     }
 
+    /**
+     * Adds a reference to the tested method or class.
+     * This helps to link test cases to the source code
+     * for easier navigation during development.
+     *
+     * @param  string|array<class-string|string>  $classes
+     */
+    public function reference(string|array ...$classes): self
+    {
+        // For rector
+        $this->references = $classes; // @phpstan-ignore-line
+
+        return $this;
+    }
+
     /**
      * Informs the test runner that no expectations happen in this test,
      * and its purpose is simply to check whether the given code can