feat: Add references method for two-way test-source linking

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 array<int|string, class-string|array<class-string|string>>
+     */
+    public array $references;
+
     /**
      * Creates a new Pending Call.
      */
@@ -615,6 +622,20 @@ public function coversNothing(): self
         return $this;
     }
 
+    /**
+     * Adds a reference to the tested method or class. This helps to link test
+     * cases to the source code for easier navigation.
+     *
+     * @param  array<class-string|string>|class-string  ...$classes
+     */
+    public function references(string|array ...$classes): self
+    {
+        // For rector
+        $this->references = $classes;
+
+        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