Genie::provision()

src/Genie.php

@@ -84,6 +84,20 @@ public function construct(string $target, ...$pool): mixed
         return new $target(...$this->resolveArguments($target, ...$pool));
     }
 
+    /**
+     * Inspect the given target and return an iterable list of arguments
+     * usable for invoking/constructing the target (using argument unpacking, the splat operator).
+     * Does not invoke/construct the target.
+     *
+     * @param callable|string $target
+     * @param mixed ...$pool
+     * @return iterable
+     */
+    public function provision(callable|string $target, ...$pool): iterable
+    {
+        return $this->resolveArguments($target, ...$pool);
+    }
+
     /**
      * Provide services without directly exposing them.
      * Returns a fellow invoker with the requested services provisioned.

tests/GenieAttributesShowcaseTest.php

@@ -47,20 +47,15 @@ public function testEverything()
             return func_get_args();
         };
 
-        $g = new Genie($sleeve);
-        $args = [
-            ...$this->with($g, function () use ($toCall) {
-                return $this->resolveArguments(
-                    $toCall,
-                    'not autowired',
-                    null,
-                    'another value',
-                    'these are the remaining arguments',
-                    123,
-                    value: 42,
-                );
-            }),
-        ];
+        $args = (new Genie($sleeve))->provision(
+            $toCall,
+            'not autowired',
+            null,
+            'another value',
+            'these are the remaining arguments',
+            123,
+            value: 42,
+        );
 
         $this->assertInstanceOf(Thing::class, $args[0] ?? null);
         $this->assertSame($sleeve[Thing::class], $args[0] ?? null);