Fixed a bug when working with text values like function names

Author: andrey-helldar

src/Concerns/Call.php

@@ -10,12 +10,12 @@ trait Call
 
     protected function call(mixed $callback = null): mixed
     {
-        return $this->isCallable($callback) ? $callback() : $callback;
+        return $this->isCallable($callback) && ! $this->isFunction($callback) ? $callback() : $callback;
     }
 
     protected function makeCallable($value): callable
     {
-        if ($this->isCallable($value)) {
+        if ($this->isCallable($value) && ! $this->isFunction($value)) {
             return $value;
         }
 
@@ -28,4 +28,9 @@ protected function isCallable($value): bool
     {
         return is_callable($value);
     }
+
+    protected function isFunction($value): bool
+    {
+        return is_string($value) && function_exists($value);
+    }
 }

tests/TestCase.php

@@ -28,9 +28,9 @@ abstract class TestCase extends BaseTestCase
 
     protected array $keys = ['Foo', 'Bar', 'Baz'];
 
-    protected mixed $value = 'Foo';
+    protected mixed $value = 'value';
 
-    protected string $value_second = 'Bar';
+    protected string $value_second = 'Foo';
 
     protected function getPackageProviders($app): array
     {