fix(enums): make Enum rule accept pure enums when passing enum instance (#45121)

Author: trckster

src/Illuminate/Validation/Rules/Enum.php

@@ -34,14 +34,14 @@ public function __construct($type)
      */
     public function passes($attribute, $value)
     {
-        if (is_null($value) || ! function_exists('enum_exists') || ! enum_exists($this->type) || ! method_exists($this->type, 'tryFrom')) {
-            return false;
-        }
-
         if ($value instanceof $this->type) {
             return true;
         }
 
+        if (is_null($value) || ! function_exists('enum_exists') || ! enum_exists($this->type) || ! method_exists($this->type, 'tryFrom')) {
+            return false;
+        }
+
         try {
             return ! is_null($this->type::tryFrom($value));
         } catch (TypeError $e) {

tests/Validation/ValidationEnumRuleTest.php

@@ -52,6 +52,21 @@ public function testvalidationPassesWhenPassingInstanceOfEnum()
         $this->assertFalse($v->fails());
     }
 
+    public function testvalidationPassesWhenPassingInstanceOfPureEnum()
+    {
+        $v = new Validator(
+            resolve('translator'),
+            [
+                'status' => PureEnum::one,
+            ],
+            [
+                'status' => new Enum(PureEnum::class),
+            ]
+        );
+
+        $this->assertFalse($v->fails());
+    }
+
     public function testValidationFailsWhenProvidingNoExistingCases()
     {
         $v = new Validator(