[9.x] Add isUlid in Stringable (#45100)

* Add isUlid in `Stringable`

* Add tests

* Update Stringable.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: michaelnabil230

src/Illuminate/Support/Stringable.php

@@ -320,6 +320,16 @@ public function isUuid()
         return Str::isUuid($this->value);
     }
 
+    /**
+     * Determine if a given string is a valid ULID.
+     *
+     * @return bool
+     */
+    public function isUlid()
+    {
+        return Str::isUlid($this->value);
+    }
+
     /**
      * Determine if the given string is empty.
      *

tests/Support/SupportStringableTest.php

@@ -39,6 +39,12 @@ public function testIsUuid()
         $this->assertFalse($this->stringable('2cdc7039-65a6-4ac7-8e5d-d554a98')->isUuid());
     }
 
+    public function testIsUlid()
+    {
+        $this->assertTrue($this->stringable('01GJSNW9MAF792C0XYY8RX6QFT')->isUlid());
+        $this->assertFalse($this->stringable('01GJSNW9MAF-792C0XYY8RX6ssssss-QFT')->isUlid());
+    }
+
     public function testIsJson()
     {
         $this->assertTrue($this->stringable('1')->isJson());