Merge pull request #10 from asterion/main

fix: generate correct RUT

src/Provider/es_CL/Person.php

@@ -46,14 +46,38 @@ public function rut(int $length = 8): string
         for($i = 0; $i < $length; $i++) {
             $rut .= mt_rand(0, 9);
         }
-
-        $dv = 11 - ($rut % 11);
-        if ($dv == 10) {
-            $dv = 'K';
-        } elseif ($dv == 11) {
-            $dv = 0;
-        }
+
+        $dv = self::getVd((int)$rut);
 
         return "{$rut}-{$dv}";
     }
+
+    /**
+     * Returns the Verification Digit from a RUT number.
+     * https://github.com/Laragear/Rut/blob/a4f6812a889c67115a6c7f2d7e0782ec4807061f/src/Rut.php#L446
+     *
+     * @param  int  $num
+     * @return string
+     */
+    public static function getVd(int $num): string
+    {
+        $i = 2;
+        $sum = 0;
+
+        foreach (array_reverse(str_split((string) $num)) as $v) {
+            if ($i === 8) {
+                $i = 2;
+            }
+            $sum += (int) $v * $i;
+            $i++;
+        }
+
+        $digit = 11 - ($sum % 11);
+
+        return (string) match ($digit) {
+            11 => 0,
+            10 => 'K',
+            default => $digit,
+        };
+    }
 }

tests/ExampleTest.php

@@ -1,5 +1,31 @@
 <?php
 
+$faker = \Faker\Factory::create('es_CL');
+
 it('can test', function () {
     expect(true)->toBeTrue();
 });
+
+it('can generate', function () use ($faker) {
+    $rut = $faker->rut();
+
+    expect(preg_match('/[\dkK-]/', $faker->rut()))->toBe(1);
+});
+
+it('can return vd number', function () {
+
+    $dv = \Faker\Provider\es_CL\Person::getVd(99737415);
+
+    expect($dv)->toBe('0');
+
+    $dv = \Faker\Provider\es_CL\Person::getVd(22339845);
+
+    expect($dv)->toBe('6');
+});
+
+it('can return vd k', function () {
+
+    $dv = \Faker\Provider\es_CL\Person::getVd(77789188);
+
+    expect($dv)->toBe('K');
+});