fix: cnpj validation and phpunit tests

src/Rules/Cnpj.php

@@ -32,19 +32,11 @@ public function __construct($allowMask = true)
 
     public function passes($attribute, $value): bool
     {
-        if (empty($value)) {
-            return true;
-        }
-
         if ($this->allowMask) {
             $value = preg_replace('/\D/', '', $value);
         }
 
-        if (!($value && mb_strlen($value) === 14)) {
-            return false;
-        }
-
-        if (in_array($value, $this->invalidCnpjs)) {
+        if (empty($value) || mb_strlen($value) !== 14 || in_array($value, $this->invalidCnpjs)) {
             return false;
         }
 

tests/CnpjTest.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace Melhorenvio\ValidationRules\Tests;
+
+use Melhorenvio\ValidationRules\Rules\Cnpj;
+use PHPUnit\Framework\TestCase;
+
+class CnpjTest extends TestCase
+{
+    /**
+     * @test
+     * @dataProvider provideInvalidCnpjs
+     */
+    public function test_with_invalid_cnpjs(string $cnpj)
+    {
+        $rule = new Cnpj();
+
+        $this->assertFalse($rule->passes('cnpj', $cnpj));
+    }
+
+    /**
+     * @test
+     * @dataProvider provideValidCnpjs
+     */
+    public function test_with_valid_cnpjs(string $cnpj)
+    {
+        $rule = new Cnpj();
+
+        $this->assertTrue($rule->passes('cnpj', $cnpj));
+    }
+
+    public function test_with_empty_cnpj()
+    {
+        $rule = new Cnpj();
+
+        $this->assertFalse($rule->passes('cnpj', ''));
+        $this->assertFalse($rule->passes('cnpj', null));
+    }
+
+    public function test_with_zeroed_cnpj()
+    {
+        $rule = new Cnpj();
+
+        $this->assertFalse($rule->passes('cnpj', '0'));
+        $this->assertFalse($rule->passes('cnpj', 0));
+    }
+
+    public static function provideInvalidCnpjs(): array
+    {
+        return [
+            ['00000000000000'],
+            ['11111111111111'],
+            ['22222222222222'],
+            ['33333333333333'],
+            ['44444444444444'],
+            ['55555555555555'],
+            ['66666666666666'],
+            ['77777777777777'],
+            ['88888888888888'],
+            ['99999999999999'],
+            ['00.000.000/0000-00'],
+            ['11.111.111/1111-11'],
+            ['22.222.222/2222-22'],
+            ['33.333.333/3333-33'],
+            ['44.444.444/4444-44'],
+            ['55.555.555/5555-55'],
+            ['66.666.666/6666-66'],
+            ['77.777.777/7777-77'],
+            ['88.888.888/8888-88'],
+            ['99.999.999/9999-99'],
+        ];
+    }
+
+    public static function provideValidCnpjs(): array
+    {
+        return [
+            ['05.495.723/0001-22'],
+            ['04.307.064/0001-90'],
+            ['25.394.311/0001-03'],
+            ['05495723000122'],
+            ['04307064000190'],
+            ['25394311000103'],
+        ];
+    }
+}

tests/CpfTest.php

@@ -67,7 +67,7 @@ public static function provideInvalidCpfs(): array
             ['666.666.666-66'],
             ['777.777.777-77'],
             ['888.888.888-88'],
-            ['999.999.999-99']
+            ['999.999.999-99'],
         ];
     }