update

Author: mevdschee

example.php

@@ -12,7 +12,7 @@
 
 // create a form object
 $form = E::form([
-    E::field(E::text('username')->required(), E::label('Username')),
+    E::field(E::text('username')->required(), E::label('Username'), [V::minLength(1)]),
     E::field(E::password('password'), E::label('Password')),
     E::field(E::submit('Login')),
 ]);

src/Validator/MinLength.php

@@ -23,7 +23,7 @@ public function message(string $message): self
 
     public function evaluate(string $value): bool
     {
-        return mb_strlen($value) <= $this->minLength;
+        return mb_strlen($value) >= $this->minLength;
     }
 
     public function validate(string $value): string

tests/Validators/EmailValidatorTest.php

@@ -19,7 +19,9 @@ public static function addressDataProvider(): array
         ];
     }
 
-    #[DataProvider('addressDataProvider')]
+    /**
+     * @dataProvider addressDataProvider
+     */
     public function testValidEmail(string $address, bool $expected): void
     {
         $validator = Validators::email('invalid email');

tests/Validators/MinLengthValidatorTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace MintyPHP\Tests\Validators;
+
+use MintyPHP\Form\Validator\Validators;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+
+class MinLengthValidatorTest extends TestCase
+{
+    public static function minLengthDataProvider(): array
+    {
+        return [
+            ['', 0, true],
+            ['', 1, false],
+            ['1', 0, true],
+            ['1', 1, true],
+            ['1', 2, false],
+            ['12', 1, true],
+            ['12', 2, true],
+            ['12', 3, false],
+            ['123   78', 7, true],
+            ['123   78', 8, true],
+            ['123   78', 9, false],
+            ['12345   ', 7, true],
+            ['12345   ', 8, true],
+            ['12345   ', 9, false],
+            ['   45678', 7, true],
+            ['   45678', 8, true],
+            ['   45678', 9, false],
+        ];
+    }
+
+    #[DataProvider('minLengthDataProvider')]
+    public function testValidExpression(string $input, int $length, bool $expected): void
+    {
+        $validator = Validators::minLength($length, 'invalid length');
+        $this->assertEquals($validator->validate($input) === '', $expected);
+    }
+}