Merge pull request #1 from EscuelaIt/integer-rule

Create integer rule

Author: midesweb

src/Rules/IntegerRule.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Escuelait\MagnificValidator\Rules;
+
+class IntegerRule implements ValidationRule {
+
+  public function validate(mixed $input) : bool {
+    return filter_var($input, FILTER_VALIDATE_INT) !== false;
+  }
+
+  public function message() : string {
+    return 'The input should be an integer';
+  }
+}

src/Rules/RuleParser.php

@@ -8,6 +8,7 @@ public function parseRules(array $rules) :array {
       return match(true) {
         $rule == 'email' => new EmailRule(),
         $rule == 'url' => new UrlRule(),
+        $rule == 'integer' => new IntegerRule(),
         $rule == 'required' => new RequiredRule(),
         str_starts_with($rule, 'max:') => new MaxRule((int) substr($rule, 4)),
         default => throw new \InvalidArgumentException("Unknown rule: $rule"),

tests/MagnificValidatorTest.php

@@ -18,8 +18,9 @@ public static function validInputProvider() :array {
       ['https://escuela.it', ['url', 'required']],
       ['https://escuela.it/algo', ['url']],
       ['Algo que quiero validar', ['required', 'max:40']],
-      ['80', ['required', 'max:100']],
+      ['80', ['integer', 'required', 'max:100']],
       ['https://escuela.it', ['url', 'required', 'max:200']],
+      [34, ['required', 'integer']],
     ];
   }
 
@@ -39,6 +40,8 @@ public static function invalidInputProvider() :array {
       ['no_es_un_email', ['email', 'required']],
       ['escuela.it', ['url', 'required']],
       ['Algo que quiero validar', ['required', 'max:10']],
+      ['234a', ['required', 'integer']],
+      ['', ['integer']],
       [1, ['required', 'max:0']],
     ];
   }

tests/Rules/IntegerRuleTest.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Escuelait\Tests\MagnificValidator\Rules;
+
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Framework\Attributes\Test;
+use Escuelait\MagnificValidator\Rules\IntegerRule;
+
+class IntegerRuleTest extends TestCase {
+
+  #[Test]
+  public function itValidatesCorrectIntegers() {
+    $integerRule = new IntegerRule();
+    
+    $this->assertTrue($integerRule->validate(123));
+    $this->assertTrue($integerRule->validate('456'));
+    $this->assertTrue($integerRule->validate(0));
+    $this->assertTrue($integerRule->validate(-789));
+  }
+
+  #[Test]
+  public function itValidatesIncorrectIntegers() {
+    $integerRule = new IntegerRule();
+    
+    $this->assertFalse($integerRule->validate(12.34));
+    $this->assertFalse($integerRule->validate('abc'));
+    $this->assertFalse($integerRule->validate('123abc'));
+    $this->assertFalse($integerRule->validate(null));
+  }
+
+  #[Test]
+  public function itReturnsExpectedMessage() {
+    $integerRule = new IntegerRule();
+    $this->assertEquals('The input should be an integer', $integerRule->message());
+  }
+}