add min length rule and it test

src/LangManager.php

@@ -27,6 +27,7 @@ class LangManager
             'validation.string_rule' => "Le champ :attribute doit être une chaîne de caractères.",
             'validation.required_rule' => "Le champ :attribute est requis.",
             'validation.max_length_rule' => "Le champ :attribute ne doit pas dépasser :max caractères.",
+            'validation.min_length_rule' => "Le champ :attribute doit dépasser :min caractères.",
             'validation.email_rule' => "Le champ :attribute doit être un e-mail."
         ],
         'en' => [
@@ -37,6 +38,7 @@ class LangManager
             'validation.string_rule' => "The :attribute field must be a string.",
             'validation.required_rule' => "The :attribute field is required.",
             'validation.max_length_rule' => "The :attribute field must not exceed :max characters.",
+            'validation.min_length_rule' => "The :attribute field must exceed :min characters.",
             'validation.email_rule' => "The :attribute field must be a email.",
         ],
     ];

src/Rules/MinLengthRule.php

@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * MinLengthRule - A validation rule implementation for checking if a string field does not exceed a mininum length.
+ *
+ * @package BlakvGhost\PHPValidator\Rules
+ * @author Kabirou ALASSANE
+ * @website https://kabirou-alassane.com
+ * @github https://github.com/BlakvGhost
+ */
+
+namespace BlakvGhost\PHPValidator\Rules;
+
+use BlakvGhost\PHPValidator\LangManager;
+
+class MinLengthRule implements RuleInterface
+{
+    /**
+     * Name of the field being validated.
+     *
+     * @var string
+     */
+    protected $field;
+
+    /**
+     * Constructor of the MinLengthRule class.
+     *
+     * @param array $parameters Parameters for the rule, specifying the mininum length.
+     */
+    public function __construct(protected array $parameters)
+    {
+        // No specific logic needed in the constructor for this rule.
+    }
+
+    /**
+     * Check if the length of the given string field does not exceed the specified mininum length.
+     *
+     * @param string $field Name of the field being validated.
+     * @param mixed $value Value of the field being validated.
+     * @param array $data All validation data.
+     * @return bool True if the length is within the specified mininum, false otherwise.
+     */
+    public function passes(string $field, $value, array $data): bool
+    {
+        // Set the field property for use in the message method.
+        $this->field = $field;
+
+        // Get the mininum length from the parameters, defaulting to 0 if not set.
+        $minLength = $this->parameters[0] ?? 0;
+
+        // Check if the value is a string and its length is within the specified mininum.
+        return is_string($value) && mb_strlen($value) >= $minLength;
+    }
+
+    /**
+     * Get the validation error message for the max length rule.
+     *
+     * @return string Validation error message.
+     */
+    public function message(): string
+    {
+        // Use LangManager to get a translated validation error message.
+        return LangManager::getTranslation('validation.min_length_rule', [
+            'attribute' => $this->field,
+            'min' => $this->parameters[0] ?? 0,
+        ]);
+    }
+}

tests/Feature/RuleTest.php

@@ -3,6 +3,7 @@
 use BlakvGhost\PHPValidator\LangManager;
 use BlakvGhost\PHPValidator\Rules\EmailRule;
 use BlakvGhost\PHPValidator\Rules\MaxLengthRule;
+use BlakvGhost\PHPValidator\Rules\MinLengthRule;
 use BlakvGhost\PHPValidator\Rules\RequiredRule;
 use BlakvGhost\PHPValidator\Rules\StringRule;
 
@@ -49,4 +50,15 @@
     expect($validator->message())->toBe(
         LangManager::getTranslation('validation.string_rule', ['attribute' => 'field'])
     );
+});
+
+it('validates min length rule successfully', function () {
+    $validator = new MinLengthRule([10]);
+
+    expect($validator->passes('field', 'toolongvalue', []))->toBeTrue();
+    expect($validator->passes('field', 'less', []))->toBeFalse();
+
+    expect($validator->message())->toBe(
+        LangManager::getTranslation('validation.min_length_rule', ['attribute' => 'field', 'min' => 10])
+    );
 });