Apply contribution guidelines to "AlwaysInvalid" rule

Co-Authored-By: Henrique Moody <henriquemoody@gmail.com>

docs/AlwaysInvalid.md

@@ -2,7 +2,7 @@
 
 - `AlwaysInvalid()`
 
-Always return false.
+Validates any input as invalid.
 
 ```php
 v::alwaysInvalid()->validate($whatever); // false

library/Exceptions/AlwaysInvalidException.php

@@ -13,10 +13,18 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Exceptions;
 
-class AlwaysInvalidException extends ValidationException
+/**
+ * @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author William Espindola <oi@williamespindola.com.br>
+ */
+final class AlwaysInvalidException extends ValidationException
 {
     public const SIMPLE = 'simple';
 
+    /**
+     * {@inheritdoc}
+     */
     public static $defaultTemplates = [
         self::MODE_DEFAULT => [
             self::STANDARD => '{{name}} is always invalid',

library/Rules/AlwaysInvalid.php

@@ -13,8 +13,18 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
-class AlwaysInvalid extends AbstractRule
+/**
+ * Validates any input as invalid.
+ *
+ * @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author William Espindola <oi@williamespindola.com.br>
+ */
+final class AlwaysInvalid extends AbstractRule
 {
+    /**
+     * {@inheritdoc}
+     */
     public function validate($input): bool
     {
         return false;

tests/integration/rules/alwaysInvalid.phpt

@@ -0,0 +1,23 @@
+--FILE--
+<?php
+require 'vendor/autoload.php';
+
+use Respect\Validation\Exceptions\AlwaysInvalidException;
+use Respect\Validation\Exceptions\NestedValidationException;
+use Respect\Validation\Validator as v;
+
+try {
+    v::alwaysInvalid()->check('whatever');
+} catch (AlwaysInvalidException $exception) {
+    echo $exception->getMessage().PHP_EOL;
+}
+
+try {
+    v::alwaysInvalid()->assert('');
+} catch (NestedValidationException $exception) {
+    echo $exception->getFullMessage().PHP_EOL;
+}
+?>
+--EXPECTF--
+"whatever" is always invalid
+- "" is always invalid

tests/integration/rules/alwaysInvalid_1.phpt

@@ -1,17 +0,0 @@
---TEST--
-alwaysInvalid()
---FILE--
-<?php
-require 'vendor/autoload.php';
-
-use Respect\Validation\Exceptions\AlwaysInvalidException;
-use Respect\Validation\Validator;
-
-try {
-    Validator::alwaysInvalid()->check('whatever');
-} catch (AlwaysInvalidException $e) {
-    echo $e->getMessage();
-}
-?>
---EXPECTF--
-"whatever" is always invalid

tests/integration/rules/alwaysInvalid_2.phpt

@@ -1,17 +0,0 @@
---TEST--
-alwaysInvalid()
---FILE--
-<?php
-require 'vendor/autoload.php';
-
-use Respect\Validation\Exceptions\AllOfException;
-use Respect\Validation\Validator;
-
-try {
-    Validator::alwaysInvalid()->assert('');
-} catch (AllOfException $e) {
-    echo $e->getFullMessage();
-}
-?>
---EXPECTF--
-- "" is always invalid

tests/unit/Rules/AlwaysInvalidTest.php

@@ -16,12 +16,18 @@ namespace Respect\Validation\Rules;
 use PHPUnit\Framework\TestCase;
 
 /**
- * @group  rule
+ * @group rule
+ *
  * @covers \Respect\Validation\Rules\AlwaysInvalid
+ *
+ * @author Andreas Wolf <dev@a-w.io>
+ * @author Gabriel Caruso <carusogabriel34@gmail.com>
+ * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author William Espindola <oi@williamespindola.com.br>
  */
-class AlwaysInvalidTest extends TestCase
+final class AlwaysInvalidTest extends TestCase
 {
-    public function providerForValidAlwaysInvalid()
+    public function providerForInvalidInput(): array
     {
         return [
             [0],
@@ -37,9 +43,11 @@ class AlwaysInvalidTest extends TestCase
     }
 
     /**
-     * @dataProvider providerForValidAlwaysInvalid
+     * @test
+     *
+     * @dataProvider providerForInvalidInput
      */
-    public function testShouldValidateInputWhenItIsAValidAlwaysInvalid($input): void
+    public function itShouldValidateInputWhenItIsAValidAlwaysInvalid($input): void
     {
         $rule = new AlwaysInvalid();