Add input Email::class widget. (#234)

src/Input/Email.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PHPForge\Html\Input;
+
+use PHPForge\Html\Attribute;
+
+/**
+ * The input element with a type attribute whose value is "email" represents a control for editing a list of e-mail
+ * addresses given in the element’s value.
+ *
+ * @link https://www.w3.org/TR/2012/WD-html-markup-20120329/input.email.html#input.email
+ */
+final class Email extends Base\AbstractInput implements
+    Contract\LengthInterface,
+    Contract\PatternInterface,
+    Contract\PlaceholderInterface,
+    Contract\RequiredInterface
+{
+    use Attribute\Custom\HasWidgetValidation;
+    use Attribute\Input\CanBeMultiple;
+    use Attribute\Input\CanBeRequired;
+    use Attribute\Input\HasMaxLength;
+    use Attribute\Input\HasMinLength;
+    use Attribute\Input\HasPattern;
+    use Attribute\Input\HasPlaceholder;
+    use Attribute\Input\HasSize;
+
+    protected function run(): string
+    {
+        $this->validateString($this->getValue());
+
+        return $this->buildInputTag($this->attributes, 'email');
+    }
+}

tests/Input/Email/ExceptionTest.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PHPForge\Html\Tests\Input\Email;
+
+use InvalidArgumentException;
+use PHPForge\Html\Input\Email;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @psalm-suppress PropertyNotSetInConstructor
+ */
+final class ExceptionTest extends TestCase
+{
+    public function testValue(): void
+    {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('Email::class widget must be a string or null value.');
+
+        Email::widget()->value(1)->render();
+    }
+}