Email Class for DataType and its tests added

src/DataType/Email.php

@@ -0,0 +1,56 @@
+<?php
+declare(strict_types=1);
+
+namespace Selami\Entity\DataType;
+
+use Selami\Entity\Interfaces\DataTypeInterface;
+use InvalidArgumentException;
+
+class Email extends DataTypeAbstract implements DataTypeInterface
+{
+    const DATA_FORMAT_ERROR   = 'Assertion failed for value "%s" for "%s" : INVALID_MAIL_ADDRESS_FORMAT';
+
+    protected static $defaults = [
+        'default'   => ''
+    ];
+
+
+    /**
+     * Email constructor.
+     * @param string $key
+     * @param mixed $datum
+     * @param array $options
+     * @throws validArgumentException
+     */
+    public function __construct(string $key, $datum, array $options = [])
+    {
+        $this->key = $key;
+        $this->datum = $datum;
+        $this->checkValidOptions($options);
+        $this->options = array_merge(self::$defaults, $options);
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function assert()
+    {
+        if (filter_var($this->datum, FILTER_VALIDATE_EMAIL) === false) {
+            $this->errorMessageTemplate = self::DATA_FORMAT_ERROR;
+            $this->throwException();
+        }
+        return true;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function normalize()
+    {
+        try {
+            $this->assert();
+            return $this->datum;
+        } catch (InvalidArgumentException $e) {
+            return $this->options['default'];
+        }
+    }
+}

tests/DataType/EmailTest.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+namespace tests;
+
+use Selami\Test\Abstracts\DataType;
+
+class MyEmailClass extends DataType
+{
+
+    public function setUp()
+    {
+        $this->className    = '\\Selami\\Entity\\DataType\\Email';
+        $this->validValue   = 'mehmet@mkorkmaz.com';
+        $this->key          = 'email';
+        $this->options      = [];
+    }
+
+    public function trueProvider()
+    {
+        return [
+            ['m@k.co'],
+            ['mehmet.korkmaz@reformo.net'],
+            ['mehmet+korkmaz@reformo.net']
+        ];
+    }
+
+    public function exceptionProvider()
+    {
+        return [
+            ['mehmet@korkmaz@reformo.net'], // no two @ char
+            ['mehmet @mkorkmaz.com'], // no whitespace
+            ['m@k.co,m@k.com'], // no comma char
+            ['m@k.co;m@k.com'], // no colon char
+            ['.m@k.co'], // no period at the first char
+            ['m\k@k.co'], // backslash is invalid
+            ['m+k.co'], // there must be at least one @ char
+            ['email123456789012345678901234567890123456789012345678901234567890@k.co'] // max 64 char before @
+        ];
+    }
+
+    public function defaultsProvider()
+    {
+        return [
+            ['mehmet,@mkorkmaz.com', 'mehmet@mkorkmaz.com', ['default' => 'mehmet@mkorkmaz.com']],
+            ['m@k.co;m@k.com', null, ['default' => null]]
+        ];
+    }
+}