Fix return value email validator

add tests for email validator

library/Respect/Validation/Rules/Email.php

@@ -11,6 +11,6 @@ class Email extends AbstractRule
            return false;
        }
 
-        return filter_var($input, FILTER_VALIDATE_EMAIL);
+        return (bool) filter_var($input, FILTER_VALIDATE_EMAIL);
     }
 }

tests/library/Respect/Validation/Rules/EmailTest.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Respect\Validation\Rules;
+
+class EmailTest extends \PHPUnit_Framework_TestCase
+{
+
+    /**
+     * @dataProvider providerForValidEmail
+     */
+    public function testEmailValid($validEmail)
+    {
+        $validator = new Email();
+        $this->assertTrue($validator->validate($validEmail));
+    }
+
+    /**
+     * @dataProvider providerForInvalidEmail
+     * @expectedException Respect\Validation\Exceptions\EmailException
+     */
+    public function testEmailInvalid($invalidEmail)
+    {
+        $validator = new Email();
+        $this->assertFalse($validator->validate($invalidEmail));
+        $this->assertFalse($validator->assert($invalidEmail));
+    }
+
+    public function providerForValidEmail()
+    {
+        return array(
+            array('test@test.com'),
+            array('mail+mail@gmail.com'),
+            array('mail.email@e.test.com'),
+            array('a@a.a')
+        );
+    }
+
+    public function providerForInvalidEmail()
+    {
+        return array(
+            array('test@test'),
+            array('test'),
+            array('test@тест.рф'),
+            array('@test.com'),
+            array('mail@test@test.com'),
+            array('test.test@'),
+            array('test.@test.com'),
+            array('test@.test.com'),
+            array('test@test..com'),
+            array('test@test.com.'),
+            array('.test@test.com')
+        );
+    }
+
+}