Remove trailing dot in username if any

src/Faker/Provider/Internet.php

@@ -93,7 +93,18 @@ public function userName()
         $format = static::randomElement(static::$userNameFormats);
         $username = static::bothify($this->generator->parse($format));
 
-        return strtolower(static::transliterate($username));
+        $username = strtolower(static::transliterate($username));
+
+        // check if transliterate() didn't support the language and removed all letters
+        if (trim($username, '._') === '') {
+            throw new \Exception('userName failed with the selected locale. Try a different locale or activate the "intl" PHP extension.');
+        }
+
+        // clean possible trailing dots from first/last names
+        $username = str_replace('..', '.', $username);
+        $username = rtrim($username, '.');
+
+        return $username;
     }
     /**
      * @example 'fY4èHdZv68'
@@ -120,7 +131,17 @@ public function domainWord()
     {
         $lastName = $this->generator->format('lastName');
 
-        return strtolower(static::transliterate($lastName));
+        $lastName = strtolower(static::transliterate($lastName));
+
+        // check if transliterate() didn't support the language and removed all letters
+        if (trim($lastName, '._') === '') {
+            throw new \Exception('domainWord failed with the selected locale. Try a different locale or activate the "intl" PHP extension.');
+        }
+
+        // clean possible trailing dot from last name
+        $lastName = rtrim($lastName, '.');
+
+        return $lastName;
     }
 
     /**
@@ -214,7 +235,7 @@ protected static function transliterate($string)
         }
 
         $transId = 'Any-Latin; Latin-ASCII; NFD; [:Nonspacing Mark:] Remove; NFC;';
-        if (function_exists('transliterator_transliterate') && $transliterator = \Transliterator::create($transId)) {
+        if (class_exists('Transliterator') && $transliterator = \Transliterator::create($transId)) {
             $transString = $transliterator->transliterate($string);
         } else {
             $transString = static::toAscii($string);

test/Faker/Provider/InternetTest.php

@@ -40,29 +40,65 @@ public function localeDataProvider()
     /**
      * @link http://stackoverflow.com/questions/12026842/how-to-validate-an-email-address-in-php
      *
-     * @requires PHP 5.4
      * @dataProvider localeDataProvider
      */
     public function testEmailIsValid($locale)
     {
+        if ($locale !== 'en_US' && !class_exists('Transliterator')) {
+            $this->markTestSkipped('Transliterator class not available (intl extension)');
+        }
+
         $this->loadLocalProviders($locale);
         $pattern = '/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iD';
         $emailAddress = $this->faker->email();
         $this->assertRegExp($pattern, $emailAddress);
     }
 
     /**
-     * @requires PHP 5.4
      * @dataProvider localeDataProvider
      */
     public function testUsernameIsValid($locale)
     {
+        if ($locale !== 'en_US' && !class_exists('Transliterator')) {
+            $this->markTestSkipped('Transliterator class not available (intl extension)');
+        }
+
         $this->loadLocalProviders($locale);
-        $pattern = '/^[A-Za-z0-9._]+$/';
+        $pattern = '/^[A-Za-z0-9]+([._][A-Za-z0-9]+)*$/';
         $username = $this->faker->username();
         $this->assertRegExp($pattern, $username);
     }
 
+    /**
+     * @dataProvider localeDataProvider
+     */
+    public function testDomainnameIsValid($locale)
+    {
+        if ($locale !== 'en_US' && !class_exists('Transliterator')) {
+            $this->markTestSkipped('Transliterator class not available (intl extension)');
+        }
+
+        $this->loadLocalProviders($locale);
+        $pattern = '/^[a-z]+(\.[a-z]+)+$/';
+        $domainName = $this->faker->domainName();
+        $this->assertRegExp($pattern, $domainName);
+    }
+
+    /**
+     * @dataProvider localeDataProvider
+     */
+    public function testDomainwordIsValid($locale)
+    {
+        if ($locale !== 'en_US' && !class_exists('Transliterator')) {
+            $this->markTestSkipped('Transliterator class not available (intl extension)');
+        }
+
+        $this->loadLocalProviders($locale);
+        $pattern = '/^[a-z]+$/';
+        $domainWord = $this->faker->domainWord();
+        $this->assertRegExp($pattern, $domainWord);
+    }
+
     public function loadLocalProviders($locale)
     {
         $providerPath = realpath(__DIR__ . '/../../../src/Faker/Provider');

test/Faker/Provider/ProviderOverrideTest.php

@@ -77,6 +77,10 @@ public function testDateTime($locale = null)
      */
     public function testInternet($locale = null)
     {
+        if ($locale && $locale !== 'en_US' && !class_exists('Transliterator')) {
+            $this->markTestSkipped('Transliterator class not available (intl extension)');
+        }
+
         $faker = Faker\Factory::create($locale);
 
         $this->assertRegExp(static::TEST_STRING_REGEX, $faker->userName);