Fix lastName should generate random gender

Author: aanfarhan

src/Faker/Provider/ru_RU/Person.php

@@ -105,6 +105,8 @@ class Person extends \Faker\Provider\Person
         'Меркушев', 'Лыткин', 'Туров',
     );
 
+    protected static $lastNameSuffix = array('a', '');
+
     /**
      * Return male middle name
      *
@@ -166,11 +168,13 @@ public function middleName($gender = null)
     public function lastName($gender = null)
     {
         $lastName = static::randomElement(static::$lastName);
-        
+
         if (static::GENDER_FEMALE === $gender) {
             return $lastName . 'a';
+        } elseif (static::GENDER_MALE === $gender) {
+            return $lastName;
         }
-        
-        return $lastName;
+
+        return $lastName . static::randomElement(static::$lastNameSuffix);
     }
 }

test/Faker/Provider/ru_RU/PersonTest.php

@@ -27,6 +27,6 @@ public function testLastNameFemale()
 
     public function testLastNameMale()
     {
-        $this->assertNotEquals("a", substr($this->faker->lastName(), -1));
+        $this->assertNotEquals("a", substr($this->faker->lastName('male'), -1));
     }
 }