Add User generator that accepts arguments

lib/faker/default/internet.rb

@@ -277,6 +277,14 @@ def uuid
         '%08x-%04x-%04x-%04x-%04x%08x' % ary # rubocop:disable Style/FormatString
       end
 
+      def user(*args)
+        user_hash = {}
+        args.each do |arg|
+          user_hash[:"#{arg}"] = send(arg)
+        end
+        user_hash
+      end
+
       alias user_name username
     end
   end

test/faker/default/test_faker_internet.rb

@@ -295,4 +295,23 @@ def test_uuid
     assert_equal(36, uuid.size)
     assert_match(/\A\h{8}-\h{4}-4\h{3}-\h{4}-\h{12}\z/, uuid)
   end
+
+  def test_user_with_args
+    user = @tester.user('name', 'email', 'password')
+    assert user['name'].match(/[a-z]+((_|\.)[a-z]+)?/)
+    assert user['email'].match(/.+@.+\.\w+/)
+    assert user['password'].match(/\w{3}/)
+  end
+
+  def test_user_without_args
+    user = @tester.user
+    assert user['name'].match(/[a-z]+((_|\.)[a-z]+)?/)
+    assert user['email'].match(/.+@.+\.\w+/)
+  end
+
+  def test_user_with_invalid_args
+    assert_raises NoMethodError do
+      @tester.user('xyz')
+    end
+  end
 end