Set reserved_domains.password to NOT NULL

db/migrate/20190102144032_change_reserved_domains_password_to_not_null.rb

@@ -0,0 +1,5 @@
+class ChangeReservedDomainsPasswordToNotNull < ActiveRecord::Migration
+  def change
+    change_column_null :reserved_domains, :password, false
+  end
+end

db/structure.sql

@@ -2241,7 +2241,7 @@ CREATE TABLE public.reserved_domains (
     updator_str character varying,
     legacy_id integer,
     name character varying,
-    password character varying
+    password character varying NOT NULL
 );
 
 
@@ -4864,3 +4864,5 @@ INSERT INTO schema_migrations (version) VALUES ('20181002090319');
 
 INSERT INTO schema_migrations (version) VALUES ('20181108154921');
 
+INSERT INTO schema_migrations (version) VALUES ('20190102144032');
+

test/fixtures/reserved_domains.yml

@@ -0,0 +1,3 @@
+one:
+  name: reserved.test
+  password: reserved-001

test/models/reserved_domain_test.rb

@@ -0,0 +1,11 @@
+require 'test_helper'
+
+class ReservedDomainTest < ActiveSupport::TestCase
+  setup do
+    @reserved_domain = reserved_domains(:one)
+  end
+
+  def test_fixture_is_valid
+    assert @reserved_domain.valid?
+  end
+end