Ruby on rails rake测试-无法识别self.table_名称

我有一个奇怪的错误。当我尝试运行单元测试时，会出现以下错误：

test_the_truth(UpdateMainTest):
 ActiveRecord::StatementInvalid: Could not find table 'blacklists'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/sqlite_adapter.rb:472:in `table_structure'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/sqlite_adapter.rb:346:in `columns'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:660:in `column_names'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:652:in `timestamp_column_names'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:585:in `block in table_rows'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:579:in `each'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:579:in `map'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:579:in `table_rows'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:494:in `block (3 levels) in create_fixtures'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:492:in `each'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:492:in `block (2 levels) in create_fixtures'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:491:in `block in create_fixtures'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract_adapter.rb:168:in `disable_referential_integrity'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:476:in `create_fixtures'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:895:in `load_fixtures'
/var/lib/gems/1.9.1/gems/activerecord-3.2.13/lib/active_record/fixtures.rb:849:in `setup_fixtures'
/var/lib/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:407:in `_run__379848442555604621__setup__3487204981098397389__callbacks'
/var/lib/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:405:in `__run_callback'
/var/lib/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:385:in `_run_setup_callbacks'
/var/lib/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/lib/gems/1.9.1/gems/activesupport-3.2.13/lib/active_support/testing/setup_and_teardown.rb:35:in `run'

这是我的黑名单模型：

class Blacklist < ActiveRecord::Base
  attr_accessible :abbreviation, :name
  self.table_name = "blacklist"
  validates :abbreviation, :presence => :true, :uniqueness => :true
  validates :name, :presence => :true
end

我多次运行rakedb:test:prepare，但错误仍然存在。 当我使用rails控制台时，我可以毫无错误地创建黑名单对象。

---

你知道我能做什么吗

使用复数形式的符号，表名应为复数：

self.table_name = :blacklists

使用复数形式创建表名：

create_table "blacklists", :force => true do |t|
    t.string   "name"
    t.string   "abbreviation"
    t.datetime "created_at",   :null => false
    t.datetime "updated_at",   :null => false
  end

---

如果只发生在单元测试中，那么测试数据库可能已经过时。您应该尝试重建它

rake db:migrate db:test:clone

谢谢您的帮助

我无法真正找到问题的根源，但当我

---

注释掉test_helper.rb中加载所有装置的行，错误不再出现。

感谢您的回答，但我特别指定self.table_名称不必使用名称“黑名单”。如果有一个函数以非标准方式命名表，它是否应该能够正常工作？请使用self.class.table\u name。这可能有用。并在attr_accessible上使用它。尝试了这两种方法。self.class.table_name给出了方法table_name在class:class中不可用的错误，并且将其放在attr_accessible之前也不会进行更改。

create_table "blacklists", :force => true do |t|
    t.string   "name"
    t.string   "abbreviation"
    t.datetime "created_at",   :null => false
    t.datetime "updated_at",   :null => false
  end