我有一个模型
class Survey < ActiveRecord::Base
include Respondable
end
在 DB surveys 表中有下一个字段:
- responses_saved_date
- responses_saved_by_type
- responses_saved_by_id
和模块
module Respondable
extend ActiveSupport::Concern
included do
belongs_to :responses_saved_by, :polymorphic => :true
end
def update_saved_settings!(person=nil)
self.responses_saved_date = Time.now
self.responses_saved_by = person
self.save
end
end
根据这篇博文 https://semaphoreci.com/community/tutorials/testing-mixins-in-isolation-with-minitest-and-rspec,我尝试为 Respondable concern 编写单元测试,以隔离测试它
这是我的 rspec:
describe Respondable do
class DummySurvey < ActiveRecord::Base
include Respondable
end
subject { DummySurvey.new }
it { should belong_to(:responses_saved_by) }
it 'saves the settings with user' do
subject.update_saved_settings!(user)
subject.responses_saved_date.should_not be_nil
subject.responses_saved_by.should eq user
end
it 'saves the settings without user' do
subject.update_saved_settings!
subject.responses_saved_date.should_not be_nil
subject.responses_saved_by.should be_nil
end
end
当我运行测试时,我收到下一个错误:
Failure/Error: subject { DummySurvey.new }
ActiveRecord::StatementInvalid:
PG::UndefinedTable: ERROR: relation "dummy_survey" does not exist
LINE 5: WHERE a.attrelid = '"dummy_survey"'...
^
: SELECT a.attname, format_type(a.atttypid, a.atttypmod),
pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
FROM pg_attribute a LEFT JOIN pg_attrdef d
ON a.attrelid = d.adrelid AND a.attnum = d.adnum
WHERE a.attrelid = '"dummy_survey"'::regclass
AND a.attnum > 0 AND NOT a.attisdropped
ORDER BY a.attnum
最佳答案
我觉得如果你写
class DummySurvey < Survey
代替
class DummySurvey < ActiveRecord::Base
你应该是金色的。当您定义一个继承自 ActiveRecord::Base
的类时,期望您的数据库具有正确的表和列(通过迁移设置,并由 Rails 命名约定确定)。
Rails 应在测试运行后重置测试数据库,因此使用与实际应用相同的模型类是可行的。
关于ruby-on-rails - 关注包含的测试 belongs_to,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40177589/