[英]Trouble testing controller using rspec and stubs
我很难通过before_filters,异常以及一些模拟和存根来测试我的控制器。 这是控制器:
before_filter :get_subject, :only => [:show, :edit, :update, :destroy, :update_field]
before_filter :user_has_to_belongs_to_subject_company, :only => [:show, :edit, :update, :destroy, :update_field]
def show
@messages = @subject.get_user_messages(current_user)
end
private
def get_subject
@subject = Subject.find(params[:id])
end
def user_has_to_belongs_to_subject_company
unless @current_user.company.eql?(@subject.company)
raise "Error: current_user does not belongs to subject's company"
end
end
这是我的规格文件:
require 'spec_helper'
describe SubjectsController do
describe "for signed users" do
before(:each) do
@current_user = Factory(:user)
sign_in @current_user
end
describe "for user belonging to subject's company" do
before(:each) do
@subject = mock_model(Subject)
Subject.stub!(:find).with(@subject).and_return(@subject)
@current_user.stub_chain(:company, :eql?).and_return(true)
@subject.stub!(:company)
end
it "should not raise an exception" do
expect { get :show, :id => @subject }.to_not raise_error
end
end
describe "for user not belonging to subject's company" do
before(:each) do
@subject = mock_model(Subject)
Subject.stub!(:find).with(@subject).and_return(@subject)
@current_user.stub_chain(:company, :eql?).and_return(false)
@subject.stub!(:company)
end
it "should raise an exception" do
expect { get :show, :id => @subject }.to raise_error
end
end
end
end
最后,这是错误消息:
SubjectsController for signed users for user belonging to subject's company should not raise an exception
Failure/Error: expect { get :show, :id => @subject }.to_not raise_error
expected no Exception, got #<RuntimeError: Error: current_user does not belongs to subject's company>
# ./spec/controllers/subjects_controller_spec.rb:19:in `block (4 levels) in <top (required)>'
感谢帮助!
我没有看到问题,但这是一个重构建议。 如果您发现自己通常使用更多的模拟和存根,也许是时候重新考虑您的界面了。 在这种情况下,可以使控制器更纤细,模型更胖。
# subjects_controller_spec.rb
describe "for user belonging to subject's company" do
before(:each) do
@subject = mock_model(Subject, :verify_user => true)
Subject.stub!(:find).with(@subject).and_return(@subject)
end
# subjects_controller.b
def user_has_to_belongs_to_subject_company
@subject.verify_user(@current_user)
end
# subject.rb
class Subject
def verify_user(user)
unless user.company.eql?(company)
raise "Error: current_user does not belongs to subject's company"
end
如果您删除了@current_user前面的@,会发生什么情况
def user_has_to_belongs_to_subject_company
unless @current_user.company.eql?(@subject.company)
要得到
def user_has_to_belongs_to_subject_company
unless current_user.company.eql?(@subject.company)
在您的规范中,执行controller.stub!(:current_user).and_return @current_user
我认为问题是范围之一-测试中的@current_user与控制器中的@current_user不同。 确实取决于“ sign_in @current_user”的实现方式。
另外,不是引发异常,也许您的before_filter可以将用户重定向到另一页并设置flash [:error]? before过滤器是处理这种情况的正确位置,因此它不应引发必须在其他地方进行挽救的异常(否则,它将向用户显示500页)。
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