如何编写活动记录范围的测试？

Question

如何为活动记录范围编写测试？例如

class Post < ActiveRecord::Base 
    scope :recent, -> { order("posts.created_at DESC") } 
    scope :published, -> { where("status = 1") } 
end 

我使用RSpec测试，

RSpec.feature Post, :type => :model do 
    let(:post) { build(:post) } 

    describe 'test scopes' do 
    end 
end 

Answer 1

假设你有合适的灯具的设置，我通常会运行一个查询，我期望范围的结果，一个地方我不“T。例如：

describe '#published' do 
    it "returns a published post" do 
    expect(Post.published.count).to be(1) 
    # or inspect to see if it's published, but that's a bit redundant 
    end 

    it "does not return unpublished posts" do 
    expect(Post.published).to_not include(Post.where("status = 0")) 
    end 
end