我有两个规格。它们都测试来自公共前（：all）块的数据。如果我同时运行，第二个失败。
在一些日志记录中，似乎第1周被添加到@h_1两次 - 但这是在哪里发生的？
它似乎在第一个阻止的某个地方。如果我注释掉第一个，第二个就过去了。我不明白的是，语法在哪里说两次将@ w_1添加到@h_1两次？
require 'data_mapper'
DataMapper::setup(:default, "sqlite3://#{Dir.pwd}../data/prod.db")
class Hobby
include DataMapper::Resource
property :id, String, :key => true
has n, :weeks, :through => Resource
end
class Week
include DataMapper::Resource
property :id, Integer, :key => true
has n, :hobbys, :through => Resource
end
DataMapper.finalize.auto_migrate!
describe "Hobby" do
before(:all){
@h_1 = Hobby.create(:id => "zombies")
@w_1 = Week.create(:id => 1)
@w_2 = Week.create(:id => 2)
@h_1.weeks << @w_1
@h_1.weeks << @w_2
@h_1.save
}
context "when a week is added to hobby" do
subject { @h_1.weeks[0] }
it "should be stored in the 'weeks' property of the hobby" do
should eql @w_1 #if I comment out this the spec below will pass
end
end
context "when another week is added to hobby" do
it "hobby should have two weeks" do
@h_1.weeks.length.should eql 2
@h_1.weeks.first(:id => 2).should_not eql nil
end
end
end