我试图测试一个调用外部API的create方法,但是我在模拟外部API请求时遇到了麻烦。继续我的设置以及到目前为止我尝试过的事情:
class Update
def self.create(properties)
update = Update.new(properties)
begin
my_file = StoreClient::File.get(properties["id"])
update.filename = my_file.filename
rescue
update.filename = ""
end
update.save
end
end
context "Store request fails" do
it "sets a blank filename" do
store_double = double("StoreClient::File")
store_double.should_receive(:get).with(an_instance_of(Hash)).and_throw(:sad)
update = Update.create({ "id" => "222" })
update.filename.should eq ""
end
end
此刻我遇到了这个失败
Failure/Error: store_double.should_receive(:get).with(an_instance_of(Hash)).and_throw(:sad)
(Double "StoreClient::File").get(#<RSpec::Mocks::ArgumentMatchers::InstanceOf:0x000001037a9208 @klass=Hash>)
expected: 1 time
received: 0 times
为什么我的双重不工作?如何最好模拟对StoreClient::File.get
的调用,以便我可以在成功或失败时测试创建方法?
答案 0 :(得分:8)
问题是double("StoreClient::File")
创建了一个名为“StoreClient :: File”的双,它实际上并不代替真正的StoreClient::File
对象。
在你的情况下,我认为你实际上不需要双倍。您可以直接在get
对象上存根StoreClient::File
方法,如下所示:
context "Store request fails" do
it "sets a blank filename" do
StoreClient::File.should_receive(:get).with(an_instance_of(Hash)).and_throw(:sad)
update = Update.create({ "id" => "222" })
update.filename.should eq ""
end
end