Ruby 测试：使用self，预期：1次，收到参数：0次

我目前正在为一个代理类编写测试，该类使用Boxr gem对Box API进行http调用。目前，我有以下方法：

class BoxApi
 ####
  def upload_file_to_box(file_path, file, box_folder_id)
    client.upload_file(file_path, self.folder(box_folder_id))
  rescue Boxr::BoxrError
    file = find_file_by_name(file).shift
    client.upload_new_version_of_file(file_path, file)
  end

我想测试当执行

upload\u file\u to\u box

时，

client

的方法

upload\u file

用参数

file\u path

和

folder

调用。我猜这种情况下的错误是

self.folder

方法

它从其id检索文件夹，如下所示：

class BoxApi
#######
  def folder(box_folder_id)
    prepare_folder(box_folder_id)
  end

  def prepare_folder(folder_id)
    client.folder_from_id(folder_id)
  end

我想这就是错误的来源。但是，

方法

被存根以返回字符串<代码>允许（主题）。接收（：文件夹）。使用（文件夹id）。和返回（'123'）

以下是完整的方法测试：

context 'success' do
  subject { BoxApi.new }
  let(:client) { Boxr::Client.new(refresh_token: nil, jwt_private_key: nil) }

  let(:file_path) {'spec/fixtures/pdfs/pdf_without_data.pdf'}
  let(:file_name) {'pdf_without_data.pdf'}
  let(:folder_id) {'123'}

  it 'Uploads file to folder on Box' do
    allow(subject).to receive(:client).and_return(client)
    allow(subject).to receive(:folder).with(folder_id).and_return('123')
    allow(client).to receive(:upload_file).with(file_path, folder_id).and_return(status: 201)


    subject.upload_file_to_box(file_path, file_name, folder_id)

    expect(client).to receive(:upload_file).with(file_path, folder_id)
  end
end

如果我将

撬入测试用例，我可以看到
调用
文件夹确实返回expect字符串

[1] pry(#<RSpec::ExampleGroups::BoxApi::UploadFileToBox::Fail>)> subject.upload_file_to_box(file_path, file_name, folder_id)
=> {:status=>201}
[2] pry(#<RSpec::ExampleGroups::BoxApi::UploadFileToBox::Fail>)> self
=> #<RSpec::ExampleGroups::BoxApi::UploadFileToBox::Fail "Uploads file to folder on Box" (./spec/clients/box_api.rb:101)>
[3] pry(#<RSpec::ExampleGroups::BoxApi::UploadFileToBox::Fail>)> subject.folder(folder_id)
=> "123"
[4] pry(#<RSpec::ExampleGroups::BoxApi::UploadFileToBox::Fail>)>

我想你可以先把
expect（client）.to接收（：upload\u file）.with（file\u path，folder\u id）
放在
主题上面。upload\u file\u to\u box（file\u path，file\u name，folder\u id）

Failures:

  1) BoxApi#upload_file_to_box fail Uploads file to folder on Box
     Failure/Error: expect(client).to receive(:upload_file).with(file_path, folder_id)

       (#<Boxr::Client:0x00007fea5f8b1db0 @access_token="123", @refresh_token=nil, @client_id="1234", @client_secret="345", @enterprise_id=nil, @jwt_private_key=nil, @jwt_private_key_password="1234545677", @jwt_public_key_id="12345467", @identifier=nil, @as_user_id=nil, @token_refresh_listener=nil>).upload_file("spec/fixtures/pdfs/pdf_without_data.pdf", "123")
           expected: 1 time with arguments: ("spec/fixtures/pdfs/pdf_without_data.pdf", "123")
           received: 0 times