测试：使用 self，预期：1 次，收到参数：0 次

Question

我目前正在为使用 Boxr gem 对 Box API 进行 http 调用的 Proxy Class 编写测试。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 upload_file_to_box 被执行时，client 的方法 upload_file 被调用并带有参数 file_path 和 folder。我猜这种情况下的错误是 self.folder 方法。

它从它的 id 中检索一个文件夹，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，method 存根为 return 字符串。 allow(subject).to receive(:folder).with(folder_id).and_return('123')

这里是完整的方法测试：

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 pry 进入测试用例，我可以看到 calling 文件夹执行 return 预期字符串。

[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>)>

然而，当我运行测试时，我仍然得到错误，就好像 upload_file_to_box 从未被调用过一样。

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

Answer 1

我想你可以先把 expect(client).to receive(:upload_file).with(file_path, folder_id) 放在 subject.upload_file_to_box(file_path, file_name, folder_id)

上面

测试：使用 self，预期：1 次，收到参数：0 次

Test: Using self, expected: 1 time with arguments received: 0 times

ruby

rspec

boxapiv2

webmock