我正在尝试从一个对象中存根出Net::SFTP。这是模型:
class BatchTask
require 'net/sftp'
def get_file_stream(host, username, password, path_to_dir, filename)
raise ArgumentError if host.nil? or username.nil? or password.nil? or path_to_dir.nil? or filename.nil?
file_stream = nil
Net::SFTP.start(host, username, password) do |sftp|
sftp.dir.glob(path_to_dir, filename) do |entry|
# Verify the directory contents
raise RuntimeError(true), "file: #{path_to_dir}/#{filename} not found on SFTP server" if entry.nil?
file_stream = sftp.file.open("#{path_to_dir}/#{entry.name}")
end
end
file_stream
end
end
这是规范:
require 'spec_helper'
describe "SftpToServer" do
let(:ftp) { BatchTask::SftpToServer.new }
it "should return a file stream" do
@sftp_mock = mock('sftp')
@entry = File.stubs(:reads).with("filename").returns(@file)
@entry_mock = mock('entry')
@entry_mock.stub(:name).with("filename").and_return("filename")
@sftp_mock.stub_chain(:dir, :glob).and_yield(@entry_mock)
Net::SFTP.stub(:start).and_yield(@sftp_mock)
@sftp_mock.stub_chain(:file, :open).with("filename").and_yield(@file)
ftp.get_file_stream("ftp.test.com", "user", "password", "some/pathname", "filename").should be_kind_of(IO)
end
end
以下是堆栈跟踪:
Spec::Mocks::MockExpectationError in 'SftpToServer should return a file stream'
Mock "entry" received :name with unexpected arguments
expected: ("filename")
got: (no args)
/Users/app/models/batch_task/sftp_to_server.rb:12:in `get_file_stream'
/Users/app/models/batch_task/sftp_to_server.rb:9:in `get_file_stream'
/Users/app/models/batch_task/sftp_to_server.rb:8:in `get_file_stream'
./spec/models/batch_task/sftp_to_server_spec.rb:15:
首先,我的方法是否正确?我想删除SFTP的功能,因为我们可以确信它已经经过了充分的测试。相反,我希望专注于确保“黑匣子”内部返回文件流。
其次,我如何正确地存根化sftp.file.open()以实现这一点?
提前感谢任何想法!