我有一个方法,其中包含一个开始/救援块.如何使用RSpec2测试救援块？
class Capturer
def capture
begin
status = ExternalService.call
return true if status == "200"
return false
rescue Exception => e
Logger.log_exception(e)
return false
end
end
end
describe "#capture" do
context "an exception is thrown" do
it "should log the exception and return false" do
c = Capturer.new
success = c.capture
## Assert that Logger receives log_exception
## Assert that success == false
end
end
end
解决方法
使用
should_receive和
should be_false：
context "an exception is thrown" do
before do
ExternalService.stub(:call) { raise Exception }
end
it "should log the exception and return false" do
c = Capturer.new
Logger.should_receive(:log_exception)
c.capture.should be_false
end
end
另请注意,您不应该从Exception中抢救,而是更具体.例外涵盖了一切,几乎绝对不是你想要的.您最多应该从StandardError中抢救,这是默认值.