Question

我有一个方法，里面有一个开始/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

Answer 1

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，您应该不从Exception中抢救，但更具体。 Exception涵盖所有内容，这几乎绝对不是您想要的。您最多应该从StandardError开始营救，这是默认设置。

使用RSpec如何测试救援例外块的结果

1 个答案: