Rspec嘲笑一個錯誤，即.backtrace被調用？

我想模擬一個錯誤消息，以一個錯誤作爲參數並調用.backtrace。我的方法是這樣的：Rspec嘲笑一個錯誤，即.backtrace被調用？

def log_error(error) 
    puts error.backtrace 
    puts "RECONCILE_TAX_RATES [#{Time.now}] ERROR [#{error.message}]" 
    end

把error.backtrace線之前，我的測試看起來像：

it 'logs errors' do 
    time = "Tue, 16 Sep 2014 20:18:19 UTC +00:00" 
    Timecop.freeze(time) do 
     tax_reconciler = TaxReconciler.new 
     error_message = "I'm sorry, Dave. I'm afraid I can't do that." 
     expected = "RECONCILE_TAX_RATES [2014-09-16 20:18:19 UTC] ERROR [I'm sorry, Dave. I'm afraid I can't do that.]" 

     STDOUT.should_receive(:puts).with(expected) 
     tax_reconciler.log_error(error_message) 
    end 
    end

目前該方法已經改變採取的錯誤，而不僅僅是一個消息我很困惑至於如何編寫測試。任何幫助表示讚賞，並讓我知道如果我需要包括更多的信息，請。

the error I am getting is: 
Failure/Error: tax_reconciler.log_error(error_message) 
    NoMethodError: 
     undefined method `backtrace' for "I'm sorry, Dave. I'm afraid I can't do that.":String

以便每下面我試圖

it 'logs errors' do 
    time = "Tue, 16 Sep 2014 20:18:19 UTC +00:00" 
    Timecop.freeze(time) do 
     expected = "RECONCILE_TAX_RATES [2014-09-16 20:18:19 UTC] ERROR [I'm sorry, Dave. I'm afraid I can't do that.]" 
     STDOUT.should_receive(:puts).with(expected) 
     tax_reconciler = TaxReconciler.new 
     begin 
     raise "I'm sorry, Dave. I'm afraid I can't do that." 
     rescue => error_message 
     tax_reconciler.log_error(error_message) 
     end 
    end 
    end

確定這樣的建議下面的解決方案是如下的建議：

it 'logs errors' do 
    time = "Tue, 16 Sep 2014 20:18:19 UTC +00:00" 
    Timecop.freeze(time) do 
     expected = "RECONCILE_TAX_RATES [2014-09-16 20:18:19 UTC] ERROR [I'm sorry, Dave. I'm afraid I can't do that.]" 
     tax_reconciler = TaxReconciler.new 
     begin 
     raise "I'm sorry, Dave. I'm afraid I can't do that." 
     rescue => error_message 
     STDOUT.should_receive(:puts).with(expected) 
     STDOUT.should_receive(:puts).with(error_message.backtrace) 
     tax_reconciler.log_error(error_message) 
     end 
    end 
    end

來源

2014-09-23 ruby_newbie

你從rspec那個斷言中得到了什麼輸出？ – Discorick 2014-09-24 02:03:58

@Discorick我更新了當前的錯誤信息。 – 2014-09-24 15:02:53

基於該Rspec的錯誤消息，您的源失敗很簡單。在你的規範中，你傳遞一個字符串作爲錯誤。

error_message = "I'm sorry, Dave. I'm afraid I can't do that."

的的log_error方法試圖稱之爲「回溯」的字符串，而不是一個實際的異常試試這個：。

begin 
    raise "I'm sorry, Dave. I'm afraid I can't do that." 
rescue => error_message 
    tax_reconciler.log_error(error_message) 
end

這將傳遞一個實際的異常對象插入方法

來源

2014-09-24 16:29:28 Discorick

Rspec嘲笑一個錯誤，即.backtrace被調用？

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