你如何在Heroku上運行rspec和黃瓜？

我希望能夠在Heroku上的演示應用程序上運行rspec和黃瓜。我有一個單獨的生產應用程序，我將我的開發分支推向舞臺，將我的主分支推向生產。你如何在Heroku上運行rspec和黃瓜？

我已經將RACK_ENV變量設置爲'staging'並且還添加了一個staging.rb配置文件。

運行RSpec的，黃瓜在本地：

兩個RSpec的，黃瓜運行正常本地使用命令

$ rspec spec

$ cucumber features

在Heroku上升級應用 rspec的運行

問題是我無法讓他們在我的Heroku分段程序上運行。我明白，RSPEC在Heroku上正確的做法是：

$ heroku rake spec --remote staging

每當我跑這雖然我得到以下錯誤：

rake aborted! 
You have a nil object when you didn't expect it! 
You might have expected an instance of Array. 
The error occurred while evaluating nil.[] 
/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/railties/databases.rake:429:in `block (3 levels) in <top (required)>' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `call' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `block in execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:595:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:581:in `invoke' 
/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/railties/databases.rake:460:in `block (3 levels) in <top (required)>' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `call' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `block in execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:595:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:581:in `invoke' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2041:in `invoke_task' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `block (2 levels) in top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `block in top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2013:in `top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:1992:in `run' 
/usr/ruby1.9.2/bin/rake:31:in `<main>' 
(in /app)

在Heroku上升級應用程序運行黃瓜

同樣：

$ heroku rake cucumber --remote staging

結果於：

rake aborted! 
You have a nil object when you didn't expect it! 
You might have expected an instance of Array. 
The error occurred while evaluating nil.[] 
/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/railties/databases.rake:429:in `block (3 levels) in <top (required)>' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `call' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `block in execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:595:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:581:in `invoke' 
/app/.bundle/gems/ruby/1.9.1/gems/activerecord-3.0.7/lib/active_record/railties/databases.rake:460:in `block (3 levels) in <top (required)>' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `call' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:634:in `block in execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:629:in `execute' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:595:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:605:in `block in invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:602:in `invoke_prerequisites' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:594:in `block in invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:588:in `invoke_with_call_chain' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:581:in `invoke' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2041:in `invoke_task' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `block (2 levels) in top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `each' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2019:in `block in top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2058:in `standard_exception_handling' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2013:in `top_level' 
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:1992:in `run' 
/usr/ruby1.9.2/bin/rake:31:in `<main>' 
(in /app)

這個問題顯然是與數據庫有關，但我不知道如何解決它。

來源

2011-05-26 Peter Nixey

你在'database.yml'中設置了'staging'嗎？ – 2011-05-26 15:25:55

@Thomas是的我可以 – 2011-05-27 11:32:46

你能解釋爲什麼你想在Heroku上運行這些嗎？這不一定是個壞主意，因爲您的開發平臺可能存在差異，但我只是想知道您的想法是什麼，因爲大多數人只會在本地運行它們，並在像哈德森這樣的持續集成環境中運行它們。 – 2011-05-27 13:40:30

問題是測試使用單獨的數據庫，而不是運行應用程序的數據庫。這第二個數據庫你沒有在Heroku上得到。有關類似問題的答案，請參閱Running Rails unit tests on Heroku。

來源

2011-08-14 17:49:46 eugen

謝謝你。如果你只是在heroku上使用單獨的實例，那麼你可以使用該實例上的生產數據庫進行測試？ – 2011-08-15 09:20:11

您可以創建一個單獨的實例進行測試，將RACK_ENV設置爲「測試」，然後使用生產數據庫進行測試（請參閱http://stackoverflow.com/questions/5981508/share-database-between-2-apps-in -heroku/5981700＃5981700），但要小心，運行測試會在您每次運行數據庫時清除數據庫。 – eugen 2011-08-15 10:00:20

太好了，謝謝，我會試試看 – 2011-08-15 11:45:31

你如何在Heroku上運行rspec和黃瓜？

回答

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