Problem with consecutive GET requests in integration test

rubyonrails-talk
1

class UserStoriesTest < ActionController::IntegrationTest   test "some test" do     get "/"     assert_response :success     get "/"     assert_response :success   end end

When I run the code above the first assertion passes. However, the second assertion fails because the response is a 500. To be more specific I get this error:

Expected response to be a <:success>, but was <500> <"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.+">

Anyone have an explanation? I want to to test some going to the homepage and then clicking on a link to the login page which is why I am calling consecutive GET requests. Help me if I am going about it the wrong way.

Thanks in advance!

2

Have a look in test.log, there should be more information about the error there, including where the error occurred.

Colin

3

Well this is all I get and i can't really make anything out of it:

NoMethodError (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.+):   /test/integration/user_stories_test.rb:12:in `some_test'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:34:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:33:in `each'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:33:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:34:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:33:in `each'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/testsuite.rb:33:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/ui/testrunnermediator.rb:46:in `run_suite'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/ui/console/testrunner.rb:67:in `start_mediator'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/ui/console/testrunner.rb:41:in `start'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/ui/testrunnerutilities.rb:29:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/autorunner.rb:216:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit/autorunner.rb:12:in `run'   /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ 1.8/test/unit.rb:278   rake (0.8.7) lib/rake/rake_test_loader.rb:5

Rendered rescues/_trace (36.6ms) Rendered rescues/_request_and_response (1.3ms) Rendering rescues/layout (internal_server_error)

4

Well this is all I get and i can't really make anything out of it:

NoMethodError (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.+): /test/integration/user_stories_test.rb:12:in `some_test'

Which is that line? The code you showed only had 8 lines.

Colin

5

It's line #6. Sorry I cut out some comments and stuff so as to not clutter the post. The response is a 500 and the assertion is failing on like number 6 because it is expecting a 200. I'm just trying to figure out why it's a 500.

6

Well this is all I get and i can't really make anything out of it:

NoMethodError (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.+): /test/integration/user_stories_test.rb:12:in `some_test'

You'd need to at least look at what's on that line and see what's on the left side of a '+'. THAT object is probably nil (and the whiny nils of Rails is looking for something that responds to + and offers Array as one possibility).

-Rob

Rendered rescues/_trace (36.6ms) Rendered rescues/_request_and_response (1.3ms) Rendering rescues/layout (internal_server_error)

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Rob Biedenharn Rob@AgileConsultingLLC.com http://AgileConsultingLLC.com/ rab@GaslightSoftware.com http://GaslightSoftware.com/

7

It's line #6. Sorry I cut out some comments and stuff so as to not clutter the post. The response is a 500 and the assertion is failing on like number 6 because it is expecting a 200. I'm just trying to figure out why it's a 500.

The error in the trace is showing as line 12, are you saying that is the assert line? Could you post the whole file please just to keep me happy.

Could you post the log showing the first half of the test also (the get that works).

Please don't top post, it makes it difficult to follow the thread. Thanks.

Colin

8

I'm not sure what you mean by "see what's on the left side of a '+'." because there is no '+'.

Just out of curiosity, can someone run this test on their app? I've found that the same error happens even on a simple app that has a root url available.

btw, I'm using rails 2.3.8 and ruby 1.8.7

Thanks!

9

Your error log says otherwise:

"The error occurred while evaluating nil.+"

That means you tried to do addition with a nil, and that doesn't work since nil doesn't support the '+' method.

10

I'm not sure what you mean by "see what's on the left side of a '+'." because there is no '+'.

Just out of curiosity, can someone run this test on their app? I've found that the same error happens even on a simple app that has a root url available.

It works ok for me on rails 2.3.2.

Colin

11

So I investigated further and it seems to be a facebooker problem with session management. When I find the root problem, I'll post what it is and what I did to fix it. Thanks for the help!