I’m trying to stub out a Class method for any instance of the class (via any_instance). My tests run through successfully, but at the end of the test when rspec is trying to reset the any_instance stub, it throws an error (Unable to find matching line from backtrace). Here’s the apparent culprit line of code (removing it removes the error):
Confetti::Config.any_instance.stub(:write_info)
The full error is below. Seems like stub should’ve (but fails to) created the __rspec_original_dup method, and when the reset happens, it can’t find the expected method.
Failure/Error: Unable to find matching line from backtrace
NameError:
undefined method `__rspec_original_dup' for class `Confetti::Config'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/any_instance.rb:73:in `alias_method'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/any_instance.rb:73:in `restore_dup'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/any_instance.rb:72:in `class_eval'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/any_instance.rb:72:in `restore_dup'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/any_instance.rb:46:in `rspec_reset'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/space.rb:17:in `reset_all'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/space.rb:16:in `each'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks/space.rb:16:in `reset_all'
# /Library/Ruby/Gems/1.8/gems/rspec-mocks-2.11.1/lib/rspec/mocks.rb:23:in `teardown'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/mocking/with_rspec.rb:18:in `teardown_mocks_for_rspec'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:308:in `run_after_each'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:119:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:253:in `with_around_each_hooks'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example.rb:110:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:378:in `run_examples'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:374:in `map'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:374:in `run_examples'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:360:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `map'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/example_group.rb:361:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `map'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:28:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/reporter.rb:34:in `report'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/command_line.rb:25:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:69:in `run'
# /Library/Ruby/Gems/1.8/gems/rspec-core-2.11.1/lib/rspec/core/runner.rb:8:in `autorun'
# /usr/bin/rspec:19
I solved this by simply using Rspec v2.10.0 instead of v2.11.0:
From the links that Henrik provided, it sounds like they may release a bugfix for Rspec. Watch this issue for more information. In the meantime, downgrading solved the issue for me.
(Thanks for your work in helping me figure this out, Henrik.)