Getting Capybara::DriverNotFoundError when trying to run Cucumber tests - ruby-on-rails

I'm getting this error when I run the cucumber tests. Everything seemed to be working fine the previous day but I can't figure out why it stopped working. I was trying to get capybara webkit working and I had changed a couple of files but I don't see why it should affect my tests. Any idea on how to fix this error I'm getting while running the cucumber tests?
Capybara::DriverNotFoundError: no driver called :rack was found, available drivers: :rack_test, :selenium, :webkit, :webkit_debug

You mentioned that you edited many files. Could it be that you didn't revert all the changes you made? I think Capybara would pick the 'rack_test' driver by default, and your system could not find the 'rack' driver.
Since you're doing Cucumber testing, you must have a file called 'env.rb' under the features/support folder. Make sure you don't force 'rack' as your Capybara driver, and your tests should run fine.

Related

Firefox is default but still get WebDriverError: unable to connect to chromedriver 127.0.0.1:9515

I'm setting up Capybara for the first time and it seems to be calling Chrome instead of Firefox by default.
At first I was getting the webdriver error:
Selenium::WebDriver::Error::WebDriverError:
unable to connect to chromedriver 127.0.0.1:9515*
with associated stacktrace
https://pastebin.com/TW5NWJgu
I was able to clear this by adding a gem 'chromedriver-helper' and the test now opens with chromium.
I also tried adding this to both spec_helper and rails_helper:
Capybara.register_driver :selenium do |app|
Capybara::Selenium::Driver.new(app, browser: :firefox)
end
I was able to confirm that rails was able to successfully call firefox because the following command in rails_helper does successfully launch Firefox (but does not take any further action) when I start the test (as per comments, I later removed this command).
RSpec.configure do |config|
driver = Selenium::WebDriver.for :firefox
end
I'm getting the same error on a separate machine and on a different rails app (also didn't have geckodriver set-up on the first pass of Capybara)
My understanding is that Capybara should call Firefox by default. There seems to be a second configuration somewhere that I can't find. Does anyone have an idea of where I might find the line that is calling chrome?
From the log file you provided we can see that you're using Rails 5.1, RSpec 3.8 and Capybara 2.18. Since the log also includes "actionpack-5.1.6/lib/action_dispatch/system_testing/driver.rb" we can tell that you're writing system tests/specs (through rspec-rails). The driver used by system tests is controlled by the driven_by method as documented in the RSpec system spec docs and by default uses the Rails registered :selenium driver which is configured to use Chrome. As documented in the Rails System Test docs you can switch to Firefox by specifying
driven_by :selenium, using: :firefox
Additionally, Capybara 2.18 is pretty much obsolete at this point. You probably want to update to the latest version (3.6 as of now) if you plan on using the latest versions of Firefox/Chrome.

RubyMine tries to run tests from ActionController::TestCase and similar classes

I'm using Minitest::Spec to write my tests. I've added gem 'minitest-reporters' to my Gemfile so that RubyMine can work property. An it is, except some (IMHO) strange behavior.
Let's say I want to run 'uuid_validator_test.rb' file that contains UUIDValidator test. I do that right-clicking on the file and then click 'Run ...'. RubyMine starts running the test, but for some strange reason also tries to run tests from ActionController::TestCase and similar classes. You can see it on the picture below:
Why is this happening and how can I force it to run just UUIDValidator test?

Rails, Jasmine-headless: Specs only run inside guard

I'm trying to set up a rails/backbone/jasmine suite, and I'm having a problem getting jasmine-headless-webkit to run.
If I run the jasmine suite via guard, it passes, but if I run jasmine-headless-webkit from console, I get:
2013-01-01 10:06:22.855 jasmine-webkit-specrunner[1809:707] *
WARNING: Method userSpaceScaleFactor in class NSView is deprecated on
10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. SyntaxError: Parse error
Test ordering seed: --seed 5430
And no tests run.
Just to clarify, the jasmine suite not only loads, but passes via Guard...but no joy at all in jasmine-headless-webkit. Any ideas appreciated
Old question, but if anyone is still looking for the best way to run Jasmine tests headless, look into the Snapdragon project, available here: https://github.com/reachlocal/snapdragon

change capybara driver without restarting spork

I am running integration tests for my Rails app using Cucumber with Capybara. I also use Spork for faster test runs. Capybara supports selenium and the headless poltergeist. Headless browser is good for faster test runs, but sometimes I also need to view what the browser is showing. This leads me to changing the Capybara driver and restarting spork.
Is there a way to change the Capybara driver without restarting spork?
Things that I have tried
[1] Added a module containing the driver code in features/support and referred that in Spork's each_run. It does not work and throws up an error.
[2] Using each_run to change the driver does not register the change until spork is restarted.
Spork.each_run do
Capybara.javascript_driver = :poltergeist
end
Figured it out. Capybara's github page had some information on this. Here's what I did:
Added the following code to features/support/hooks.rb
Before('#javascript') do
Capybara.current_driver = :poltergeist
end
This can be changed at any point without needing a Spork restart. I was unable to figure out a way to place it in the each_run block.

Why is RSpec so slow under Rails?

Whenever I run rspec tests for my Rails application it takes forever and a day of overhead before it actually starts running tests. Why is rspec so slow? Is there a way to speed up Rails' initial load or single out the part of my Rails app I need (e.g. ActiveRecord stuff only) so it doesn't load absolutely everything to run a few tests?
I definitely suggest checking out spork.
http://spork.rubyforge.org/
The railstutorial specifically addresses this, and gives a workaround to get spork running nicely in rails 3.0 (as of this moment, spork is not rails 3 ready out of the box). Of course, if you're not on rails 3.0, then you should be good to go.
The part of the tutorial showing how to get spork running in rails 3.0
http://railstutorial.org/chapters/static-pages#sec:spork
Checking when spork is rails 3.0 ready
http://www.railsplugins.org/plugins/440-spork
You should be able to to speed up your script/spec calls by running script/spec_server in a separate terminal window, then adding the additional -X parameter to your spec calls.
Why is rspec so slow? because it loads all the environement, loads fixtures and all that jazz.
Is there a way to speed up Rails' initial load you could try using mocks instead of relying on the database, this is actually correct for unit testing and will definitly speed up your unit tests. Additionnaly using the spec server as mentionned by #Scott Matthewman can help, same with the autotest from zentest mentionned by #Marc-Andre Lafortune
Is there a way to single out the part of my Rails app I need (e.g. ActiveRecord stuff only) so it doesn't load absolutely everything to run a few tests? what about this
rake test:recent
I am not sure how the rspec task integrate with this but you could definitely use the test:recent task as a template to do the same with rspec tests if the.
rake test:rspec:recent
doesn't exist yet
because it loads all the environement, loads fixtures and all that jazz.
The real culprit is if you run it using rake spec, it runs the db:test:prepare task.
This task drops your entire test database and re-creates it from scratch. This seems ridiculous to me, but that's what it does (the same thing happens when you run rake:test:units etc).
You can easily work around this using the spec application which rspec installs as part of the rspec gem.
Like this:
cd railsapp
spec spec # run all specs without rebuilding the whole damn database
spec spec/models # run model specs only
cd spec
spec controllers/user* # run specs for controllers that start with user
I think the "zen" experience you're looking for is to run spec_server and autospec in the background, with the result being near-instant tests when you save a file.
However, I'm having problems getting these two programs to communicate.
I found an explanation here:
I've noticed that autotest doesn't send commands to the spec_server.
Instead it reloads the entire Rails environment and your application's
plugins everytime it executes. This causes autotest to run
significantly slower than script server, because when you run the
script/spec command the specs are sent to the spec_server which
already has your Rails environment fired up and ready to go. If you
happen to install a new plugin or something like that, then you'll
have to restart the spec_server.
But, how do we fix this issue? I'm guessing it would involve downloading ZenTest and changing code for the autotest program, but don't have time to try it out right now.
Are you running this over Rails? If so, it's not RSpec's initialization that's slow, it's Rails'. Rails has to initialize the entire codebase and yours before running the specs. Well, it doesn't have to, but it does. RSpec runs pretty fast for me under my small non-rails projects.
Running tests can be really slow because the whole rails environment has to load (try script/console) and only then can all tests run. You should use autotest which keeps the environment loaded and will check which files you edit. When you edit and save a file, only the tests that depend on these will run automatically and quickly.
If you're using a Mac I recommend using Rspactor over autotest as it uses a lot fewer resources for polling changed files than autotest. There is both a full Cocoa version
RSpactor.app
or the gem version that I maintain at Github
sudo gem install pelle-rspactor
While these don't speed up individual rspec tests, they feel much faster as they auto run the affected spec's within a second of you hitting save.
As of rspec-rails-1.2.7, spec_server is deprecated in favor of the spork gem.
The main reason is that require takes forever on windows, for some reason.
Tips for speedup:
spork now works with windows, I believe.
You can try "faster_require" which caches locations:
http://github.com/rdp/faster_require
GL.
-rp
If you are on a Windows environment then there is probably little you can do as Rails seems to startup really slowly under Windows. I had the same experience on Windows and had to move my setup to a Linux VM to make it really zippy (I was also using autotest).

Resources