In this article, we’ll look at what side effects are, why they are problematic despite being necessary, and how...
...app such as PHP, Perl, Java / JEE, etc. I like using cucumber for functional testing so I put together this project structure to use as a starting point for testing...
jqueryElement.is(':checked')
...this article we’ve listed 7 fresh and simple tools for cross-browser compatibility testing, tools that actually make this stuff pretty easy. Not only that, but every single one...
Celerity is a JRuby wrapper around HtmlUnit – a headless Java browser with JavaScript support. It provides a simple API for...
What do we expect from the custom finder? We expect that it should find assets A, B, C and should...
...Just increase the last index when proceeding to the next example. Handy when the test file frequently changes, e.g. because before blocks are modified. The line number approach would easily...
...search results for example to the /app/ directory can be helpful to exclude all test files. The probably easiest way to start this kind of search is from the project...
# At this point we want to stop in the debugger for all following tests, when the :lock call runs into the after_save $debug = true expect { user.lock }.to change...
...processing library. See here for a list of supported queueing adapters. For development and test it also brings its own queue adapters (async, inline and test). Note: For production use...
...have different adapters for different environments): config.active_job.queue_adapter = :sidekiq To set specific adapters in tests, you can create a spec/support/active_job.rb with: RSpec.configure do |config| config.before(:suite) do ActiveJob::Base.queue_adapter...
Test suites usually grow over time as more and more development time is spent on a projects. Overall run-time and performance of Cucumber suites in turn increases, too.
...If you are unsure if you applied this technique correctly, here is a simple test: Delete all files from app/models/* and run your migration. If it completes successfully, you are...
...setInterval and setTimeout calls from tabs that are currently in the background. You can test it yourself by running the test below and change to a different...
...tab during its runtime. The expected runtime drastically increases in Chrome, Firefox and Safari: https://testbed.nicon.nl/timeouttest/ See also: Stop animations and network polling when the document tab isn't...
...lazy, i.e. page 2 is only requested after page 1 is done processing in tests, I could write video_service.each_video.to_a.should == [video_1,...] Lazy enumerators It is possible to chain methods on...
Sidekiq.configure_client do |config| if ENV['RAILS_ENV'] == 'development' || ENV['RAILS_ENV'] == 'test' stdout_logger = ActiveSupport::Logger.new(STDOUT) file_logger = ActiveSupport::Logger.new("log/sidekiq_#{ENV['RAILS_ENV']}.log")
end Sidekiq.configure_server do |config| if ENV['RAILS_ENV'] == 'development' || ENV['RAILS_ENV'] == 'test' stdout_logger = ActiveSupport::Logger.new(STDOUT) file_logger = ActiveSupport::Logger.new("log/sidekiq_#{ENV['RAILS_ENV']}.log")
to add the Ruby, Rails and RSpec cops to include the unit test 2. Report all existing offenses and exclude them initially To start your Rubocop integration it...
...rubocop --auto-gen-config to create a file that excludes all current violations. Your tests (including the Rubocop spec) should now all be green. Commit theses changes and consider whether...
...it becomes more difficult to optimize this query when joining other records (for my tests PostgreSQL was not able to use the GIN index on the joined table within a...
In tests, it is sometimes useful to create records with specific ids. On PostgreSQL this can cause problems: Usually, PostgreSQL uses an "autoincrement" sequences to provide sequential ids for new...
...cause an SQL error 'duplicate key value violates unique constraint "records_pkey"' Workaround In tests, one workaround would be to simply initialize all sequences with a large value, so that...
...receive(:env).and_return('production'.inquiry) puts Rails.env # prints "production" end puts Rails.env # prints "test" Note that, when overriding pre-existing mocks inside the block, they are not reverted to...
...See our libvips with CarrierWave card for: Converting colors to sRGB Stripping color profiles Testing ImageMagick provides a compare utility which can be used to measure color differences between two...
...compare writes it's result to STDERR. A lower score is better, I'd test for a threshold like <= 5. There are different comparison metrics available Link to the profile...
...you use Rubocop or Capybara. These gems most often live in your development and/or test group of the Gemfile and require English for you. Therefore to ensure that the library...
class Client class_attribute :config def self.configure self.config ||= Configuration.new yield(config) end def test uri = URI.parse(FooClient::Client.config.endpoint) Net::HTTP.get_response(uri) end end end module FooClient class Configuration...