...you use that "db count" and process the loaded elements. A common example is tests: Imagine a test that sets up a few records and finishes the test setup by...
...records have loaded (i.e. cached) their associations too early and now are missing elements. Tests relying on the setup will fail, because they will operate on the loaded records. You...
The linked MDN article is quite informative of a neat feature supported by all major browsers: Unicode character class escape...
...that are built into RSpec. Play with some of these matchers in your MovieDB tests. The benefits of using better matchers Which of the following two lines is better? Why...
...in your MovieDB. It saves a duplicate of the movie, copying all the attributes. Test this method using your new have_same_attributes_as matcher. Tip ActiveSupport gives your arrays...
Capybara-screenshot can automatically save screenshots and the HTML for failed Capybara tests in Cucumber, RSpec or Minitest. Requires Capybara-Webkit, Selenium or poltergeist for making screenshots. Screenshots are saved...
...Manually saving a page Additionally you can trigger the same behavior manually from the test using Capybara::Session#save_and_open_page and Capybara::Session#save_screenshot. Use Rails' built...
...Shift. The achieved scores should not be lost again, so I fixed them with tests. How to test Web Vital scores In a test: Build & open the (stereotype) page you...
...want to ensure Web Vital scores for Throttle test browser I/O (because your development machine is more powerful than real-world devices) Expect Web Vital scores For this to work...
Usually our code lives on GitLab, therefore our documentation for CI testing is extensive in this environment. If you are tied to GitHub e.g. because your customer uses it, you...
...template uses two such custom actions: setup-node and setup-ruby .github/workflows/integration-testing.yml name: Integration Testing on: push: branches: [ main, production ] pull_request: branches: [ main, production ] # Display "Run Workflow" button on...
...implement sending an error notification if the data (in the db) is too old. Testing: If you use sidekiq_retries_exhausted (unit test): https://stackoverflow.com/questions/33930199/rspec-sidekiq-how-to-test-within-sidekiq-retries-exhausted-block-with-another If you use the...
...global option (manual test): # Use this worker to test if the exception notifier for sidekiq works as expected and the retries total duration fits. # Example: TestWorker.perform_async('foo', 'bar')
...you need additional form fields (like tax IDs) to bill customers in another language. Tests Tests should continue to use the base language you had before starting localization. Don't...
...rewrite all tests and don't test every screens with every language unless repeatedly broken translations becomes a pain point. Do test non-trivial language-specific customizations like the parsing...
...you are using a driver that supports it (e.g. Selenium, not the default Rack::Test driver). Consider the following HTML: One Two With some CSS: .test1 { display: block } .test2 { display...
...Default: visible: :visible As described above, by default Capybara finds only visible elements. find('.test1') finds the .test1 element find('.test2') raises a Capybara::ElementNotFound error, as the .test2 element...
...created. When editing a movie there is a "Year" field that can be changed. Testing: Learn techniques Write tests for both exercises. Write multiple variants, each using a different approach...
...you minimize the number of lines of code that now no longer run during tests? Mock out the network request to the API using Webmock Mock out the network request...
Haml HTML generated by Haml 5 HTML generated by Haml 6 %button(up-test) %button(up-test=true) %button(up-test=false) %button(up-test=nil) %button(up-test...
same %button(up-test='false') same %button(up-test='') same Extending the list of attributes considered "boolean" You can add to the list of "boolean attributes", but please do...
...data-environment=<%= Rails.env %>> Now you can say in a piece of Javascript: if (document.documentElement.dataset.environment == 'test') { // Code that should happen in Selenium tests } else { // Code that should happen for other environments...
...Or in your CSS / Sass: html[data-environment="test"] { * { text-transform: none !important; } } See also Cucumber: Detect if the current Capybara driver supports Javascript
.../public/assets-test/', '/tmp/', ] } 2. Report all existing offenses and exclude them initially Add an RSpec test, which runs ESLint (also during a full RSpec test run), e.g. in spec/eslint_spec.rb: require 'open3...
expect(status.success?).to eq(true), failure_message end end Run the test or simply run yarn run eslint . from your console to check all files. Now you...
...pack is application.js): = image_pack_tag('media/application/images/logo.png') Deployment Follow Configuring Webpacker deployments with Capistrano. Tests In your cucumber test, you will want to regenerate your assets before each test suite...
...run. Since this is a bit slow, especially when using multiple processes with parallel_test, read this card. jQuery If you still require jQuery, add it to your webpacker project...
Code splitting is a feature of esbuild that can keep huge libraries out of the main bundle. How code splitting...
...authorized users only 3. Using the same storage folder for multiple Rails environments or test processes This one affects your developers. If an image with ID 4 always ends up...
...as public/system/images/4.jpg, multiple Rails environments (e.g. development and test) will randomly see and overwrite each other's files. See Always store your Paperclip attachments in a separate folder per environment...
The issue: You are using stub_const to change a constant value for your test. stub_const "SomeClass::CONST", 'test' All of a sudden, tests fail with undefined method 'some...
...workaround, use stub_const in your Rails specs like this: stub_const "#{SomeClass}::CONST", 'test' This will invoke Rails' autoloading and fix RSpec's behavior for you...
...started your screen reader you can simply navigate to whatever application you want to test and the screen reader will start to do its thing. If your screen reader isn...
...the application. If that still does not work, then the application you want to test may not be supported. Since we are usually building websites though, that should not pose...
Tests are about 100% control over UI interaction and your test scenario. Randomness makes writing tests hard. You will also push tests that are green for you today, but red...
This creates ugly sample data like "First3 Last3", but e.g. doesn't make tests pass when they shouldn't...
Slow test suites are a major pain point in projects, often due to RSpec and FactoryBot. Although minitest and fixtures are sometimes viewed as outdated, they can greatly improve test...
...fixtures, and while it required some initial refactoring and establishing good practices, the faster test suite was well worth it! Stick with me to explore how these tools might actually...
...a MIT-based polyfill called Hyphenopoly. It applies JS-based hyphenation if a feature test shows that CSS based hyphenation is not supported for the given locale. Note that Hyphenopoly...
...can no longer search for the full word in the pasted text. Note that test browsers will also see the soft hyphens, which makes testing uncomfortable. Automatic insertion of soft...
We recommend configuring Selenium's unhandled prompt behavior to { default: 'ignore' }. When running tests in a real browser, we use Selenium. Each browser is controlled by a specific driver...
...receive a Selenium::WebDriver::Error::UnexpectedAlertOpenError. This is probably what you want for running tests. Different types of prompts It is possible to handle different types of prompt separately. For...
The :test adapter doesn't respect limits_concurrency configuration. Switch to :solid_queue adapter in your test to verify blocking behavior. Job Configuration class MembershipJob < ApplicationJob limits_concurrency(key: ->(membership...
end The problem When using the default test mode for enqueuing jobs, both will be enqueued immediately. However, we actually we want to test that only one of both...
...can use this command: :%s/{{\([^\}]*\)}}/%{\1}/cg Fix deprecation warnings with :overwrite_params Run tests Deploy See the commit log for a detailed list of changes. 2.3.9 to 2.3.10
...Upgrade rails gem Change your environment.rb so it says RAILS_GEM_VERSION = '2.3.10' Run tests Deploy Also see commit log. From 2.3.10 to 2.3.11 Fixes multiple security issues.