...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...
...Chaining / fluent interfaces Note that you can also make your matcher chainable, so a test can modifier its behavior. Using chaining you can write a matcher like this:
...expected #{given.inspect} not to rhyme with #{expected.inspect}" given.rhymes_with? expected end end end ActiveSupport::TestCase.send :include, RhymeWithMatcher 4) Write a matcher class (for complex matchers) module Aegis module Matchers
When an AJAX request raises an exception on the server, Rails will show a minimal error page with only basic...
...might look as follows: shared: &shared email: info@example.com google_analytics: container: UA-123456-12 test: <<: *shared development: <<: *shared production: <<: *shared email: production@example.com Keys under the shared namespace are shared between...
...wrong number of arguments. This dual approach allows you to move very quickly and test components in isolation, while giving you confidence that your doubles are not a complete fiction...
...behaviors of the built-in controls, as well as necessary accessibility requirements, and provide test suites to ensure compatibility. We’ll also implement polyfills for our extensible web UI controls...
...we expect that these design systems will benefit from Open UI’s specifications and test suites. Long term, we hope that Open UI will establish a standard process for developing...
In Paperclip you can use the validates_attachment_file_name macro to test the suffix of a filename: class User < ActiveRecord::Base has_attached_file :avatar validates_attachment...
...options to disable password leak detection and suppress the warning. Problem When running Selenium tests with recent versions of Chrome and Chromedriver (e.g., version 136+), entering “unsafe” (weak or reused...
"This password has appeared in a data breach…" This alert can break automated test runs, especially in CI/CD pipelines. Solution You can disable Chrome’s password leak detection to...
...method to (un)check checkboxes. But there's one problem, if you want to test a custom styled checkbox, which hides its -Tag: The methods cannot (un)check checkboxes without...
...Some label', allow_label_click: true). Solution 2 Make hidden inputs visible in integration tests via data-environment. Depending on your CSS framework you also need to adjust the z...
...this prior art when implementing yours? Checklist: I confirm my design implementation has been tested manually by me adheres to the code style of the project (e.g. BEM) avoids "magic...
...navigates through elements in order (or in an order that makes sense). You can test that by clicking into the page, top/left of the new design, and repeatedly pressing the...
...is because Redis defaults to at most 16 databases (0 to 15) and running tests in parallel might exceed that (your tests might run on databases 1..n or...
query.matches // => true or false Detecting when the query result changes The #matches() method tests the current screen width. To be notified when the width changes, you need additional scripting...
...so that only this will be run. This is very useful when using a test runner like guard. Add the following config to spec/spec_helper.rb: RSpec.configure do |config| # These two settings...
Jasmine comes with two matchers that test for equality. The first is toBe: expect(first).toBe(second) toBe passes when first === second. Unfortunately this is useless for non-primitive values...
...teach toEqual additional notions of equality. E.g. the following code will teach toEqual to test two jQuery collections for equality: beforeEach -> jasmine.addCustomEqualityTester (first, second) -> if first instanceof jQuery && second instanceof...
...updating the corresponding mailer preview can be forgotten very easily. Mailer previews can be tested like other code as well and I sometimes add the following tests to test suites...
...column} <@ array[:expected_values]", expected_values:) end end ..and include their specs to your test suite: describe ApplicationRecord do describe '.where_array_matches!' do let!(:matching_user) { create(:user, movie...
...want to define a global matcher since you need it only for your specific test, there are two ways to do it: Custom matcher for a single group
I recently stumbled over a problem that my feature tests broke in CI because of a mismatching chromedriver version. In this specific project we have a fixed Chromium version in...
...a Debian 12 environment instead of Chrome. The tests however used a recent chrome version instead. $ chromedriver --version ChromeDriver 117.0.5938.149 (e3344ddefa12e60436fa28c81cf207c1afb4d0a9-refs/branch-heads/5938@{#1539}) $ chromium --version Chromium 117.0.5938.149 built on...
...for the required model Write the controller first for the required model Write the tests first for the code bad: While doing this you can for example see easier when...
If a project ist configured to spawn CI runners for tests or deployment when pushing to the Repo, a habit of pushing WIP commits regularly may conflict with that.
...don't need any "conversion" hacks which try to replace commas with dots. Additionally, tests which control browsers with Selenium will also see point-formatted values on non-English locales...
...the number of requests for a single IP address. Bash Command awk '{ print $1}' test.log | sort | uniq --count Result 1 87.140.79.41 3 87.140.79.42 Explain awk '{ print $1}' test.log...
...and not_change { Video.count } The above example will call playlist.destroy only once, but test both assertions. Note When you chain multiple Capybara matchers using and, Capybara will retry all matchers...
# 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...