Whenever you have to deal with randomness in a jasmine test there are some spy strategies to help you out! Let's say we have a method Random.shuffle(array) to...
...shuffles the array', () => { spyOn(Random, 'shuffle').and.returnValue([3, 2, 1]) array = [1, 2, 3] testedClass = new testedClass(array) expect(Random.shuffle).toHaveBeenCalled() expect(testedClass.array).toEqual([3, 2, 1]) })
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...
...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...
...get Jasmine specs running in a Rails project using Webpacker, with the browser based test runner. Should be easily adaptable to a pure Webpack setup. Step 1: Install Jasmine
...Javascript, we will create two additional packs. The first only contains Jasmine and the test runner. The second will contain our normal application code and the specs themselves.
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...
...serve requests with the HOST header hacker.xyz You need to take care in your tests, that you reset ActionMailer::Base.default_url_options after e.g. request specs, e.g. spec/support/action_mailer.rb: RSpec.configure do...
...format before you can use it for plotting: Numo.gnuplot do .. # more plot settings plot "'test.csv'", u: "(hist($#{column_to_plot},width)):(1.0)" s: true, f: true, ...
output "hist.jpg" end
...write any array files into a temporary csv file before passing it Numo.gnuplot: CSV.open('test.csv', 'w') do |csv| random_values.zip(additional_values, absolute_values, other_values).each_with_index do |zipped...
...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...
...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...
Using RSpec matchers One rule of thumb I try to follow in capybara tests is using capybara matchers and not plain rspec matchers. One example: visit(some_page)
...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
...current JavaScript VM: window.addEventListener('error', function(event) { console.log("Got an uncaught error: ", event.error) }) Tip Testing tools like Jasmine might also listen to the error event and fail your test if...
...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...
...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...
...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...
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...
...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...
...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...
...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...
...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
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...
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.