Jasmine is a great tool to unit test your JavaScript components without writing an expensive end-to-end test for every little thing. Jasmine is a purely client-side tool...
...or access the database. Any HTTP calls must be mocked. Learn What do we test with Jasmine? Just as unit tests are a direct way to closely look at your...
...ihm über die Dinge, die du im Netzwerktab herausfinden kannst. Starte dir einen LXD Testcontainer mit Ubuntu. Installiere Nginx und erstelle eine Konfiguration die folgende Eigenschaften erfüllt:
...sie dir in die /etc/hosts mit der entsprechenden IP einträgst. Installiere Docker auf deinem Testcontainer und starte httpbin auf Port 8080. Du kannst dafür folgendes Kommando verwenden:
...displays a beforeunload confirmation dialog, ChromeDriver will immediately close it. In consequence, any automated tests which try to interact with unload prompts will fail. This is because ChromeDriver now follows...
...that any unload prompts should be closed automatically. However, this applies only to "HTTP" test sessions, i.e. what you're using by default. The spec also defines that bi-directional...
...using inheritance, modules, traits or partials. When you reuse behavior you want to reuse tests as well. You are probably already reusing examples in unit tests. Unfortunately it is much...
...harder to reuse code when writing integration tests with Cucumber, where you need to express yourself with Gherkin and step definitions instead of Ruby classes and methods.
When testing JavaScript functionality in Selenium (E2E), you may need to access a class or function inside of a evaluate_script block in one of your steps. Capybara may only...
...are exporting your definition(s) in Webpacker, these won't be available in your tests (and neither in the dev console). The following principles/concepts also apply to Sprockets.
...you are using database-cleaner with DatabaseCleaner.strategy = :transaction, this could lead to problems in tests. You should use DatabaseCleaner.strategy = :truncation for the tests that touch your parallelized code...
...your config/database.yml: default: &default adapter: postgresql # ... variables: statement_timeout: 10s # or ms, min, etc Test that it works: ActiveRecord::Base.connection.execute("show statement_timeout;").map { |row| row } => [{"statement_timeout"=>"10s"}]
...by adjusting your config/database.yml: default: &default adapter: mysql2 # ... variables: max_execution_time: 10000 # ms Test that it works: begin ActiveRecord::Base.connection.execute("SELECT 1 WHERE sleep(15)") rescue ActiveRecord::StatementTimeout => e...
Click around a bit. Fix all errors you can find. Fix tests Fix unit tests. Fix integration tests. Upgrade to new framework defaults Flip each config in...
...after you've upgraded to the latest major version.) Fix deprecation warnings. Run your tests and fix all deprecation warnings. If you have added many constraints in your Gemfile to...
...Using Capybara 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)
...sure the datepicker is loaded before interacting with it See also Fixing flaky E2E tests
Environment Adapter Jobs Run In Worker Needed? development :async Rails server process No test :test Not executed (stored) No production :solid_queue Separate worker Yes (bin/jobs) Development (:async)
SolidQueue::FailedExecution.last&.error # Find specific job SolidQueue::Job.where(class_name: 'HelloJob').last Test (:test) Jobs are not executed and only stored for assertions. For system tests you can...
...KB or Zousan. You can even polyfill Promise with jQuery itself using 339 bytes. Testing async code We want to test this code: whenLoaded = new Promise(function(resolve, reject) { $(resolve...
...function foo() { } function callFooWhenLoaded() { whenLoaded.then(foo) } This test fails: describe('callFooWhenLoaded()', function() { it('calls foo()', function() { spyOn(window, 'foo') callFooWhenLoaded() expect(foo).toHaveBeenCalled() }) }) The test fails since we're expecting...
...and show a Google map centered around it Now write an E2E feature that tests that the map shows the correct location. Hints The purpose of this lesson to learn...
...should expose an API that lets you query the current map position from your test. Your test can use evaluate_script(...) to talk with that JavaScript. Note Adding leaflet to...
...has the line gem 'rails', '~>5.2'). I also experienced that doing upgrades per group (test, development) are easier to do. Thus --groups might also be helpful. $ bundle outdated --strict --groups...
...newest 5.2.6, installed 5.2.4.6) ... ===== Group "development" ===== * binding_of_caller (newest 1.0.0, installed 0.8.0) * parallel_tests (newest 3.7.3, installed 2.32.0) * query_diet (newest 0.7.0, installed 0.6.2) * spring (newest 2.1.1, installed...
...not part of the same network. Maybe you want to use your phone to test a web page, but are only in a guest WiFi. In the past, we often...
...local machine on port 3000. This can also be useful if you need to test with TLS, without having to jump through the hoops of creating some self-signed TLS...
...work across all revisions that you will be bisecting. If you're referencing a test file that's under version control, make sure you always run the correct test.There are...
...a commit between the given good and bad commits. You could then run a test (*) revealing the problem or inspect the issue manually. Keep in mind that you may need...
...you are done bisecting you can go back with git bisect reset (*) Such a test would need to live outside the repository as you are constantly switching your working directory...
...on VCR and WebMock to prevent any real network connection when running our unit tests. This is not entirely true: They are both limited to a set of HTTP libraries...
...OpenURI#open_uri are not mocked and will trigger real network requests even in tests. This might bite you e.g. in older versions of CarrierWave with remote file URLs.
We use Selenium WebDriver integrated with Cucumber/Capybara for full-stack integration testing. Try and use it Your forked MovieDB should already include a feature that uses a real browser. Add...
...the @javascript tag to your other features to test it yourself. When you run your cucumber feature now with NO_HEADLESS=1 geordi cucumber, you should see a browser opening...
CarrierWave comes with some RSpec matchers which will make testing more comfortable. Let's say you have an Uploader like this: class MyUploader < CarrierWave::Uploader::Base include CarrierWave::MiniMagick
...a class Movie with an attribute poster. In your spec file, you can add tests to check the dimensions of the several versions by writing RSpec.describe Movie, type: :model do...
1) first expectation failed 2) second expectation failed As you can see, the test is not being interrupted by the first two falsy expectations, the third expectation passed without...
This can be handy if you are testing for multiple values, which map to one context, e. g. mail components, in order to provide better readability of your...
...applications that are either old or abandoned by a different team earlier: Add E2E tests for the happy path. Other than unit tests, E2E tests will not break when we...
...refactor later. Always add tests on whatever we work on. When you work on something, improve that part of the code. Make sure setup for a new developer is as...
...poster as a file attachment to the e-mail? Can you write a RSpec test for this? In the lesson Form Models we said that we don't like to...
...method like :smtp or :sendmail which can be different for each environment. For the test environment the delivery method is set to :test, which means that new e-mails are...
...T06:22:17.484221 #2698200] INFO -- : [4cdad7a4-8617-4bc9-84e9-c40364eea2e4] test I, [2024-01-21T06:22:17.484221 #2698200] INFO -- : [4cdad7a4-8617-4bc9-84e9-c40364eea2e4] more
...T06:22:17.484221 #2698200] INFO -- : [6e047fb3-05df-4df7-808e-efa9fcd05f87] test I, [2024-01-21T06:22:17.484221 #2698200] INFO -- : [6e047fb3-05df-4df7-808e-efa9fcd05f87] more
...server error, the exception that caused the error will still be raised within the test so as to provide a useful stack trace and a good debugging experience.
...previous default behavior, value false) Using the new default needs to change a RSpec test like this: Before it 'raises an exception if the page could not be found' do...