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Diffstat (limited to 'guides/source/testing.md')
| -rw-r--r-- | guides/source/testing.md | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/guides/source/testing.md b/guides/source/testing.md index c0394f927e..7abf3af187 100644 --- a/guides/source/testing.md +++ b/guides/source/testing.md @@ -350,6 +350,8 @@ Rails adds some custom assertions of its own to the `minitest` framework: | --------------------------------------------------------------------------------- | ------- | | [`assert_difference(expressions, difference = 1, message = nil) {...}`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_difference) | Test numeric difference between the return value of an expression as a result of what is evaluated in the yielded block.| | [`assert_no_difference(expressions, message = nil, &block)`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_no_difference) | Asserts that the numeric result of evaluating an expression is not changed before and after invoking the passed in block.| +| [`assert_changes(expressions, message = nil, from:, to:, &block)`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_changes) | Test that the result of evaluating an expression is changed after invoking the passed in block.| +| [`assert_no_changes(expressions, message = nil, &block)`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_no_changes) | Test the result of evaluating an expression is not changed after invoking the passed in block.| | [`assert_nothing_raised { block }`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_nothing_raised) | Ensures that the given block doesn't raise any exceptions.| | [`assert_recognizes(expected_options, path, extras={}, message=nil)`](http://api.rubyonrails.org/classes/ActionDispatch/Assertions/RoutingAssertions.html#method-i-assert_recognizes) | Asserts that the routing of the given path was handled correctly and that the parsed options (given in the expected_options hash) match path. Basically, it asserts that Rails recognizes the route given by expected_options.| | [`assert_generates(expected_path, options, defaults={}, extras = {}, message=nil)`](http://api.rubyonrails.org/classes/ActionDispatch/Assertions/RoutingAssertions.html#method-i-assert_generates) | Asserts that the provided options can be used to generate the provided path. This is the inverse of assert_recognizes. The extras parameter is used to tell the request the names and values of additional request parameters that would be in a query string. The message parameter allows you to specify a custom error message for assertion failures.| @@ -600,11 +602,8 @@ Model tests don't have their own superclass like `ActionMailer::TestCase` instea System Testing -------------- -System tests are full-browser tests that can be used to test your application's -JavaScript and user experience. System tests use Capybara as a base. - -System tests allow for running tests in either a real browser or a headless -driver for testing full user interactions with your application. +System tests allow you to test user interactions with your application, running tests +in either a real or a headless browser. System tests uses Capybara under the hood. For creating Rails system tests, you use the `test/system` directory in your application. Rails provides a generator to create a system test skeleton for you. @@ -658,8 +657,9 @@ end The driver name is a required argument for `driven_by`. The optional arguments that can be passed to `driven_by` are `:using` for the browser (this will only -be used by Selenium), and `:screen_size` to change the size of the screen for -screenshots. +be used by Selenium), `:screen_size` to change the size of the screen for +screenshots, and `:options` which can be used to set options supported by the +driver. ```ruby require "test_helper" @@ -669,8 +669,9 @@ class ApplicationSystemTestCase < ActionDispatch::SystemTestCase end ``` -If your Capybara configuration requires more setup than provided by Rails, all -of that configuration can be put into the `application_system_test_case.rb` file. +If your Capybara configuration requires more setup than provided by Rails, this +additional configuration could be added into the `application_system_test_case.rb` +file. Please see [Capybara's documentation](https://github.com/teamcapybara/capybara#setup) for additional settings. @@ -693,9 +694,9 @@ take a screenshot of the browser. Now we're going to add a system test to our blog application. We'll demonstrate writing a system test by visiting the index page and creating a new blog article. -If you used the scaffold generator, a system test skeleton is automatically -created for you. If you did not use the generator start by creating a system -test skeleton. +If you used the scaffold generator, a system test skeleton was automatically +created for you. If you didn't use the scaffold generator, start by creating a +system test skeleton. ```bash $ bin/rails generate system_test articles |