Say I have a file containing name of test files to run tests from and It can contain specific test names too. If test file contains that specific test, run only that test from the file containing the test and run all tests from other test files.
I use Codebuild to run tests for our application but Codebuild does not provide a way to run only specific tests. So I am replacing bin/rails test command on codebuild with our custom rake task. That rake task will check for a file in our system containing list of tests to run and If it finds the file it run only those tests other normal bin/rails test
You could copy how rails is already defining their tasks like test:system here:
namespace :test do
desc "Run tests from file"
task from_file: "test:prepare" do
$: << "test"
Rails::TestUnit::Runner.rake_run(
File.read(Rails.root.join("tests_to_run.txt")).lines.map(&:chomp)
)
end
end
$ bundle exec rails test:from_file
To run a single test in Rails, we normally do:
rails test TEST=test/system/invitation_test.rb
But that doesn't work with system tests. Neither do this work:
rails test:system TEST=test/system/invitation_test.rb
With both those commandos above, all system tests (files) are run.
So my question is, how can I run a single system test?
As a side note, to run (all) system tests in Rails, you need to append :system to test.
rails test:system
While rails test doesn't seem to work if you want to run your system tests (you need to append test with :system), if you only want to run a single test it does seem to work:
rails test test/system/my_little_test.rb
I have to type
bundle exec rspec spec lib/crucible_kit/spec
every time I want to run all 700 of my rspec tests for my rails application. Is there anyway I could shorten down this to just typing "rr" to run all tests?
If so, where would I put this file in my rails application? And would I be able to push it to git branch so my teammates can use it?
Enter the code below in your command-line.
alias rr="bundle exec rspec"
It will be appended to this file ~/.bash_rc
I'm using Minitest with Rails.
How do I get it to exit on the first failure if I'm running a bunch of tests? I want this to happen when I'm writing the tests because it's a waste of time for later tests to run after the failed one.
I've just found this answer while searching for the solution, but at least in Rails 5.1 you have one option:
rails test -h Usage: bin/rails test [options] [files or directories]
You can run a single test by appending a line number to a filename:
bin/rails test test/models/user_test.rb:27
You can run multiple files and directories at the same time:
bin/rails test test/controllers test/integration/login_test.rb
By default test failures and errors are reported inline during a run.
Rails options:
-w, --warnings Run with Ruby warnings enabled
-e, --environment Run tests in the ENV environment
-b, --backtrace Show the complete backtrace
-d, --defer-output Output test failures and errors after the test run
-f, --fail-fast Abort test run on first failure or error
-c, --[no-]color Enable color in the output
So you just just need to run rails test -f
You can probably use the minitest-fail-fast gem. You may also modify the Minitest reporters engine to exit after reporting a failure.
How can I run a single test from a Rails test suite?
rake test ANYTHING seems to not help.
NOTE: This doesn't run the test via rake. So any code you have in Rakefile will NOT get executed.
To run a single test, use the following command from your rails project's main directory:
ruby -I test test/unit/my_model_test.rb -n test_name
This runs a single test named "name", defined in the MyModelTest class in the specified file. The test_name is formed by taking the test name, prepending it with the word "test", then separating the words with underscores. For example:
class MyModelTest < ActiveSupport::TestCase
test 'valid with good attributes' do
# do whatever you do
end
test 'invalid with bad attributes' do
# do whatever you do
end
end
You can run both tests via:
ruby -I test test/unit/my_model_test.rb
and just the second test via
ruby -I test test/unit/my_model_test.rb -n test_invalid_with_bad_attributes
Run a test file:
rake test TEST=tests/functional/accounts_test.rb
Run a single test in a test file:
rake test TEST=tests/functional/accounts_test.rb TESTOPTS="-n /paid accounts/"
(From #Puhlze 's comment.)
For rails 5:
rails test test/models/my_model.rb
Thanks to #James, the answer seems to be:
rails test test/models/my_model.rb:22
Assuming 22 is the line number of the given test. According to rails help:
$ rails test --help
You can run a single test by appending a line number to a filename:
bin/rails test test/models/user_test.rb:27
Also, please note that your test should inherit from ActionDispatch::IntegrationTest for this to work (That was my mistake):
class NexApiTest < ActionDispatch::IntegrationTest
.
.
.
Rails 5
I used this way to run single test file (all the tests in one file)
rails test -n /TopicsControllerTest/ -v
Another option is to use the line number (which is printed below a failing test):
rails test test/model/my_model.rb:15
In my situation for rake only works TESTOPTS="-n='/your_test_name/'":
bundle exec rake test TEST=test/system/example_test.rb TESTOPTS="-n='/your_test_name/'"
To run a single test in the actual Rails suite:
bundle exec ruby -I"railties/test" actionpack/test/template/form_options_helper_test.rb
That was a silly midnight question of mine. Rails kindly prints the command it is executing upon rake test. The rest is a cut and paste exercise.
~/projects/rails/actionpack (my2.3.4)$ ruby -I"lib:test" "/usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb" "test/controller/base_test.rb"
The best way is to look directly into the guides: http://guides.rubyonrails.org/contributing_to_ruby_on_rails.html#running-tests
cd actionmailer
bundle exec ruby -w -Itest test/mail_layout_test.rb -n test_explicit_class_layout
If you want to run a single test, you can just run them as a regular Ruby script
ruby actionmailer/test/mail_layout_test.rb
You can also run a whole suite (eg. ActiveRecord or ActionMailer) by cd-ing into the directory and running rake test inside there.
To re-run a test that just failed, copy-n-paste the failed test name into
rails test -n [test-name]
EXAMPLE
When your test suite reports this:
> rails test
...
Error:
PlayersControllerTest#test_should_show_player:
ActionView::Template::Error: no implicit conversion from nil to integer
you rerun the failing test with this:
rails test -n PlayersControllerTest#test_should_show_player
If rake is running MiniTest, the option is --name instead of -n.
rake test TEST=test/unit/progress_test.rb TESTOPTS="--name=testCreate"
First, access the folder of the lib you want to test(this is important) and then run:
~/Projects/rails/actionview (master)$ ruby -I test test/template/number_helper_test.rb
Rails folder
bundle install
bundle exec ruby -I"activerecord/test" activerecord/test/cases/relation/where_test.rb
Note you need to load appropriate folder: "activerecord/test" (where you have test)