How to run a single test from a rails test suite?

Question

How can I run a single test from a rails test suite?

rake test ANYTHING seems to not help.

Answer 1

In rails 5,

I used this way to run single test file(all the tests in one file)

rails test -n /TopicsControllerTest/ -v

look here https://stackoverflow.com/a/41183694/3626659

Answer 2

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)

Answer 3

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.)

Answer 4

In my situation for rake only works TESTOPTS="-n='/sample/'":

bundle exec rake test TEST=test/system/example_test.rb TESTOPTS="-n='/sample/'"

Answer 5

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 

Answer 6

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
.
.
.