How to run a single RSpec test

Question

I have the following file    spec controllers groups controller spec rb   What command in terminal do I use to run just that spec and in what directory do I run the command   My gem file     Test ENVIRONMENT GEMS group  development   test do     gem  autotest      gem  rspec-rails      gt  2 4      gem  cucumber-rails     gt  0 3 2      gem  webrat     gt  0 7 2      gem  factory girl rails      gem  email spec  end   Spec file   require  spec helper   describe GroupsController do   include Devise  TestHelpers    describe  GET yourgroups  do     it  should be successful and return 3 items  do        Rails logger info  HAIL MARRY         get  yourgroups   format   gt   json       response should be success       body   JSON parse response body        body should have 3  items    user1 has 3 permissions to 3 groups     end   end end

User · Answer

With Rake   rake spec SPEC path to spec rb    Credit goes to this answer   Go vote him up    EDIT  thanks to  cirosantilli   To run one specific scenario within the spec  you have to supply a regex pattern match that matches the description   rake spec SPEC path to spec rb             SPEC OPTS  -e   should be successful and return 3 items

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Given you re on a rails 3 project with rspec 2  From the rails root directory      bundle exec rspec spec controllers groups controller spec rb    should definitely work   i got tired of typing that so i created an alias to shorten  bundle exec rspec  to  bersp    bundle exec  is so that it loads the exact gem environment specified in your gem file  http   gembundler com   Rspec2 switched from the  spec  command to the  rspec  command

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Run the commands from your project s root directory      run all specs in the project s spec folder bundle exec rspec     run specs nested under a directory  like controllers bundle exec rspec spec controllers    run a single test file bundle exec rspec spec controllers groups controller spec rb    run a test or subset of tests within a file   e g   if the  it    describe   or  context  block you wish to test   starts at line 45  run  bundle exec rspec spec controllers groups controller spec rb 45

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Another common mistake is to still have or have upgraded an older Rails app to Rails 5  and be putting require  spec helper  at the top of each test file  This should changed to require  rails helper   If you are seeing different behavior between the rake task  rake spec  and when you run a single spec  rspec path to spec rb   this is a common reason  the best solution is to   1  make sure you are using require  rails helper  at the top of each of your spec files     not the older-style require  spec helper  2  use the rake spec SPEC path to spec rb syntax  the older-style rspec path to spec rb I think should be considered out-of-vogue by the community at this time in 2020  but of course you will get it to work  other considerations aside

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Usually I do   rspec   spec controllers groups controller spec rb 42   Where 42 represents the line of the test I want to run   EDIT1   You could also use tags  See here    EDIT 2   Try   bundle exec rspec   spec controllers groups controller spec rb 42

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There are many options   rspec spec                             All specs rspec spec models                      All specs in the models directory rspec spec models a model spec rb      All specs in the some model model spec rspec spec models a model spec rb nn   Run the spec that includes line  nn  rspec -e text from a test              Runs specs that match the text rspec spec --tag focus                 Runs specs that have  focus   gt  true rspec spec --tag focus special         Run specs that have  focus   gt  special rspec spec --tag focus  skip           Run tests except those with  focus   gt  true

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You can do something like this    rspec spec features controller spec file name rb  rspec spec features controller name rb          run all the specs in this controller

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For model  it will run case on line number 5 only  bundle exec rspec spec models user spec rb 5   For controller   it will run case on line number 5 only  bundle exec rspec spec controllers users controller spec rb 5   For signal model or controller remove line number from above  To run case on all models  bundle exec rspec spec models   To run case on all controller  bundle exec rspec spec controllers   To run all cases   bundle exec rspec

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You can pass a regex to the spec command which will only run it blocks matching the name you supply   spec path to my spec rb -e  should be the correct answer    2019 Update  Rspec2 switched from the  spec  command to the  rspec  command

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starting with rspec 2 you can use the following     in spec spec helper rb RSpec configure do  config    config filter run  focus   gt  true   config run all when everything filtered   true end    in spec any spec rb describe  something  do   it  does something    focus   gt  true do              end end

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Not sure how long this has bee available but there is an Rspec configuration for run filtering - so now you can add this to your spec helper rb   RSpec configure do  config    config filter run when matching  focus end   And then add a focus tag to the it  context or describe to run only that block   it  runs a test    focus do      test code end   RSpec documentation   https   www rubydoc info github rspec rspec-core RSpec Core Configuration filter run when matching-instance method

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apneadiving answer is a neat way of solving this  However  now we have a new method in Rspec 3 3  We can simply run rspec spec unit baseball spec rb  context  it  instead of using a line number  Taken from here   RSpec 3 3 introduces a new way to identify examples      For example  this command    rspec spec unit baseball spec rb 1 2 1 4     would run the 2nd and 4th example or group defined under the 1st top-level group defined in spec unit baseball spec rb   So instead of doing rspec spec unit baseball spec rb 42 where it  test in line 42  is the first test  we can simply do rspec spec unit baseball spec rb 1 1  or rspec spec unit baseball spec rb 1 1 1  depending on how nested the test case is

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You can use   rspec spec controllers groups controller spec rb  lt line number gt    line number should be line number of  describe  or  it  lines so that it will run tests present in that particular block  instead it will execute all the lines next to line number   also you can create block with custom name and then can execute those blocks only

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For single example of spec file  you need to add line number at the last   For Example rspec spec controllers api v1 card list controller spec rb 35  For single file you can specify your file path  For Example rspec spec controllers api v1 card list controller spec rb  For Whole Rspec Example in spec folder  you can try with this command bundle exec rspec spec

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I use this guard gem to auto-run my test  It execute test after create or update operations on test file    https   github com guard guard-test  or   usually you can run using following command   rspec spec controllers groups controller spec rb

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My preferred method for running specific tests is slightly different - I added the lines    RSpec configure do  config      config filter run  focus   gt  true     config run all when everything filtered   true   end   To my spec helper file   Now  whenever I want to run one specific test  or context  or spec   I can simply add the tag  focus  to it  and run my test as normal - only the focused test s  will run  If I remove all the focus tags  the run all when everything filtered kicks in and runs all the tests as normal   It s not quite as quick and easy as the command line options - it does require you to edit the file for the test you want to run  But it gives you a lot more control  I feel

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In rails 5   I used this way to run single test file all the tests in one file   rails test -n  TopicsControllerTest  -v   Class name can be used to match to the desired file TopicsControllerTest  My class class TopicsControllerTest  lt  ActionDispatch  IntegrationTest  Output       If You want you can tweak the regex to match to single test method   TopicsControllerTest test Should delete    rails test -n  TopicsControllerTest test Should delete  -v

[ruby-on-rails] How to run a single RSpec test?

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