Ruby on Rails: Cucumber: how do I Rake a single feature?

Question

Reason why I want to run them individually, is because I need to have them individually set up in my Rake file, because, My Java Heap Space fills up when I run them all together

Solution 1

To answer the Rake question directly, you can use:

rake FEATURE=features/adding_products.feature cucumber

but the Using Rake wiki page advises against using rake for anything but on a CI server because it's slower to start. Just use the cucumber command line instead, i.e.:

cucumber features/adding_products.feature

or, if you must:

bundle exec cucumber features/adding_products.feature

Solution 2

The correct way is to run it using the cucumber executable if you're using Rails 2, or bundle exec cucumber if you're using Rails 3 (and thus Bundler).

To run a specific feature:

[command] features/signing_in.feature

To run a specific scenario from that feature:

[command] features/signing_in.feature:6

The line number can be any line inside that feature, but is usually the first line.

If you run rake cucumber:ok and some scenarios fail, at the bottom of the output you will see something like this:

cucumber features/sigining_in.feature:6 # Signing in via form

You can triple-click this line and paste it into your terminal to just run that scenario.

Solution 3

The rake did not worked for me. Just replaced the rake with bundle exec, and it worked. below is a sample.

bundle exec cucumber features/users/signup.feature --require features

Solution 4

I'm not sure cucumber's tag feature was available when the question asked, but i prefer setting @active tag

  @active
  Feature ..

or

  @active
  Scenario ..

and

  cucumber --tags @active

Solution 5

I like the short command $ cucumber -n.

If:

Feature: Manage Contents
  In order to manage instances from custom content types
  …

Then:

$ cucumber -n "Manage Contents"

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Comments

[uKolka]

Java Heap Space? How does Java figure into this if you're using a Rake/Rails/Cucumber stack?

[ap2]

running on jruby, i'm guessing

[NullVoxPopuli]

not directly. I'm using some libraries along with cucumber that use jruby though. I think CapyBara is one. =\

[Bastien]

To run a single scenario, you can also type this: cucumber --name "Signing in via form"

[sivabudh]

For me, this works cucumber -r features features/adding_products.feature

[Indika K]

Worked for me too. If I omit the --require features cucumber failed to identify the step definitions.

[AMIC MING]

for new version, you can do this too - bundle exec cucumber features/adding_products.feature

[comandante N]

right, had the same problem. the alternative apparently is to hard code that --require features replacig this line in config/cucumber.yml std_opts = "--format #{ENV['CUCUMBER_FORMAT'] || 'pretty'} --strict --tags ~@wip" with std_opts = "--format #{ENV['CUCUMBER_FORMAT'] || 'pretty'} --strict --tags ~@wip --require features/" see this question

[konyak]

Note: "Any feature that is located inside a sub-directory of features directory must require features [--require features]." Per github.com/cucumber/cucumber/wiki/Running-Features

[Alex Pan]

Thank you Ryan and Bastien. This should be the accepted answer.

[AMIC MING]

Good one Buddy, you are the Genius