Generate test coverage reports for Xcode projects & hook it into CI.

Projects that use Slather

Project	Coverage
Parsimmon
VENCore
DAZABTest
TBStateMachine

Installation

Add this line to your application's Gemfile:

gem 'slather'

And then execute:

$ bundle

Usage

Apple drastically improved the support for code coverage in Xcode 7, including dedicated UI for enabling it. You can now setup your project for test coverage inside the scheme editor, by ticking the "Gather coverage data" checkbox:

To verify you're ready to generate test coverage, run your test suite on your project, and then run:

$ slather coverage -s path/to/project.xcodeproj

Previous versions of Xcode

Set up your project for test coverage:

$ slather setup path/to/project.xcodeproj

This will enable the Generate Test Coverage and Instrument Program Flow flags for your project.

Usage with Codecov

Login to Codecov (no need to activate a repository, this happens automatically). Right now, slather supports Codecov via all supported CI providers listed here.

Make a .slather.yml file:

# .slather.yml

coverage_service: cobertura_xml
xcodeproj: path/to/project.xcodeproj
source_directory: path/to/sources/to/include
output_directory: path/to/xml_report
ignore:
  - ExamplePodCode/*
  - ProjectTestsGroup/*

And then in your .travis.yml, circle.yml (or after test commands in other CI providers), call slather after a successful build:

# .travis.yml

before_install: rvm use $RVM_RUBY_VERSION
install: bundle install --without=documentation --path ../travis_bundle_dir
after_success: 
  - slather
  - bash <(curl -s https://codecov.io/bash) -f path/to/xml_report/cobertura.xml

# circle.yml

test:
  post:
    - bundle exec slather
    - bash <(curl -s https://codecov.io/bash)

Private repo? Add -t :uuid-repo-token to the codecov uploader. Read more about uploading report to Codecov here

Usage with Coveralls

Login to Coveralls and enable your repository. Right now, slather supports Coveralls via Travis CI and CircleCI.

Make a .slather.yml file:

# .slather.yml

coverage_service: coveralls
xcodeproj: path/to/project.xcodeproj
ignore:
  - ExamplePodCode/*
  - ProjectTestsGroup/*

And then in your .travis.yml or circle.yml, call slather after a successful build:

# .travis.yml

before_install: rvm use $RVM_RUBY_VERSION
install: bundle install --without=documentation --path ../travis_bundle_dir
after_success: slather

# circle.yml

test:
  post:
    - bundle exec slather

Usage with Travis CI Pro

To use Coveralls with Travis CI Pro (for private repos), add following lines along with other settings to .slather.yml:

# .slather.yml

ci_service: travis_pro
coverage_access_token: <YOUR ACCESS TOKEN>

The coverage token can be found at Coveralls repo page. Or it can be passed in via the COVERAGE_ACCESS_TOKEN environment var.

Cobertura

To create a Cobertura XML report set cobertura_xml as coverage service inside your .slather.yml. Optionally you can define an output directory for the XML report:

# .slather.yml

coverage_service: cobertura_xml
xcodeproj: path/to/project.xcodeproj
source_directory: path/to/sources/to/include
output_directory: path/to/xml_report
ignore:
  - ExamplePodCode/*
  - ProjectTestsGroup/*

Or use the command line options --cobertura-xml or -x and --output-directory:

$ slather coverage -x --output-directory path/to/xml_report

Static HTML

To create a report as static html pages, use the command line options --html:

$ slather coverage --html path/to/project.xcodeproj

This will make a directory named html in your root directory (unless --output-directory is specified) and will generate all the reports as static html pages inside the directory. It will print out the report's path by default, but you can also specify --show flag to open it in your browser automatically.

TeamCity Reporting

To report the coverage statistics to TeamCity:

$ slather coverage --teamcity -s

Coverage for code included via CocoaPods

If you're trying to compute the coverage of code that has been included via CocoaPods, you will need to tell CocoaPods to use the Slather plugin by adding the following to your Podfile.

plugin 'slather'

You will also need to tell Slather where to find the source files for your Pod.

# .slather.yml

source_directory: Pods/AFNetworking

Custom Build Directory

Slather will look for the test coverage files in DerivedData by default. If you send build output to a custom location, like this, then you should also set the build_directory property in .slather.yml

Contributing

We’d love to see your ideas for improving this library! The best way to contribute is by submitting a pull request. We’ll do our best to respond to your patch as soon as possible. You can also submit a new GitHub issue if you find bugs or have questions.

Please make sure to follow our general coding style and add test coverage for new features!

Contributors

• @tpoulos, the perfect logo.
• @ayanonagon and @kylef, feedback and testing.
• @jhersh, CircleCI support.
• @tarbrain, Cobertura support and bugfixing.
• @ikhsan, html support.