![Slather Logo](https://raw.githubusercontent.com/venmo/slather/master/docs/logo.jpg)

[![Gem Version](https://badge.fury.io/rb/slather.svg)](http://badge.fury.io/rb/slather)
[![Build Status](https://travis-ci.org/venmo/slather.svg?branch=master)](https://travis-ci.org/venmo/slather)

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

### Projects that use Slather

| Project | Coverage |
| ------- |:--------:|
| [Parsimmon](https://github.com/ayanonagon/Parsimmon) | [![Parsimmon Coverage](https://coveralls.io/repos/ayanonagon/Parsimmon/badge.png?branch=master)](https://coveralls.io/r/ayanonagon/Parsimmon?branch=master) |
| [VENCore](https://github.com/venmo/VENCore) | [![VENCore Coverage](https://coveralls.io/repos/venmo/VENCore/badge.png?branch=master)](https://coveralls.io/r/venmo/VENCore?branch=master) |
| [CGFloatType](https://github.com/kylef/CGFloatType) | [![CGFloatType Coverage](https://coveralls.io/repos/kylef/CGFloatType/badge.png?branch=master)](https://coveralls.io/r/kylef/CGFloatType?branch=master) |

## Installation

Add this line to your application's Gemfile:

```ruby
gem 'slather'
```

And then execute:

```sh
$ bundle
```

## Usage

Setup your project for test coverage:

```sh
$ slather setup path/to/project.xcodeproj
```

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


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

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

### Coveralls

Login to https://coveralls.io/ and enable your repository. Right now, `slather` only supports coveralls via Travis CI.

Make a `.slather.yml` file:

```yml
# .slather.yml

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

And then in your `.travis.yml`, call `slather` after a successful_build

```yml
# .travis.yml

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

### 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 slather where to find the source files for
your Pod.

```yml
# .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](https://github.com/erikdoe/ocmock/blob/master/Tools/travis.sh#L12), 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](https://github.com/venmo/slather/issues/new) if you find bugs or have questions. :octocat:

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

## Contributors

* [@tpoulos](https://github.com/tpoulos), the perfect logo.
* [@ayanonagon](https://github.com/ayanonagon) and [@kylef](https://github.com/kylef), feedback and testing.