Collecting code coverage with SimpleCov

- [Instructor] In order to know what our coverage is … we need to use a tool which will collect it for us … while our test suite is running. … Let's dive in and start collecting code coverage data … for a ruby project, using the simple code gem. … I'm assuming that you've already followed … the setup instructions at the end of the previous video … in this chapter. … If not, you'll need to go back … and do that before following along. … Open a terminal and switch the directory … where you cloned the Sinatra project. … In here, we can run bundle exec rake test … to run the entire test suite. … There's a lot of warnings here included in the output … which we can go ahead and ignore. … So we can see here that the test suite ran … without any errors or any failures. … So next, we're going to open up the project in our text editor. … I'm using Atom. … In order to set up SimpleCov, there's two things that we … need to do first. … We need to install the gem and then we need to configure it … to collect data when we run the test suite. …