This lab guides you through setting up a conventional looking Ruby application with multiple directories.
The lib/ directory should be where all of your application's code lives: methods, classes, etc.
We have two simple classes in the files bar.rb and foo.rb. They should live in lib/.
The config/ directory houses code that, as you can guess, configures your app. One file that often goes in here is...
Think of environment.rb as a manifest for all of your files. It should require all of your executable code (like what's in lib/). In turn, other code that executes it should require environment.rb; it's easier and cleaner to require just this one file everything then continuously updating whenever you add a new class.
Below we'll talk about what should be requiring environment.rb.
To pass the tests, make an environment.rb file and have it require the code in lib/.
The bin/ directory holds files that work to execute your code. Where you code is defined should always be separate from where it's executed.
Create a file called run.rb which runs the Foo class. Be sure that it requires environment.rb, so that it knows about Foo and Bar.
You should already be familiar with what's going on in spec/, but let's dive in to what's happening within this folder a bit more. File(s) that hold tests end in "_spec" (like file_structure_spec.rb). Note that this is requiring a file called spec_helper.rb, which does two things: holds configuration settings that apply to any spec file that requires it, and requires environment.rb, so it knows about the code that its testing.
Get the tests to pass!
.rspec is a top-level file that has has settings for the spec executable rspec. Experiment with removing the --color line and running rspec!
The Gemfile is the manifest for all of a program's dependencies, aka, gems.
Running bundle init creates a new Gemfile and running bundle install creates a Gemfile.lock file which locks in gem versions for your program. If you ever need to update a gem's version so it's reflected in the lock file, run bundle update.
Get the tests to pass!