We're going to start by installing Homebrew which will make installing everything else we need much easier.
Open a Terminal window and run the following commands:
1 2 xcode-select --install /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Now we can easily install Ruby with Homebrew using the following:
1 brew install ruby
Now we'll use Bundler to initialize a project for us.
1 2 3 gem install bundler bundle gem ubyray --no-coc --no-mit cd ubyray
When building software you will frequently use libraries and tools from a third party. Since they have their own development lifecycles and versions we want to be able to define a specific version of that dependency to use in our software. We want to do that with a tool and a file.
For Ruby we'll use the tool Bundler and our dependencies will be defined in the file
1 # We already installed Bundler above
We're going to use the testing library RSpec to write our tests.
Edit the file
Gemfile and add RSpec as a testing dependency:
1 spec.add_development_dependency 'rspec'
Then we retrieve RSpec by running
Finally we initialize RSpec by running
Create the file
spec/piglatin_spec.rb with the following contents:
1 2 3 4 5 6 7 describe Piglatin do context "word starting with a vowel" do it "translates the word" do expect(Piglatin.translate_word "apple").to eq "appleyay" end end end
Then run the test with the command
rspec to see the results:
1 ...spec/piglatin_spec.rb:1:in `<top (required)>': uninitialized constant Piglatin (NameError)