I was writing a unit test recently to test the return of a RAND() mySQL call and wanted to be able to expect one value or the other. I found out that RSpec has this ability built-in, but I’d never heard of it before.
From the RSpec documentation:
class StopLight
def color
%w[green yellow red].shuffle.first
end
end
RSpec.describe StopLight, "#color" do
let(:light) { StopLight.new }
it "is green, yellow or red" do
expect(light.color).to eq("green").or eq("yellow").or eq("red")
end
it "passes when using boolean OR | alias" do
expect(light.color).to eq("green") | eq("yellow") | eq("red")
end
end