require "emoji" describe Emoji do describe "#install_badge" do subject { described_class.install_badge } before do ENV.delete("HOMEBREW_INSTALL_BADGE") end it "returns 🍺 by default" do expect(subject).to eq "🍺" end it "returns the contents of HOMEBREW_INSTALL_BADGE if set" do ENV["HOMEBREW_INSTALL_BADGE"] = "foo" expect(subject).to eq "foo" end end end