brew/Library/Homebrew/test/cask/cmd/doctor_spec.rb

require_relative "shared_examples/invalid_option"

describe Hbc::Cmd::Doctor, :cask do
  it_behaves_like "a command that handles invalid options"

  it "displays some nice info about the environment" do
    expect {
      described_class.run
    }.to output(/^==> Homebrew Version/).to_stdout
  end

  it "raises an exception when arguments are given" do
    expect {
      described_class.run("argument")
    }.to raise_error(ArgumentError)
  end
end