brew/Library/Homebrew/test/cask/cli_spec.rb

describe Hbc::CLI, :cask do
  it "lists the taps for Casks that show up in two taps" do
    listing = Hbc::CLI.nice_listing(%w[
                                      caskroom/cask/adium
                                      caskroom/cask/google-chrome
                                      passcod/homebrew-cask/adium
                                    ])

    expect(listing).to eq(%w[
                            caskroom/cask/adium
                            google-chrome
                            passcod/cask/adium
                          ])
  end

  context ".process" do
    let(:noop_command) { double("CLI::Noop") }

    before do
      allow(Hbc).to receive(:init)
      allow(described_class).to receive(:lookup_command).with("noop").and_return(noop_command)
      allow(noop_command).to receive(:run)
    end

    around do |example|
      shutup { example.run }
    end

    it "passes `--version` along to the subcommand" do
      expect(described_class).to receive(:run_command).with(noop_command, "--version")
      described_class.process(%w[noop --version])
    end

    it "prints help output when subcommand receives `--help` flag" do
      expect(described_class).to receive(:run_command).with("help")
      described_class.process(%w[noop --help])
      expect(Hbc.help).to eq(true)
      Hbc.help = false
    end

    it "respects the env variable when choosing what appdir to create" do
      allow(ENV).to receive(:[])
      allow(ENV).to receive(:[]).with("HOMEBREW_CASK_OPTS").and_return("--appdir=/custom/appdir")
      expect(Hbc).to receive(:appdir=).with(Pathname.new("/custom/appdir"))
      described_class.process("noop")
    end

    it "respects the env variable when choosing a non-default Caskroom location" do
      allow(ENV).to receive(:[])
      allow(ENV).to receive(:[]).with("HOMEBREW_CASK_OPTS").and_return("--caskroom=/custom/caskdir")
      expect(Hbc).to receive(:caskroom=).with(Pathname.new("/custom/caskdir"))
      described_class.process("noop")
    end

    it "exits with a status of 1 when something goes wrong" do
      allow(described_class).to receive(:lookup_command).and_raise(Hbc::CaskError)
      expect(described_class).to receive(:exit).with(1)
      described_class.process("noop")
    end
  end
end