brew/Library/Homebrew/test/cask/cli/cat_spec.rb

require_relative "shared_examples/requires_cask_token"
require_relative "shared_examples/invalid_option"

describe Hbc::CLI::Cat, :cask do
  it_behaves_like "a command that requires a Cask token"
  it_behaves_like "a command that handles invalid options"

  describe "given a basic Cask" do
    let(:basic_cask_content) {
      <<~RUBY
        cask 'basic-cask' do
          version '1.2.3'
          sha256 '8c62a2b791cf5f0da6066a0a4b6e85f62949cd60975da062df44adf887f4370b'

          url 'http://example.com/TestCask.dmg'
          homepage 'http://example.com/'

          app 'TestCask.app'
        end
      RUBY
    }

    it "displays the Cask file content about the specified Cask" do
      expect {
        described_class.run("basic-cask")
      }.to output(basic_cask_content).to_stdout
    end

    it "can display multiple Casks" do
      expect {
        described_class.run("basic-cask", "basic-cask")
      }.to output(basic_cask_content * 2).to_stdout
    end
  end

  it "raises an exception when the Cask does not exist" do
    expect { described_class.run("notacask") }
      .to raise_error(Hbc::CaskUnavailableError, /is unavailable/)
  end
end