brew/Library/Homebrew/test/options_spec.rb

# frozen_string_literal: true

require "options"

RSpec.describe Options do
  subject(:options) { described_class.new }

  it "removes duplicate options" do
    options << Option.new("foo")
    options << Option.new("foo")
    expect(options).to include("--foo")
    expect(options.count).to eq(1)
  end

  it "preserves existing member when adding a duplicate" do
    a = Option.new("foo", "bar")
    b = Option.new("foo", "qux")
    options << a << b
    expect(options.count).to eq(1)
    expect(options.first).to be(a)
    expect(options.first.description).to eq(a.description)
  end

  specify "#include?" do
    options << Option.new("foo")
    expect(options).to include("--foo")
    expect(options).to include("foo")
    expect(options).to include(Option.new("foo"))
  end

  describe "#+" do
    it "returns options" do
      expect(options + described_class.new).to be_an_instance_of(described_class)
    end
  end

  describe "#-" do
    it "returns options" do
      expect(options - described_class.new).to be_an_instance_of(described_class)
    end
  end

  specify "#&" do
    foo, bar, baz = %w[foo bar baz].map { |o| Option.new(o) }
    other_options = described_class.new << foo << bar
    options << foo << baz
    expect((options & other_options).to_a).to eq([foo])
  end

  specify "#|" do
    foo, bar, baz = %w[foo bar baz].map { |o| Option.new(o) }
    other_options = described_class.new << foo << bar
    options << foo << baz
    expect((options | other_options).sort).to eq([foo, bar, baz].sort)
  end

  specify "#*" do
    options << Option.new("aa") << Option.new("bb") << Option.new("cc")
    expect((options * "XX").split("XX").sort).to eq(%w[--aa --bb --cc])
  end

  describe "<<" do
    it "returns itself" do
      expect(options << Option.new("foo")).to be options
    end
  end

  specify "#as_flags" do
    options << Option.new("foo")
    expect(options.as_flags).to eq(%w[--foo])
  end

  specify "#to_a" do
    option = Option.new("foo")
    options << option
    expect(options.to_a).to eq([option])
  end

  specify "#to_ary" do
    option = Option.new("foo")
    options << option
    expect(options.to_ary).to eq([option])
  end

  specify "::create_with_array" do
    array = %w[--foo --bar]
    option1 = Option.new("foo")
    option2 = Option.new("bar")
    expect(described_class.create(array).sort).to eq([option1, option2].sort)
  end

  specify "#to_s" do
    expect(options.to_s).to eq("")
    options << Option.new("first")
    expect(options.to_s).to eq("--first")
    options << Option.new("second")
    expect(options.to_s).to eq("--first --second")
  end

  specify "#inspect" do
    expect(options.inspect).to eq("#<Options: []>")
    options << Option.new("foo")
    expect(options.inspect).to eq("#<Options: [#<Option: \"--foo\">]>")
  end
end