brew/Library/Homebrew/test/bundle/cask_dumper_spec.rb

# frozen_string_literal: true

require "bundle"
require "bundle/cask_dumper"
require "cask"

RSpec.describe Homebrew::Bundle::CaskDumper do
  subject(:dumper) { described_class }

  context "when brew-cask is not installed" do
    before do
      described_class.reset!
      allow(Homebrew::Bundle).to receive(:cask_installed?).and_return(false)
    end

    it "returns empty list" do
      expect(dumper.cask_names).to be_empty
    end

    it "dumps as empty string" do
      expect(dumper.dump).to eql("")
    end
  end

  context "when there is no cask" do
    before do
      described_class.reset!
      allow(Homebrew::Bundle).to receive(:cask_installed?).and_return(true)
      allow(described_class).to receive(:`).and_return("")
    end

    it "returns empty list" do
      expect(dumper.cask_names).to be_empty
    end

    it "dumps as empty string" do
      expect(dumper.dump).to eql("")
    end

    it "doesn’t want to greedily update a non-installed cask" do
      expect(dumper.cask_is_outdated_using_greedy?("foo")).to be(false)
    end
  end

  context "when casks `foo`, `bar` and `baz` are installed, with `baz` being a formula requirement" do
    let(:foo) { instance_double(Cask::Cask, to_s: "foo", desc: nil, config: nil) }
    let(:baz) { instance_double(Cask::Cask, to_s: "baz", desc: "Software", config: nil) }
    let(:bar) do
      instance_double(
        Cask::Cask, to_s:   "bar",
                    desc:   nil,
                    config: instance_double(
                      Cask::Config,
                      explicit: {
                        fontdir:   "/Library/Fonts",
                        languages: ["zh-TW"],
                      },
                    )
      )
    end

    before do
      described_class.reset!

      allow(Homebrew::Bundle).to receive(:cask_installed?).and_return(true)
      allow(Cask::Caskroom).to receive(:casks).and_return([foo, bar, baz])
    end

    it "returns list %w[foo bar baz]" do
      expect(dumper.cask_names).to eql(%w[foo bar baz])
    end

    it "dumps as `cask 'baz'` and `cask 'foo' cask 'bar'` plus descriptions and config values" do
      expected = <<~EOS
        cask "foo"
        cask "bar", args: { fontdir: "/Library/Fonts", language: "zh-TW" }
        # Software
        cask "baz"
      EOS
      expect(dumper.dump(describe: true)).to eql(expected.chomp)
    end

    it "doesn’t want to greedily update a non-installed cask" do
      expect(dumper.cask_is_outdated_using_greedy?("qux")).to be(false)
    end

    it "wants to greedily update foo if there is an update available" do
      expect(foo).to receive(:outdated?).with(greedy: true).and_return(true)
      expect(dumper.cask_is_outdated_using_greedy?("foo")).to be(true)
    end

    it "does not want to greedily update bar if there is no update available" do
      expect(bar).to receive(:outdated?).with(greedy: true).and_return(false)
      expect(dumper.cask_is_outdated_using_greedy?("bar")).to be(false)
    end
  end

  describe "#formula_dependencies" do
    context "when the given casks don't have formula dependencies" do
      before do
        described_class.reset!
      end

      it "returns an empty array" do
        expect(dumper.formula_dependencies(["foo"])).to eql([])
      end
    end

    context "when multiple casks have the same dependency" do
      before do
        described_class.reset!
        foo = instance_double(Cask::Cask, to_s: "foo", depends_on: { formula: ["baz", "qux"] })
        bar = instance_double(Cask::Cask, to_s: "bar", depends_on: {})
        allow(Cask::Caskroom).to receive(:casks).and_return([foo, bar])
        allow(Homebrew::Bundle).to receive(:cask_installed?).and_return(true)
      end

      it "returns an array of unique formula dependencies" do
        expect(dumper.formula_dependencies(["foo", "bar"])).to eql(["baz", "qux"])
      end
    end
  end
end