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

# frozen_string_literal: true

RSpec.describe Cask::CaskLoader, :cask do
  describe "::for" do
    let(:tap) { CoreCaskTap.instance }

    context "when a cask is renamed" do
      let(:old_token) { "version-newest" }
      let(:new_token) { "version-latest" }

      let(:api_casks) do
        [old_token, new_token].to_h do |token|
          hash = described_class.load(new_token).to_hash_with_variations
          json = JSON.pretty_generate(hash)
          cask_json = JSON.parse(json)

          [token, cask_json.except("token")]
        end
      end
      let(:cask_renames) do
        { old_token => new_token }
      end

      before do
        allow(Homebrew::API::Cask)
          .to receive(:all_casks)
          .and_return(api_casks)

        allow(tap).to receive(:cask_renames)
          .and_return(cask_renames)
      end

      context "when not using the API" do
        before do
          ENV["HOMEBREW_NO_INSTALL_FROM_API"] = "1"
        end

        it "warns when using the short token" do
          expect do
            expect(described_class.for("version-newest")).to be_a Cask::CaskLoader::FromPathLoader
          end.to output(/version-newest was renamed to version-latest/).to_stderr
        end

        it "warns when using the full token" do
          expect do
            expect(described_class.for("homebrew/cask/version-newest")).to be_a Cask::CaskLoader::FromPathLoader
          end.to output(/version-newest was renamed to version-latest/).to_stderr
        end
      end

      context "when using the API" do
        before do
          ENV.delete("HOMEBREW_NO_INSTALL_FROM_API")
        end

        it "warns when using the short token" do
          expect do
            expect(described_class.for("version-newest")).to be_a Cask::CaskLoader::FromAPILoader
          end.to output(/version-newest was renamed to version-latest/).to_stderr
        end

        it "warns when using the full token" do
          expect do
            expect(described_class.for("homebrew/cask/version-newest")).to be_a Cask::CaskLoader::FromAPILoader
          end.to output(/version-newest was renamed to version-latest/).to_stderr
        end
      end
    end

    context "when not using the API" do
      before do
        ENV["HOMEBREW_NO_INSTALL_FROM_API"] = "1"
      end

      context "when a cask is migrated to the default tap" do
        let(:token) { "local-caffeine" }
        let(:tap_migrations) do
          {
            token => default_tap.name,
          }
        end
        let(:old_tap) { CoreTap.instance }
        let(:default_tap) { CoreCaskTap.instance }

        before do
          (old_tap.path/"tap_migrations.json").write tap_migrations.to_json
        end

        it "does not warn when loading the short token" do
          expect do
            described_class.for(token)
          end.not_to output.to_stderr
        end

        it "does not warn when loading the full token in the default tap" do
          expect do
            described_class.for("#{default_tap}/#{token}")
          end.not_to output.to_stderr
        end

        it "warns when loading the full token in the old tap" do
          expect do
            described_class.for("#{old_tap}/#{token}")
          end.to output(%r{Cask #{old_tap}/#{token} was renamed to #{token}\.}).to_stderr
        end

        # FIXME
        # context "when there is an infinite tap migration loop" do
        #   before do
        #     (default_tap.path/"tap_migrations.json").write({
        #       token => old_tap.name,
        #     }.to_json)
        #   end
        #
        #   it "stops recursing" do
        #     expect do
        #       described_class.for("#{default_tap}/#{token}")
        #     end.not_to output.to_stderr
        #   end
        # end
      end
    end
  end
end