path = File.expand_path("../../../../bin/guard", __FILE__)
load path

RSpec.describe GuardReloader do
  let(:config) { instance_double(described_class::Config) }

  subject { described_class.new(config) }

  let(:guard_core_path) { "/home/me/.rvm/gems/ruby-2.2.2/bin/_guard-core" }

  before do
    allow(described_class::Config).to receive(:new).and_return(config)

    allow(config).to receive(:current_bundler_gemfile).
      and_return(bundle_gemfile_env)

    allow(config).to receive(:using_bundler?).and_return(bundle_gemfile_env)
    allow(config).to receive(:guard_core_path).and_return(guard_core_path)

    allow(config).to receive(:program_arguments).and_return(%w(foo bar baz))
    allow(config).to receive(:using_rubygems?).and_return(rubygems_deps_env)
    allow(config).to receive(:program_path).and_return(program_path)
  end

  let(:program_path) { Pathname("/home/me/.rvm/gems/ruby-2.2.2/bin/guard") }
  let(:rubygems_deps_env) { nil } # or any gemfile path

  context "when running with bundler" do
    let(:bundle_gemfile_env) { "./Gemfile" }

    it "sets up bundler" do
      expect(config).to receive(:setup_bundler)
      subject.setup
    end
  end

  context "when not running with bundler" do
    let(:bundle_gemfile_env) { nil }

    context "when running with rubygems_gemdeps" do
      let(:rubygems_deps_env) { "-" } # or any gemfile path

      it "sets up rubygems" do
        expect(config).to receive(:setup_rubygems_for_deps)
        subject.setup
      end
    end

    context "when not running with rubygems_gemdeps" do
      let(:rubygems_deps_env) { nil }

      context "when running as binstub" do
        let(:program_path) { Pathname("/my/project/bin/guard") }

        context "when the relative Gemfile exists" do
          before do
            allow(config).to receive(:exist?).
              with(Pathname("/my/project/Gemfile")).and_return(true)

            allow(config).to receive(:setup_bundler)
            allow(config).to receive(:setup_bundler_env)
          end

          it "sets up bundler" do
            expect(config).to receive(:setup_bundler)
            subject.setup
          end

          it "sets the Gemfile" do
            expect(config).to receive(:setup_bundler_env).
              with("/my/project/Gemfile")
            subject.setup
          end
        end

        context "when the relative Gemfile does not exist" do
          before do
            allow(config).to receive(:exist?).
              with(Pathname("/my/project/Gemfile")).and_return(false)

            allow(config).to receive(:exist?).with(Pathname("Gemfile")).
              and_return(false)
          end

          it "does not setup bundler" do
            subject.setup
          end

          it "does not setup rubygems" do
            subject.setup
          end

          it "shows no warning" do
            expect(STDERR).to_not receive(:puts)
            subject.setup
          end
        end
      end

      context "when not run as binstub" do
        let(:program_path) do
          Pathname("/home/me/.rvm/gems/ruby-2.2.2/bin/guard")
        end

        before do
          allow(config).to receive(:exist?).with(
            Pathname("/home/me/.rvm/gems/ruby-2.2.2/Gemfile")
          ).and_return(false)
        end

        context "when Gemfile exists" do
          before do
            allow(config).to receive(:exist?).with(Pathname("Gemfile")).
              and_return(true)
          end

          it "shows a warning" do
            expect(STDERR).to receive(:puts).with(/Warning: you have a Gemfile/)
            subject.setup
          end
        end

        context "when no Gemfile exists" do
          before do
            allow(config).to receive(:exist?).with(Pathname("Gemfile")).
              and_return(false)
          end

          it "shows no warning" do
            expect(STDERR).to_not receive(:puts)
            subject.setup
          end
        end
      end
    end
  end
end
