require 'rspec/core/rake_task'

describe KnapsackPro::Runners::RSpecRunner do
  subject { described_class.new(KnapsackPro::Adapters::RSpecAdapter) }

  it { should be_kind_of KnapsackPro::Runners::BaseRunner }

  describe '.run' do
    let(:args) { '--profile --color' }

    let(:test_suite_token_rspec) { 'fake-token' }

    subject { described_class.run(args) }

    before do
      expect(KnapsackPro::Config::Env).to receive(:test_suite_token_rspec).and_return(test_suite_token_rspec)

      expect(ENV).to receive(:[]=).with('KNAPSACK_PRO_TEST_SUITE_TOKEN', test_suite_token_rspec)
      expect(ENV).to receive(:[]=).with('KNAPSACK_PRO_RECORDING_ENABLED', 'true')

      expect(described_class).to receive(:new)
      .with(KnapsackPro::Adapters::RSpecAdapter).and_return(runner)
    end

    context 'when test files were returned by Knapsack Pro API' do
      let(:test_dir) { 'fake-test-dir' }
      let(:stringify_test_file_paths) { "spec/a_spec.rb spec/b_spec.rb[1:1]" }
      let(:runner) do
        instance_double(described_class,
                        test_dir: test_dir,
                        stringify_test_file_paths: stringify_test_file_paths,
                        test_files_to_execute_exist?: true)
      end
      let(:task) { double }

      before do
        expect(KnapsackPro::Adapters::RSpecAdapter).to receive(:verify_bind_method_called).ordered
        expect(KnapsackPro::Adapters::RSpecAdapter).to receive(:ensure_no_tag_option_when_rspec_split_by_test_examples_enabled!).with(['--profile', '--color']).ordered

        expect(Rake::Task).to receive(:[]).with('knapsack_pro:rspec_run').at_least(1).and_return(task)

        t = double
        expect(RSpec::Core::RakeTask).to receive(:new).with('knapsack_pro:rspec_run').and_yield(t)
        expect(t).to receive(:rspec_opts=).with('--profile --color --default-path fake-test-dir spec/a_spec.rb spec/b_spec.rb[1:1]')
        expect(t).to receive(:pattern=).with([])
      end

      context 'when rake task already exists' do
        before do
          expect(Rake::Task).to receive(:task_defined?).with('knapsack_pro:rspec_run').and_return(true)
          expect(task).to receive(:clear)
        end

        it do
          result = double(:result)
          expect(task).to receive(:invoke).and_return(result)
          expect(subject).to eq result
        end
      end

      context "when rake task doesn't exist" do
        before do
          expect(Rake::Task).to receive(:task_defined?).with('knapsack_pro:rspec_run').and_return(false)
          expect(task).not_to receive(:clear)
        end

        it do
          result = double(:result)
          expect(task).to receive(:invoke).and_return(result)
          expect(subject).to eq result
        end
      end
    end

    context 'when test files were not returned by Knapsack Pro API' do
      let(:runner) do
        instance_double(described_class,
                        test_files_to_execute_exist?: false)
      end

      it "doesn't run tests" do
        subject
      end
    end
  end
end