require 'spec_helper'

describe MilestonesHelper do
  describe "#milestone_date_range" do
    def result_for(*args)
      milestone_date_range(build(:milestone, *args))
    end

    let(:yesterday) { Date.yesterday }
    let(:tomorrow) { yesterday + 2 }
    let(:format) { '%b %-d, %Y' }
    let(:yesterday_formatted) { yesterday.strftime(format) }
    let(:tomorrow_formatted) { tomorrow.strftime(format) }

    it { expect(result_for(due_date: nil, start_date: nil)).to be_nil }
    it { expect(result_for(due_date: tomorrow)).to eq("expires on #{tomorrow_formatted}") }
    it { expect(result_for(due_date: yesterday)).to eq("expired on #{yesterday_formatted}") }
    it { expect(result_for(start_date: tomorrow)).to eq("starts on #{tomorrow_formatted}") }
    it { expect(result_for(start_date: yesterday)).to eq("started on #{yesterday_formatted}") }
    it { expect(result_for(start_date: yesterday, due_date: tomorrow)).to eq("#{yesterday_formatted}–#{tomorrow_formatted}") }
  end

  describe '#milestone_counts' do
    let(:project) { create(:empty_project) }
    let(:counts) { helper.milestone_counts(project.milestones) }

    context 'when there are milestones' do
      it 'returns the correct counts' do
        create_list(:active_milestone, 2, project: project)
        create(:closed_milestone, project: project)

        expect(counts).to eq(opened: 2, closed: 1, all: 3)
      end
    end

    context 'when there are only milestones of one type' do
      it 'returns the correct counts' do
        create_list(:active_milestone, 2, project: project)

        expect(counts).to eq(opened: 2, closed: 0, all: 2)
      end
    end

    context 'when there are no milestones' do
      it 'returns the correct counts' do
        expect(counts).to eq(opened: 0, closed: 0, all: 0)
      end
    end
  end

  describe '#milestone_remaining_days' do
    around do |example|
      Timecop.freeze(Time.utc(2017, 3, 17)) { example.run }
    end

    context 'when less than 31 days remaining' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 12.days.from_now.utc)) }

      it 'returns days remaining' do
        expect(milestone_remaining).to eq("<strong>12</strong> days remaining")
      end
    end

    context 'when less than 1 year and more than 30 days remaining' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.months.from_now.utc)) }

      it 'returns months remaining' do
        expect(milestone_remaining).to eq("<strong>2</strong> months remaining")
      end
    end

    context 'when more than 1 year remaining' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: (1.year.from_now + 2.days).utc)) }

      it 'returns years remaining' do
        expect(milestone_remaining).to eq("<strong>1</strong> year remaining")
      end
    end

    context 'when milestone is expired' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, due_date: 2.days.ago.utc)) }

      it 'returns "Past due"' do
        expect(milestone_remaining).to eq("<strong>Past due</strong>")
      end
    end

    context 'when milestone has start_date in the future' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.from_now.utc)) }

      it 'returns "Upcoming"' do
        expect(milestone_remaining).to eq("<strong>Upcoming</strong>")
      end
    end

    context 'when milestone has start_date in the past' do
      let(:milestone_remaining) { milestone_remaining_days(build_stubbed(:milestone, start_date: 2.days.ago.utc)) }

      it 'returns days elapsed' do
        expect(milestone_remaining).to eq("<strong>2</strong> days elapsed")
      end
    end
  end
end
