# License: AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later
require 'rails_helper'

describe Timespan do

	describe '#later_than_by?' do
		let(:month){Timespan.create(1,'month')}
		let(:week){Timespan.create(1,'month')}
		let(:year){Timespan.create(1,'month')}
		let(:day){Timespan.create(1,'month')}

		let(:date){Chronic.parse("2019-01-15")}
		let(:month_later){Chronic.parse("2019-02-15")}

		context 'when second date is later than the first by the timespan,' do
			it 'returns true' do
				expect(Timespan.later_than_by?(date, month_later, month)).to eq(true)
			end
		end

		context 'when the second date is sooner than the first by the timespan,' do
			it 'returns fase' do
				sooner = Chronic.parse("2019-01-25")
				expect(Timespan.later_than_by?(date, sooner, month)).to eq(false)
			end

			context "but when the first date is at the end of a long month and the second date is at the end of a shorter month," do

				let(:jan_31){Chronic.parse("2019-01-31").to_date}
				let(:feb_28){Chronic.parse("2019-02-28").to_date}

				it 'returns true' do
					expect(Timespan.later_than_by?(jan_31, feb_28, month)).to eq(true)
				end
			end
		end
	end

	describe '#create' do

		it 'returns the correct number of seconds constituting a timespan' do
			expect(Timespan.create(1, 'month').to_i).to eq(2592000)
		end

		it 'raises err when given an invalid time unit' do
			expect{Timespan.create(1, 'blerg')}.to raise_error(ArgumentError)
		end
	end

	describe '#in_future?' do
		it 'returns true when date is in the future' do
			expect(Timespan.in_future?(3.days.from_now)).to be(true)
		end
		it 'returns false when date is in the past' do
			expect(Timespan.in_future?(3.days.ago)).to be(false)
		end
	end

	describe '#in_past?' do
		it 'returns true when date is in the past' do
			expect(Timespan.in_past?(3.days.ago)).to be(true)
		end
		it 'returns false when date is in the future' do
			expect(Timespan.in_past?(3.days.from_now)).to be(false)
		end
	end

end