111 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			111 lines
		
	
	
		
			3.1 KiB
		
	
	
	
		
			Ruby
		
	
	
	
require 'rails_helper'
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RSpec.describe Trends::Statuses do
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  subject! { described_class.new(threshold: 5, review_threshold: 10, score_halflife: 8.hours) }
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  let!(:at_time) { DateTime.new(2021, 11, 14, 10, 15, 0) }
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  describe 'Trends::Statuses::Query' do
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    let!(:query) { subject.query }
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    let!(:today) { at_time }
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    let!(:status1) { Fabricate(:status, text: 'Foo', trendable: true, created_at: today) }
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    let!(:status2) { Fabricate(:status, text: 'Bar', trendable: true, created_at: today) }
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    before do
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      15.times { reblog(status1, today) }
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      12.times { reblog(status2, today) }
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      subject.refresh(today)
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    end
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    describe '#filtered_for' do
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      let(:account) { Fabricate(:account) }
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      it 'returns a composable query scope' do
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        expect(query.filtered_for(account)).to be_a Trends::Query
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      end
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      it 'filters out blocked accounts' do
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        account.block!(status1.account)
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        expect(query.filtered_for(account).to_a).to eq [status2]
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      end
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      it 'filters out muted accounts' do
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        account.mute!(status2.account)
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        expect(query.filtered_for(account).to_a).to eq [status1]
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      end
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      it 'filters out blocked-by accounts' do
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        status1.account.block!(account)
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        expect(query.filtered_for(account).to_a).to eq [status2]
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      end
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    end
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  end
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  describe '#add' do
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    let(:status) { Fabricate(:status) }
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    before do
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      subject.add(status, 1, at_time)
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    end
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    it 'records use' do
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      expect(subject.send(:recently_used_ids, at_time)).to eq [status.id]
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    end
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  end
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  describe '#query' do
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    it 'returns a composable query scope' do
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      expect(subject.query).to be_a Trends::Query
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    end
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    it 'responds to filtered_for' do
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      expect(subject.query).to respond_to(:filtered_for)
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    end
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  end
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  describe '#refresh' do
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    let!(:today) { at_time }
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    let!(:yesterday) { today - 1.day }
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    let!(:status1) { Fabricate(:status, text: 'Foo', trendable: true, created_at: yesterday) }
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    let!(:status2) { Fabricate(:status, text: 'Bar', trendable: true, created_at: today) }
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    let!(:status3) { Fabricate(:status, text: 'Baz', trendable: true, created_at: today) }
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    before do
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      13.times { reblog(status1, today) }
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      13.times { reblog(status2, today) }
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       4.times { reblog(status3, today) }
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    end
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    context do
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      before do
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        subject.refresh(today)
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      end
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      it 'calculates and re-calculates scores' do
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        expect(subject.query.limit(10).to_a).to eq [status2, status1]
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      end
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      it 'omits statuses below threshold' do
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        expect(subject.query.limit(10).to_a).to_not include(status3)
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      end
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    end
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    it 'decays scores' do
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      subject.refresh(today)
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      original_score = subject.score(status2.id)
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      expect(original_score).to be_a Float
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      subject.refresh(today + subject.options[:score_halflife])
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      decayed_score = subject.score(status2.id)
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      expect(decayed_score).to be <= original_score / 2
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    end
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  end
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  def reblog(status, at_time)
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    reblog = Fabricate(:status, reblog: status, created_at: at_time)
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    subject.add(status, reblog.account_id, at_time)
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  end
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end
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