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require 'rails_helper'
RSpec.describe Trends::Tags do
subject { described_class.new(threshold: 5, review_threshold: 10) }
let!(:at_time) { DateTime.new(2021, 11, 14, 10, 15, 0) }
describe '#add' do
let(:tag) { Fabricate(:tag) }
before do
subject.add(tag, 1, at_time)
end
it 'records history' do
expect(tag.history.get(at_time).accounts).to eq 1
end
it 'records use' do
expect(subject.send(:recently_used_ids, at_time)).to eq [tag.id]
end
end
describe '#query' do
pending
end
describe '#refresh' do
let!(:today) { at_time }
let!(:yesterday) { today - 1.day }
let!(:tag1) { Fabricate(:tag, name: 'Catstodon', trendable: true) }
let!(:tag2) { Fabricate(:tag, name: 'DogsOfMastodon', trendable: true) }
let!(:tag3) { Fabricate(:tag, name: 'OCs', trendable: true) }
before do
2.times { |i| subject.add(tag1, i, yesterday) }
13.times { |i| subject.add(tag3, i, yesterday) }
16.times { |i| subject.add(tag1, i, today) }
4.times { |i| subject.add(tag2, i, today) }
end
context do
before do
subject.refresh(yesterday + 12.hours)
subject.refresh(at_time)
end
it 'calculates and re-calculates scores' do
expect(subject.query.limit(10).to_a).to eq [tag1, tag3]
end
it 'omits hashtags below threshold' do
expect(subject.query.limit(10).to_a).to_not include(tag2)
end
end
it 'decays scores' do
subject.refresh(yesterday + 12.hours)
original_score = subject.score(tag3.id)
expect(original_score).to eq 144.0
subject.refresh(yesterday + 12.hours + subject.options[:max_score_halflife])
decayed_score = subject.score(tag3.id)
expect(decayed_score).to be <= original_score / 2
end
end
end
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