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require 'rails_helper'
RSpec.describe TrendingTags do
describe '.record_use!' do
pending
end
describe '.update!' do
let!(:at_time) { Time.now.utc }
let!(:tag1) { Fabricate(:tag, name: 'Catstodon') }
let!(:tag2) { Fabricate(:tag, name: 'DogsOfMastodon') }
let!(:tag3) { Fabricate(:tag, name: 'OCs') }
before do
allow(Redis.current).to receive(:pfcount) do |key|
case key
when "activity:tags:#{tag1.id}:#{(at_time - 1.day).beginning_of_day.to_i}:accounts"
2
when "activity:tags:#{tag1.id}:#{at_time.beginning_of_day.to_i}:accounts"
16
when "activity:tags:#{tag2.id}:#{(at_time - 1.day).beginning_of_day.to_i}:accounts"
0
when "activity:tags:#{tag2.id}:#{at_time.beginning_of_day.to_i}:accounts"
4
when "activity:tags:#{tag3.id}:#{(at_time - 1.day).beginning_of_day.to_i}:accounts"
13
end
end
Redis.current.zadd('trending_tags', 0.9, tag3.id)
Redis.current.sadd("trending_tags:used:#{at_time.beginning_of_day.to_i}", [tag1.id, tag2.id])
tag3.update(max_score: 0.9, max_score_at: (at_time - 1.day).beginning_of_day + 12.hours)
described_class.update!(at_time)
end
it 'calculates and re-calculates scores' do
expect(described_class.get(10, filtered: false)).to eq [tag1, tag3]
end
it 'omits hashtags below threshold' do
expect(described_class.get(10, filtered: false)).to_not include(tag2)
end
it 'decays scores' do
expect(Redis.current.zscore('trending_tags', tag3.id)).to be < 0.9
end
end
describe '.trending?' do
let(:tag) { Fabricate(:tag) }
before do
10.times { |i| Redis.current.zadd('trending_tags', i + 1, Fabricate(:tag).id) }
end
it 'returns true if the hashtag is within limit' do
Redis.current.zadd('trending_tags', 11, tag.id)
expect(described_class.trending?(tag)).to be true
end
it 'returns false if the hashtag is outside the limit' do
Redis.current.zadd('trending_tags', 0, tag.id)
expect(described_class.trending?(tag)).to be false
end
end
end
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