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Add trending links (#16917)

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* Add trending links

* Add overriding specific links trendability

* Add link type to preview cards and only trend articles

Change trends review notifications from being sent every 5 minutes to being sent every 2 hours

Change threshold from 5 unique accounts to 15 unique accounts

* Fix tests
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Eugen Rochko 2021-11-25 13:07:38 +01:00 • committed by GitHub
parent 46e62fc4b3
commit 6e50134a42
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97 changed files with 2071 additions and 722 deletions
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68
spec/models/trending_tags_spec.rb
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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', trendable: true) }
let!(:tag2) { Fabricate(:tag, name: 'DogsOfMastodon', trendable: true) }
let!(:tag3) { Fabricate(:tag, name: 'OCs', trendable: true) }
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

67
spec/models/trends/tags_spec.rb Normal file
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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 '#get' 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.get(false, 10)).to eq [tag1, tag3]
end
it 'omits hashtags below threshold' do
expect(subject.get(false, 10)).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