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UserStat has some special logic to keep adding time read if repeat calls are made in intervals less than 100 seconds. This is called regularly when we update read timings on a topic. We only need to cache this key in redis for 100 seconds, however previously we would keep it forever, 1 key per user. This has potential of bloating a very large amount of keys for no longer active users in redis.
116 lines
3.2 KiB
Ruby
116 lines
3.2 KiB
Ruby
require 'rails_helper'
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describe UserStat do
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it "is created automatically when a user is created" do
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user = Fabricate(:evil_trout)
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expect(user.user_stat).to be_present
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# It populates the `new_since` field by default
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expect(user.user_stat.new_since).to be_present
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end
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context '#update_view_counts' do
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let(:user) { Fabricate(:user) }
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let(:stat) { user.user_stat }
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context 'topics_entered' do
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context 'without any views' do
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it "doesn't increase the user's topics_entered" do
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expect { UserStat.update_view_counts; stat.reload }.not_to change(stat, :topics_entered)
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end
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end
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context 'with a view' do
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let(:topic) { Fabricate(:topic) }
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let!(:view) { TopicViewItem.add(topic.id, '127.0.0.1', user.id) }
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before do
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user.update_column :last_seen_at, 1.second.ago
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end
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it "adds one to the topics entered" do
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UserStat.update_view_counts
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stat.reload
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expect(stat.topics_entered).to eq(1)
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end
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it "won't record a second view as a different topic" do
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TopicViewItem.add(topic.id, '127.0.0.1', user.id)
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UserStat.update_view_counts
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stat.reload
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expect(stat.topics_entered).to eq(1)
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end
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end
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end
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context 'posts_read_count' do
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context 'without any post timings' do
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it "doesn't increase the user's posts_read_count" do
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expect { UserStat.update_view_counts; stat.reload }.not_to change(stat, :posts_read_count)
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end
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end
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context 'with a post timing' do
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let!(:post) { Fabricate(:post) }
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let!(:post_timings) do
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PostTiming.record_timing(msecs: 1234, topic_id: post.topic_id, user_id: user.id, post_number: post.post_number)
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end
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before do
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user.update_column :last_seen_at, 1.second.ago
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end
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it "increases posts_read_count" do
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UserStat.update_view_counts
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stat.reload
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expect(stat.posts_read_count).to eq(1)
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end
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end
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end
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end
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describe 'update_time_read!' do
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let(:user) { Fabricate(:user) }
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let(:stat) { user.user_stat }
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it 'always expires redis key' do
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# this tests implementation which is not 100% ideal
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# that said, redis key leaks are not good
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stat.update_time_read!
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ttl = $redis.ttl(UserStat.last_seen_key(user.id))
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expect(ttl).to be > 0
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expect(ttl).to be <= UserStat::MAX_TIME_READ_DIFF
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end
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it 'makes no changes if nothing is cached' do
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$redis.del(UserStat.last_seen_key(user.id))
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stat.update_time_read!
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stat.reload
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expect(stat.time_read).to eq(0)
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end
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it 'makes a change if time read is below threshold' do
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freeze_time
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UserStat.cache_last_seen(user.id, (Time.now - 10).to_f)
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stat.update_time_read!
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stat.reload
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expect(stat.time_read).to eq(10)
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end
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it 'makes no change if time read is above threshold' do
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freeze_time
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t = Time.now - 1 - UserStat::MAX_TIME_READ_DIFF
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UserStat.cache_last_seen(user.id, t.to_f)
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stat.update_time_read!
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stat.reload
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expect(stat.time_read).to eq(0)
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end
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end
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end
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