discourse/spec/models/topic_link_spec.rb

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require 'rails_helper'
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describe TopicLink do
it { is_expected.to validate_presence_of :url }
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def test_uri
URI.parse(Discourse.base_url)
end
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let(:topic) do
Fabricate(:topic, title: 'unique topic name')
end
let(:user) do
topic.user
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end
let(:post) { Fabricate(:post) }
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it "can't link to the same topic" do
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ftl = TopicLink.new(url: "/t/#{topic.id}",
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topic_id: topic.id,
link_topic_id: topic.id)
expect(ftl.valid?).to eq(false)
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end
describe 'external links' do
before do
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post = Fabricate(:post, raw: "
http://a.com/
http://b.com/b
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http://#{'a' * 200}.com/invalid
http://b.com/#{'a' * 500}
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", user: user, topic: topic)
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TopicLink.extract_from(post)
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end
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it 'works' do
# has the forum topic links
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expect(topic.topic_links.count).to eq(3)
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# works with markdown links
expect(topic.topic_links.exists?(url: "http://a.com/")).to eq(true)
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#works with markdown links followed by a period
expect(topic.topic_links.exists?(url: "http://b.com/b")).to eq(true)
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end
end
describe 'internal links' do
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it "extracts onebox" do
other_topic = Fabricate(:topic, user: user)
other_topic.posts.create(user: user, raw: "some content for the first post")
other_post = other_topic.posts.create(user: user, raw: "some content for the second post")
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url = "http://#{test_uri.host}/t/#{other_topic.slug}/#{other_topic.id}/#{other_post.post_number}"
invalid_url = "http://#{test_uri.host}/t/#{other_topic.slug}/9999999999999999999999999999999"
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topic.posts.create(user: user, raw: 'initial post')
post = topic.posts.create(user: user, raw: "Link to another topic:\n\n#{url}\n\n#{invalid_url}")
post.reload
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TopicLink.extract_from(post)
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link = topic.topic_links.first
# should have a link
expect(link).to be_present
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# should be the canonical URL
expect(link.url).to eq(url)
end
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context 'topic link' do
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let(:other_topic) do
Fabricate(:topic, user: user)
end
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let(:post) do
other_topic.posts.create(user: user, raw: "some content")
end
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it 'works' do
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# ensure other_topic has a post
post
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url = "http://#{test_uri.host}/t/#{other_topic.slug}/#{other_topic.id}"
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topic.posts.create(user: user, raw: 'initial post')
linked_post = topic.posts.create(user: user, raw: "Link to another topic: #{url}")
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# this is subtle, but we had a bug were second time
# TopicLink.extract_from was called a reflection was nuked
2.times do
topic.reload
TopicLink.extract_from(linked_post)
link = topic.topic_links.first
expect(link).to be_present
expect(link).to be_internal
expect(link.url).to eq(url)
expect(link.domain).to eq(test_uri.host)
link.link_topic_id == other_topic.id
expect(link).not_to be_reflection
reflection = other_topic.topic_links.first
expect(reflection).to be_present
expect(reflection).to be_reflection
expect(reflection.post_id).to be_present
expect(reflection.domain).to eq(test_uri.host)
expect(reflection.url).to eq("http://#{test_uri.host}/t/unique-topic-name/#{topic.id}/#{linked_post.post_number}")
expect(reflection.link_topic_id).to eq(topic.id)
expect(reflection.link_post_id).to eq(linked_post.id)
expect(reflection.user_id).to eq(link.user_id)
end
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PostOwnerChanger.new(
post_ids: [linked_post.id],
topic_id: topic.id,
acting_user: user,
new_owner: Fabricate(:user)
).change_owner!
TopicLink.extract_from(linked_post)
expect(topic.topic_links.first.url).to eq(url)
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linked_post.revise(post.user, raw: "no more linkies https://eviltrout.com")
expect(other_topic.reload.topic_links.where(link_post_id: linked_post.id)).to be_blank
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end
end
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context "link to a user on discourse" do
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let(:post) { topic.posts.create(user: user, raw: "<a href='/u/#{user.username_lower}'>user</a>") }
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before do
TopicLink.extract_from(post)
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end
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it 'does not extract a link' do
expect(topic.topic_links).to be_blank
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end
end
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context "link to a discourse resource like a FAQ" do
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let(:post) { topic.posts.create(user: user, raw: "<a href='/faq'>faq link here</a>") }
before do
TopicLink.extract_from(post)
end
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it 'does not extract a link' do
expect(topic.topic_links).to be_present
end
end
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context "mention links" do
let(:post) { topic.posts.create(user: user, raw: "Hey #{user.username_lower}") }
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before do
TopicLink.extract_from(post)
end
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it 'does not extract a link' do
expect(topic.topic_links).to be_blank
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end
end
context "mail link" do
let(:post) { topic.posts.create(user: user, raw: "[email]bar@example.com[/email]") }
it 'does not extract a link' do
TopicLink.extract_from(post)
expect(topic.topic_links).to be_blank
end
end
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context "quote links" do
it "sets quote correctly" do
linked_post = topic.posts.create(user: user, raw: "my test post")
quoting_post = Fabricate(:post, raw: "[quote=\"#{user.username}, post: #{linked_post.post_number}, topic: #{topic.id}\"]\nquote\n[/quote]")
TopicLink.extract_from(quoting_post)
link = quoting_post.topic.topic_links.first
expect(link.link_post_id).to eq(linked_post.id)
expect(link.quote).to eq(true)
end
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end
context "link to a local attachments" do
let(:post) { topic.posts.create(user: user, raw: '<a class="attachment" href="/uploads/default/208/87bb3d8428eb4783.rb?foo=bar">ruby.rb</a>') }
it "extracts the link" do
TopicLink.extract_from(post)
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link = topic.topic_links.first
# extracted the link
expect(link).to be_present
# is set to internal
expect(link).to be_internal
# has the correct url
expect(link.url).to eq("/uploads/default/208/87bb3d8428eb4783.rb?foo=bar")
# should not be the reflection
expect(link).not_to be_reflection
# should have file extension
expect(link.extension).to eq('rb')
end
end
context "link to an attachments uploaded on S3" do
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let(:post) { topic.posts.create(user: user, raw: '<a class="attachment" href="//s3.amazonaws.com/bucket/2104a0211c9ce41ed67989a1ed62e9a394c1fbd1446.rb">ruby.rb</a>') }
it "extracts the link" do
TopicLink.extract_from(post)
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link = topic.topic_links.first
# extracted the link
expect(link).to be_present
# is not internal
expect(link).not_to be_internal
# has the correct url
expect(link.url).to eq("//s3.amazonaws.com/bucket/2104a0211c9ce41ed67989a1ed62e9a394c1fbd1446.rb")
# should not be the reflection
expect(link).not_to be_reflection
# should have file extension
expect(link.extension).to eq('rb')
end
end
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end
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describe 'internal link from pm' do
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it 'works' do
pm = Fabricate(:topic, user: user, category_id: nil, archetype: 'private_message')
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pm.posts.create(user: user, raw: "some content")
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url = "http://#{test_uri.host}/t/topic-slug/#{topic.id}"
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pm.posts.create(user: user, raw: 'initial post')
linked_post = pm.posts.create(user: user, raw: "Link to another topic: #{url}")
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TopicLink.extract_from(linked_post)
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expect(topic.topic_links.first).to eq(nil)
expect(pm.topic_links.first).not_to eq(nil)
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end
end
describe 'internal link from unlisted topic' do
it 'works' do
unlisted_topic = Fabricate(:topic, user: user, visible: false)
url = "http://#{test_uri.host}/t/topic-slug/#{topic.id}"
unlisted_topic.posts.create(user: user, raw: 'initial post')
linked_post = unlisted_topic.posts.create(user: user, raw: "Link to another topic: #{url}")
TopicLink.extract_from(linked_post)
expect(topic.topic_links.first).to eq(nil)
expect(unlisted_topic.topic_links.first).not_to eq(nil)
end
end
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describe 'internal link with non-standard port' do
it 'includes the non standard port if present' do
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other_topic = Fabricate(:topic, user: user)
SiteSetting.port = 5678
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alternate_uri = URI.parse(Discourse.base_url)
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url = "http://#{alternate_uri.host}:5678/t/topic-slug/#{other_topic.id}"
post = topic.posts.create(user: user, raw: "Link to another topic: #{url}")
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TopicLink.extract_from(post)
reflection = other_topic.topic_links.first
expect(reflection.url).to eq("http://#{alternate_uri.host}:5678/t/unique-topic-name/#{topic.id}")
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end
end
describe 'query methods' do
it 'returns blank without posts' do
expect(TopicLink.counts_for(Guardian.new, nil, nil)).to be_blank
end
context 'with data' do
let(:post) do
topic = Fabricate(:topic)
Fabricate(:post_with_external_links, user: topic.user, topic: topic)
end
let(:counts_for) do
TopicLink.counts_for(Guardian.new, post.topic, [post])
end
it 'creates a valid topic lookup' do
TopicLink.extract_from(post)
lookup = TopicLink.duplicate_lookup(post.topic)
expect(lookup).to be_present
expect(lookup['google.com']).to be_present
ch = lookup['www.codinghorror.com/blog']
expect(ch).to be_present
expect(ch[:domain]).to eq('www.codinghorror.com')
expect(ch[:username]).to eq(post.username)
expect(ch[:posted_at]).to be_present
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expect(ch[:post_number]).to be_present
end
it 'has the correct results' do
TopicLink.extract_from(post)
topic_link = post.topic.topic_links.first
TopicLinkClick.create(topic_link: topic_link, ip_address: '192.168.1.1')
expect(counts_for[post.id]).to be_present
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expect(counts_for[post.id].find { |l| l[:url] == 'http://google.com' }[:clicks]).to eq(0)
expect(counts_for[post.id].first[:clicks]).to eq(1)
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array = TopicLink.topic_map(Guardian.new, post.topic_id)
expect(array.length).to eq(6)
expect(array[0]["clicks"]).to eq(1)
end
it 'secures internal links correctly' do
category = Fabricate(:category)
secret_topic = Fabricate(:topic, category: category)
url = "http://#{test_uri.host}/t/topic-slug/#{secret_topic.id}"
post = Fabricate(:post, raw: "hello test topic #{url}")
TopicLink.extract_from(post)
expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(1)
expect(TopicLink.counts_for(Guardian.new, post.topic, [post]).length).to eq(1)
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category.set_permissions(staff: :full)
category.save
admin = Fabricate(:admin)
expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(0)
expect(TopicLink.topic_map(Guardian.new(admin), post.topic_id).count).to eq(1)
expect(TopicLink.counts_for(Guardian.new, post.topic, [post]).length).to eq(0)
expect(TopicLink.counts_for(Guardian.new(admin), post.topic, [post]).length).to eq(1)
end
it 'does not include links from whisper' do
url = "https://blog.codinghorror.com/hacker-hack-thyself/"
post = Fabricate(:post, raw: "whisper post... #{url}", post_type: Post.types[:whisper])
TopicLink.extract_from(post)
expect(TopicLink.topic_map(Guardian.new, post.topic_id).count).to eq(0)
end
end
describe ".duplicate_lookup" do
let(:user) { Fabricate(:user, username: "junkrat") }
let(:post_with_internal_link) do
Fabricate(:post, user: user, raw: "Check out this topic #{post.topic.url}/122131")
end
it "should return the right response" do
TopicLink.extract_from(post_with_internal_link)
result = TopicLink.duplicate_lookup(post_with_internal_link.topic)
expect(result.count).to eq(1)
lookup = result["test.localhost/t/#{post.topic.slug}/#{post.topic.id}/122131"]
expect(lookup[:domain]).to eq("test.localhost")
expect(lookup[:username]).to eq("junkrat")
expect(lookup[:posted_at].to_s).to eq(post_with_internal_link.created_at.to_s)
expect(lookup[:post_number]).to eq(1)
result = TopicLink.duplicate_lookup(post.topic)
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expect(result).to eq({})
end
end
it "works with invalid link target" do
post = Fabricate(:post, raw: '<a href="http:geturl">http:geturl</a>', user: user, topic: topic, cook_method: Post.cook_methods[:raw_html])
expect { TopicLink.extract_from(post) }.to_not raise_error
end
end
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end