discourse/spec/models/topic_embed_spec.rb

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# frozen_string_literal: true
require 'rails_helper'
require 'stringio'
describe TopicEmbed do
it { is_expected.to belong_to :topic }
it { is_expected.to belong_to :post }
it { is_expected.to validate_presence_of :embed_url }
context '.import' do
fab!(:user) { Fabricate(:user) }
let(:title) { "How to turn a fish from good to evil in 30 seconds" }
let(:url) { 'http://eviltrout.com/123' }
let(:contents) { "<p>hello world new post <a href='/hello'>hello</a> <img src='/images/wat.jpg'></p>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
it "returns nil when the URL is malformed" do
expect(TopicEmbed.import(user, "invalid url", title, contents)).to eq(nil)
expect(TopicEmbed.count).to eq(0)
end
context 'creation of a post' do
let!(:post) { TopicEmbed.import(user, url, title, contents) }
let(:topic_embed) { TopicEmbed.find_by(post: post) }
it "works as expected with a new URL" do
expect(post).to be_present
# It uses raw_html rendering
expect(post.cook_method).to eq(Post.cook_methods[:raw_html])
expect(post.cooked).to eq(post.raw)
# It converts relative URLs to absolute
expect(post.cooked).to have_tag('a', with: { href: 'http://eviltrout.com/hello' })
expect(post.cooked).to have_tag('img', with: { src: 'http://eviltrout.com/images/wat.jpg' })
expect(post.topic.has_topic_embed?).to eq(true)
expect(TopicEmbed.where(topic_id: post.topic_id)).to be_present
expect(post.topic.category).to eq(embeddable_host.category)
expect(post.topic).to be_visible
end
it "Supports updating the post content" do
expect do
TopicEmbed.import(user, url, "New title received", "<p>muhahaha new contents!</p>")
end.to change { topic_embed.reload.content_sha1 }
expect(topic_embed.topic.title).to eq("New title received")
expect(topic_embed.post.cooked).to match(/new contents/)
end
it "Supports updating the post author" do
new_user = Fabricate(:user)
TopicEmbed.import(new_user, url, title, contents)
topic_embed.reload
expect(topic_embed.post.user).to eq(new_user)
expect(topic_embed.post.topic.user).to eq(new_user)
end
it "Should leave uppercase Feed Entry URL untouched in content" do
cased_url = 'http://eviltrout.com/ABCD'
post = TopicEmbed.import(user, cased_url, title, "some random content")
expect(post.cooked).to match(/#{cased_url}/)
end
it "Should leave lowercase Feed Entry URL untouched in content" do
cased_url = 'http://eviltrout.com/abcd'
post = TopicEmbed.import(user, cased_url, title, "some random content")
expect(post.cooked).to match(/#{cased_url}/)
end
it "will make the topic unlisted if `embed_unlisted` is set until someone replies" do
Jobs.run_immediately!
SiteSetting.embed_unlisted = true
imported_post = TopicEmbed.import(user, "http://eviltrout.com/abcd", title, "some random content")
expect(imported_post.topic).not_to be_visible
pc = PostCreator.new(
Fabricate(:user),
raw: "this is a reply that will make the topic visible",
topic_id: imported_post.topic_id,
reply_to_post_number: 1
)
pc.create
expect(imported_post.topic.reload).to be_visible
end
end
context "post creation supports markdown rendering" do
before do
SiteSetting.embed_support_markdown = true
end
it "works as expected" do
post = TopicEmbed.import(user, url, title, "some random content")
expect(post).to be_present
# It uses regular rendering
expect(post.cook_method).to eq(Post.cook_methods[:regular])
end
end
describe 'embedded content truncation' do
MAX_LENGTH_BEFORE_TRUNCATION = 100
let(:long_content) { "<p>#{'a' * MAX_LENGTH_BEFORE_TRUNCATION}</p>\n<p>more</p>" }
it 'truncates the imported post when truncation is enabled' do
SiteSetting.embed_truncate = true
post = TopicEmbed.import(user, url, title, long_content)
expect(post.raw).not_to include(long_content)
end
it 'keeps everything in the imported post when truncation is disabled' do
SiteSetting.embed_truncate = false
post = TopicEmbed.import(user, url, title, long_content)
expect(post.raw).to include(long_content)
end
it 'looks at first div when there is no paragraph' do
no_para = "<div><h>testing it</h></div>"
SiteSetting.embed_truncate = true
post = TopicEmbed.import(user, url, title, no_para)
expect(post.raw).to include("testing it")
end
end
end
context '.topic_id_for_embed' do
it "returns correct topic id irrespective of url protocol" do
topic_embed = Fabricate(:topic_embed, embed_url: "http://example.com/post/248")
expect(TopicEmbed.topic_id_for_embed('http://exAMPle.com/post/248')).to eq(topic_embed.topic_id)
expect(TopicEmbed.topic_id_for_embed('https://example.com/post/248/')).to eq(topic_embed.topic_id)
expect(TopicEmbed.topic_id_for_embed('http://example.com/post/248/2')).to eq(nil)
expect(TopicEmbed.topic_id_for_embed('http://examples.com/post/248')).to eq(nil)
expect(TopicEmbed.topic_id_for_embed('http://example.com/post/24')).to eq(nil)
expect(TopicEmbed.topic_id_for_embed('http://example.com/post')).to eq(nil)
end
it "finds the topic id when the embed_url contains a query string" do
topic_embed = Fabricate(:topic_embed, embed_url: "http://example.com/post/248?key=foo")
expect(TopicEmbed.topic_id_for_embed('http://example.com/post/248?key=foo')).to eq(topic_embed.topic_id)
end
end
describe '.find_remote' do
context ".title_scrub" do
let(:url) { 'http://eviltrout.com/123' }
let(:contents) { "<title>Through the Looking Glass - Classic Books</title><body>some content here</body>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
before do
file.stubs(:read).returns contents
TopicEmbed.stubs(:open).returns file
stub_request(:head, url)
end
it "doesn't scrub the title by default" do
response = TopicEmbed.find_remote(url)
expect(response.title).to eq("Through the Looking Glass - Classic Books")
end
it "scrubs the title when the option is enabled" do
SiteSetting.embed_title_scrubber = " - Classic Books$"
response = TopicEmbed.find_remote(url)
expect(response.title).to eq("Through the Looking Glass")
end
end
context 'post with allowed classes "foo" and "emoji"' do
fab!(:user) { Fabricate(:user) }
let(:url) { 'http://eviltrout.com/123' }
let(:contents) { "my normal size emoji <p class='foo'>Hi</p> <img class='emoji other foo' src='/images/smiley.jpg'>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
response = nil
before do
SiteSetting.allowed_embed_classnames = 'emoji, foo'
file.stubs(:read).returns contents
TopicEmbed.stubs(:open).returns file
stub_request(:head, url)
response = TopicEmbed.find_remote(url)
end
it "has no author tag" do
expect(response.author).to be_blank
end
it 'img node has emoji class' do
expect(response.body).to have_tag('img', with: { class: 'emoji' })
end
it 'img node has foo class' do
expect(response.body).to have_tag('img', with: { class: 'foo' })
end
it 'p node has foo class' do
expect(response.body).to have_tag('p', with: { class: 'foo' })
end
it 'nodes removes classes other than emoji' do
expect(response.body).to have_tag('img', without: { class: 'other' })
end
end
context 'post with author metadata' do
fab!(:user) { Fabricate(:user, username: 'eviltrout') }
let(:url) { 'http://eviltrout.com/321' }
let(:contents) { '<html><head><meta name="author" content="eviltrout"></head><body>rich and morty</body></html>' }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
response = nil
before(:each) do
file.stubs(:read).returns contents
TopicEmbed.stubs(:open).returns file
stub_request(:head, url)
response = TopicEmbed.find_remote(url)
end
it "has no author tag" do
expect(response.author).to eq(user)
end
end
context 'post with no allowed classes' do
fab!(:user) { Fabricate(:user) }
let(:url) { 'http://eviltrout.com/123' }
let(:contents) { "my normal size emoji <p class='foo'>Hi</p> <img class='emoji other foo' src='/images/smiley.jpg'>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
response = nil
before(:each) do
SiteSetting.allowed_embed_classnames = ''
file.stubs(:read).returns contents
TopicEmbed.stubs(:open).returns file
stub_request(:head, url)
response = TopicEmbed.find_remote(url)
end
it 'img node doesn\'t have emoji class' do
expect(response.body).to have_tag('img', without: { class: 'emoji' })
end
it 'img node doesn\'t have foo class' do
expect(response.body).to have_tag('img', without: { class: 'foo' })
end
it 'p node doesn\'t foo class' do
expect(response.body).to have_tag('p', without: { class: 'foo' })
end
it 'img node doesn\'t have other class' do
expect(response.body).to have_tag('img', without: { class: 'other' })
end
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end
context "non-ascii URL" do
let(:url) { 'http://eviltrout.com/test/ماهی' }
let(:contents) { "<title>سلام</title><body>این یک پاراگراف آزمون است.</body>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
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let!(:file) { StringIO.new }
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before do
stub_request(:head, url)
stub_request(:get, url).to_return(body: contents).then.to_raise
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end
it "doesn't throw an error" do
response = TopicEmbed.find_remote(url)
expect(response.title).to eq("سلام")
end
end
context "encoded URL" do
let(:url) { 'http://example.com/hello%20world' }
let(:contents) { "<title>Hello World!</title><body></body>" }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
before do
stub_request(:head, url)
stub_request(:get, url).to_return(body: contents).then.to_raise
end
it "doesn't throw an error" do
response = TopicEmbed.find_remote(url)
expect(response.title).to eq("Hello World!")
end
end
context "non-http URL" do
it "throws an error" do
url = '/test.txt'
expect(TopicEmbed.find_remote(url)).to be_nil
end
end
context "emails" do
let(:url) { 'http://example.com/foo' }
let(:contents) { '<p><a href="mailto:foo%40example.com">URL encoded @ symbol</a></p><p><a href="mailto:bar@example.com">normal mailto link</a></p>' }
fab!(:embeddable_host) { Fabricate(:embeddable_host) }
let!(:file) { StringIO.new }
before do
file.stubs(:read).returns contents
TopicEmbed.stubs(:open).returns file
end
it "handles mailto links" do
stub_request(:head, url)
response = TopicEmbed.find_remote(url)
expect(response.body).to have_tag('a', with: { href: 'mailto:foo%40example.com' })
expect(response.body).to have_tag('a', with: { href: 'mailto:bar@example.com' })
end
end
end
describe '.absolutize_urls' do
let(:invalid_url) { 'http://source.com/#double#anchor' }
let(:contents) { "hello world new post <a href='/hello'>hello</a>" }
it "does not attempt absolutizing on a bad URI" do
raw = TopicEmbed.absolutize_urls(invalid_url, contents)
expect(raw).to eq(contents)
end
end
end