discourse/spec/lib/retrieve_title_spec.rb

189 lines
6.5 KiB
Ruby
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

# frozen_string_literal: true
RSpec.describe RetrieveTitle do
describe ".extract_title" do
it "will extract the value from the title tag" do
title = RetrieveTitle.extract_title(
"<html><title>My Cool Title</title></html>"
)
expect(title).to eq("My Cool Title")
end
it "will strip whitespace" do
title = RetrieveTitle.extract_title(
"<html><title> Another Title\n\n </title></html>"
)
expect(title).to eq("Another Title")
end
it "will pick og:title if title is missing" do
title = RetrieveTitle.extract_title(<<~HTML
<html>
<meta property="og:title" content="Good Title"
</html>
HTML
)
expect(title).to eq("Good Title")
end
it "will prefer the title over the opengraph tag" do
title = RetrieveTitle.extract_title(<<~HTML
<html>
<title>Good Title</title>
<meta property="og:title" content="Bad Title"
</html>
HTML
)
expect(title).to eq("Good Title")
end
it "will parse a YouTube url from javascript" do
title = RetrieveTitle.extract_title(<<~HTML
<html>
<title>YouTube</title>
<script>document.title = "Video Title";</script>
</html>
HTML
)
expect(title).to eq("Video Title")
end
it "will not exception out for invalid html" do
attributes = (1..1000).map { |x| " attr#{x}='1' " }.join
title = RetrieveTitle.extract_title <<~HTML
<html>
<title>test</title>
<body #{attributes}>
</html>
HTML
expect(title).to eq(nil)
end
end
describe ".crawl" do
it "can properly extract a title from a url" do
stub_request(:get, "https://brelksdjflaskfj.com/amazing")
.to_return(status: 200, body: "<html><title>very amazing</title>")
# we still resolve the IP address for every host
IPSocket.stubs(:getaddress).returns('100.2.3.4')
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq("very amazing")
end
it "detects and uses encoding from Content-Type header" do
stub_request(:get, "https://brelksdjflaskfj.com/amazing")
.to_return(
status: 200,
body: "<html><title>fancy apostrophes </title>".dup.force_encoding('ASCII-8BIT'),
headers: { 'Content-Type' => 'text/html; charset="utf-8"' }
)
IPSocket.stubs(:getaddress).returns('100.2.3.4')
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq("fancy apostrophes ")
stub_request(:get, "https://brelksdjflaskfj.com/amazing")
.to_return(
status: 200,
body: "<html><title>japanese こんにちは website</title>".encode('EUC-JP').force_encoding('ASCII-8BIT'),
headers: { 'Content-Type' => 'text/html;charset=euc-jp' }
)
IPSocket.stubs(:getaddress).returns('100.2.3.4')
expect(RetrieveTitle.crawl("https://brelksdjflaskfj.com/amazing")).to eq("japanese こんにちは website")
end
it "can follow redirect" do
stub_request(:get, "http://foobar.com/amazing").
to_return(status: 301, body: "", headers: { "location" => "https://wikipedia.com/amazing" })
stub_request(:get, "https://wikipedia.com/amazing").
to_return(status: 200, body: "<html><title>very amazing</title>", headers: {})
IPSocket.stubs(:getaddress).returns('100.2.3.4')
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to eq("very amazing")
end
it "returns empty title if redirect uri is in blacklist" do
SiteSetting.blocked_onebox_domains = "wikipedia.com"
stub_request(:get, "http://foobar.com/amazing")
.to_return(status: 301, body: "", headers: { "location" => "https://wikipedia.com/amazing" })
stub_request(:get, "https://wikipedia.com/amazing")
.to_return(status: 200, body: "<html><title>very amazing</title>", headers: {})
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to eq(nil)
end
it "doesn't return title if a blocked domain is encountered anywhere in the redirect chain" do
SiteSetting.blocked_onebox_domains = "wikipedia.com"
stub_request(:get, "http://foobar.com/amazing")
.to_return(status: 301, body: "", headers: { "location" => "https://wikipedia.com/amazing" })
stub_request(:get, "https://wikipedia.com/amazing")
.to_return(status: 301, body: "", headers: { "location" => "https://cat.com/meow" })
stub_request(:get, "https://cat.com/meow")
.to_return(status: 200, body: "<html><title>very amazing</title>", headers: {})
expect(RetrieveTitle.crawl("http://foobar.com/amazing")).to be_blank
end
it "doesn't return title if the Discourse-No-Onebox header == 1" do
stub_request(:get, "https://cat.com/meow/no-onebox")
.to_return(
status: 200,
body: "<html><title>discourse stay away</title>",
headers: { "Discourse-No-Onebox" => "1" }
)
expect(RetrieveTitle.crawl("https://cat.com/meow/no-onebox")).to be_blank
end
it "doesn't return a title if response is unsuccessful" do
stub_request(:get, "https://example.com").to_return(status: 404, body: "")
expect(RetrieveTitle.crawl("https://example.com")).to eq(nil)
end
it "it raises errors other than Net::ReadTimeout, e.g. NoMethodError" do
stub_request(:get, "https://example.com").to_raise(NoMethodError)
expect { RetrieveTitle.crawl("https://example.com") }.to raise_error(NoMethodError)
end
it "it ignores Net::ReadTimeout errors" do
stub_request(:get, "https://example.com").to_raise(Net::ReadTimeout)
expect { RetrieveTitle.crawl("https://example.com") }.not_to raise_error
end
end
describe '.fetch_title' do
it "does not parse broken title tag" do
# webmock does not do chunks
stub_request(:get, "https://en.wikipedia.org/wiki/Internet").
to_return(status: 200, body: "<html><head><title>Internet - Wikipedia</ti" , headers: {})
title = RetrieveTitle.fetch_title("https://en.wikipedia.org/wiki/Internet")
expect(title).to eq(nil)
end
it "can parse correct title tag" do
# webmock does not do chunks
stub_request(:get, "https://en.wikipedia.org/wiki/Internet").
to_return(status: 200, body: "<html><head><title>Internet - Wikipedia</title>" , headers: {})
title = RetrieveTitle.fetch_title("https://en.wikipedia.org/wiki/Internet")
expect(title).to eq("Internet - Wikipedia")
end
end
end