discourse/spec/components/email/styles_spec.rb

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require 'rails_helper'
require 'email'
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describe Email::Styles do
def basic_fragment(html)
styler = Email::Styles.new(html)
styler.format_basic
Nokogiri::HTML.fragment(styler.to_html)
end
def html_fragment(html)
styler = Email::Styles.new(html)
styler.format_basic
styler.format_html
Nokogiri::HTML.fragment(styler.to_html)
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end
context "basic formatter" do
it "works with an empty string" do
style = Email::Styles.new("")
style.format_basic
expect(style.to_html).to be_blank
end
# Pending due to email effort @coding-horror made in d2fb2bc4c
skip "adds a max-width to images" do
frag = basic_fragment("<img src='gigantic.jpg'>")
expect(frag.at("img")["style"]).to match("max-width")
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end
it "adds a width and height to images with an emoji path" do
frag = basic_fragment("<img src='/images/emoji/fish.png' class='emoji'>")
expect(frag.at("img")["width"]).to eq("20")
expect(frag.at("img")["height"]).to eq("20")
end
it "converts relative paths to absolute paths" do
frag = basic_fragment("<img src='/some-image.png'>")
expect(frag.at("img")["src"]).to eq("#{Discourse.base_url}/some-image.png")
end
it "strips classes and ids" do
frag = basic_fragment("<div class='foo' id='bar'><div class='foo' id='bar'></div></div>")
expect(frag.to_html).to eq("<div><div></div></div>")
end
end
context "html template formatter" do
it "works with an empty string" do
style = Email::Styles.new("")
style.format_html
expect(style.to_html).to be_blank
end
it "attaches a style to h3 tags" do
frag = html_fragment("<h3>hello</h3>")
expect(frag.at('h3')['style']).to be_present
end
it "attaches a style to hr tags" do
frag = html_fragment("hello<hr>")
expect(frag.at('hr')['style']).to be_present
end
it "attaches a style to a tags" do
frag = html_fragment("<a href>wat</a>")
expect(frag.at('a')['style']).to be_present
end
it "attaches a style to a tags" do
frag = html_fragment("<a href>wat</a>")
expect(frag.at('a')['style']).to be_present
end
it "attaches a style to ul and li tags" do
frag = html_fragment("<ul><li>hello</li></ul>")
expect(frag.at('ul')['style']).to be_present
expect(frag.at('li')['style']).to be_present
end
it "converts iframes to links" do
iframe_url = "http://www.youtube.com/embed/7twifrxOTQY?feature=oembed&wmode=opaque"
frag = html_fragment("<iframe src=\"#{iframe_url}\"></iframe>")
expect(frag.at('iframe')).to be_blank
expect(frag.at('a')).to be_present
expect(frag.at('a')['href']).to eq(iframe_url)
end
it "won't allow non URLs in iframe src, strips them with no link" do
iframe_url = "alert('xss hole')"
frag = html_fragment("<iframe src=\"#{iframe_url}\"></iframe>")
expect(frag.at('iframe')).to be_blank
expect(frag.at('a')).to be_blank
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end
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end
context "rewriting protocol relative URLs to the forum" do
it "doesn't rewrite a url to another site" do
frag = html_fragment('<a href="//youtube.com/discourse">hello</a>')
expect(frag.at('a')['href']).to eq("//youtube.com/discourse")
end
context "without https" do
before do
SiteSetting.stubs(:use_https).returns(false)
end
it "rewrites the href to have http" do
frag = html_fragment('<a href="//test.localhost/discourse">hello</a>')
expect(frag.at('a')['href']).to eq("http://test.localhost/discourse")
end
it "rewrites the href for attachment files to have http" do
frag = html_fragment('<a class="attachment" href="//try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt">attachment_file.txt</a>')
expect(frag.at('a')['href']).to eq("http://try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt")
end
it "rewrites the src to have http" do
frag = html_fragment('<img src="//test.localhost/blah.jpg">')
expect(frag.at('img')['src']).to eq("http://test.localhost/blah.jpg")
end
end
context "with https" do
before do
SiteSetting.stubs(:use_https).returns(true)
end
it "rewrites the forum URL to have https" do
frag = html_fragment('<a href="//test.localhost/discourse">hello</a>')
expect(frag.at('a')['href']).to eq("https://test.localhost/discourse")
end
it "rewrites the href for attachment files to have https" do
frag = html_fragment('<a class="attachment" href="//try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt">attachment_file.txt</a>')
expect(frag.at('a')['href']).to eq("https://try-discourse.global.ssl.fastly.net/uploads/default/368/40b610b0aa90cfcf.txt")
end
it "rewrites the src to have https" do
frag = html_fragment('<img src="//test.localhost/blah.jpg">')
expect(frag.at('img')['src']).to eq("https://test.localhost/blah.jpg")
end
end
end
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context "strip_avatars_and_emojis" do
it "works for lonesome emoji with no title" do
emoji = "<img src='/images/emoji/emoji_one/crying_cat_face.png'>"
style = Email::Styles.new(emoji)
style.strip_avatars_and_emojis
expect(style.to_html).to match_html(emoji)
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end
it "works for lonesome emoji with title" do
emoji = "<img title='cry_cry' src='/images/emoji/emoji_one/crying_cat_face.png'>"
style = Email::Styles.new(emoji)
style.strip_avatars_and_emojis
expect(style.to_html).to match_html("cry_cry")
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end
end
end