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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Banzai::Filter::TruncateVisibleFilter do
include FilterSpecHelper
let_it_be(:project) { build(:project, :repository) }
let_it_be(:max_chars) { 100 }
let_it_be(:user) do
user = create(:user, username: 'gfm')
project.add_maintainer(user)
user
end
# Since we're truncating nodes of an html document, actually use the
# full pipeline to generate full documents.
def convert_markdown(text, context = {})
Banzai::Pipeline::FullPipeline.to_html(text, { project: project }.merge(context))
end
shared_examples_for 'truncates text' do
specify do
html = convert_markdown(markdown)
doc = filter(html, { truncate_visible_max_chars: max_chars })
expect(doc.to_html).to match(expected)
end
end
describe 'displays inline code' do
let(:markdown) { 'Text with `inline code`' }
let(:expected) { 'Text with <code>inline code</code>' }
it_behaves_like 'truncates text'
end
describe 'truncates the text with multiple paragraphs' do
let(:markdown) { "Paragraph 1\n\nParagraph 2" }
let(:expected) { 'Paragraph 1...' }
it_behaves_like 'truncates text'
end
describe 'truncates the first line of a code block' do
let(:markdown) { "```\nCode block\nwith two lines\n```" }
let(:expected) { "Code block...</span>\n</code>" }
it_behaves_like 'truncates text'
end
describe 'preserves code color scheme' do
let(:max_chars) { 150 }
let(:markdown) { "```ruby\ndef test\n 'hello world'\nend\n```" }
let(:expected) do
'<code><span id="LC1" class="line" lang="ruby">' \
'<span class="k">def</span> <span class="nf">test</span>...</span>'
end
it_behaves_like 'truncates text'
end
describe 'truncates a single long line of text' do
let(:max_chars) { 150 }
let(:text) { 'The quick brown fox jumped over the lazy dog twice' } # 50 chars
let(:markdown) { text * 4 }
let(:expected) { (text * 2).sub(/.{3}/, '...') }
it_behaves_like 'truncates text'
end
it 'preserves a link href when link text is truncated' do
max_chars = 150
text = 'The quick brown fox jumped over the lazy dog' # 44 chars
link_url = 'http://example.com/foo/bar/baz' # 30 chars
markdown = "#{text}#{text}#{text} #{link_url}" # 163 chars
expected_link_text = 'http://example...</a>'
html = convert_markdown(markdown)
doc = filter(html, { truncate_visible_max_chars: max_chars })
expect(doc.to_html).to match(link_url)
expect(doc.to_html).to match(expected_link_text)
end
it 'truncates HTML properly' do
markdown = "@#{user.username}, can you look at this?\nHello world\n"
html = convert_markdown(markdown)
doc = filter(html, { truncate_visible_max_chars: max_chars })
# Make sure we didn't create invalid markup
expect(doc.errors).to be_empty
# Leading user link
expect(doc.css('a').length).to eq(1)
expect(doc.css('a')[0].attr('href')).to eq urls.user_path(user)
expect(doc.css('a')[0].text).to eq "@#{user.username}"
expect(doc.content).to eq "@#{user.username}, can you look at this?..."
end
it 'truncates HTML with emoji properly' do
markdown = "foo :wink:\nbar :grinning:"
# actual = first_line_in_markdown(object, attribute, 100, project: project)
html = convert_markdown(markdown)
doc = filter(html, { truncate_visible_max_chars: max_chars })
# Make sure we didn't create invalid markup
# But also account for the 2 errors caused by the unknown `gl-emoji` elements
expect(doc.errors.length).to eq(2)
expect(doc.css('gl-emoji').length).to eq(2)
expect(doc.css('gl-emoji')[0].attr('data-name')).to eq 'wink'
expect(doc.css('gl-emoji')[1].attr('data-name')).to eq 'grinning'
expect(doc.content).to eq "foo 😉\nbar 😀"
end
it 'does not truncate if truncate_visible_max_chars not specified' do
markdown = "@#{user.username}, can you look at this?\nHello world"
html = convert_markdown(markdown)
doc = filter(html)
expect(doc.content).to eq markdown
end
end
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