debian-mirror-gitlab/spec/features/markdown/mermaid_spec.rb

225 lines
20 KiB
Ruby
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# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe 'Mermaid rendering', :js do
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it 'renders Mermaid diagrams correctly' do
description = <<~MERMAID
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
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wait_for_requests
wait_for_mermaid
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%w[A B C D].each do |label|
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expect(page).to have_selector('svg text', text: label)
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end
end
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it 'renders linebreaks in Mermaid diagrams' do
description = <<~MERMAID
```mermaid
graph TD;
A(Line 1<br>Line 2)-->B(Line 1<br/>Line 2);
C(Line 1<br />Line 2)-->D(Line 1<br />Line 2);
```
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
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wait_for_requests
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wait_for_mermaid
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expected = '<text style=""><tspan xml:space="preserve" dy="1em" x="1">Line 1</tspan><tspan xml:space="preserve" dy="1em" x="1">Line 2</tspan></text>'
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expect(page.html.scan(expected).count).to be(4)
end
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it 'renders only 2 Mermaid blocks and ', :js, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/234081' } do
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description = <<~MERMAID
```mermaid
graph LR
A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A
```
```mermaid
graph LR
A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A
```
```mermaid
graph LR
A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A;A-->B;B-->A
```
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
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wait_for_requests
wait_for_mermaid
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page.within('.description') do
expect(page).to have_selector('svg')
expect(page).to have_selector('pre.mermaid')
end
end
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it 'correctly sizes mermaid diagram inside <details> block', :js do
description = <<~MERMAID
<details>
<summary>Click to show diagram</summary>
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```
</details>
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
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wait_for_requests
wait_for_mermaid
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page.within('.description') do
page.find('summary').click
svg = page.find('svg.mermaid')
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expect(svg[:style]).to match(/max-width/)
expect(svg[:width].to_i).to eq(100)
expect(svg[:height].to_i).to eq(0)
end
end
it 'correctly sizes mermaid diagram block', :js do
description = <<~MERMAID
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
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wait_for_requests
wait_for_mermaid
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expect(page).to have_css('svg.mermaid[style*="max-width"][width="100%"]')
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end
it 'display button when diagram exceeds length', :js do
graph_edges = "A-->B;B-->A;" * 420
description = <<~MERMAID
```mermaid
graph LR
#{graph_edges}
```
MERMAID
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
page.within('.description') do
expect(page).not_to have_selector('svg')
expect(page).to have_selector('pre.mermaid')
expect(page).to have_selector('.lazy-alert-shown')
expect(page).to have_selector('.js-lazy-render-mermaid-container')
end
wait_for_requests
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wait_for_mermaid
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find('.js-lazy-render-mermaid').click
page.within('.description') do
expect(page).to have_selector('svg')
expect(page).not_to have_selector('.js-lazy-render-mermaid-container')
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end
end
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it 'does not render more than 50 mermaid blocks', :js, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/234081' } do
graph_edges = "A-->B;B-->A;"
description = <<~MERMAID
```mermaid
graph LR
#{graph_edges}
```
MERMAID
description *= 51
project = create(:project, :public)
issue = create(:issue, project: project, description: description)
visit project_issue_path(project, issue)
wait_for_requests
wait_for_mermaid
page.within('.description') do
expect(page).to have_selector('svg')
expect(page).to have_selector('.lazy-alert-shown')
expect(page).to have_selector('.js-lazy-render-mermaid-container')
end
end
end
def wait_for_mermaid
run_idle_callback = <<~RUN_IDLE_CALLBACK
window.requestIdleCallback(() => {
window.__CAPYBARA_IDLE_CALLBACK_EXEC__ = 1;
})
RUN_IDLE_CALLBACK
page.evaluate_script(run_idle_callback)
Timeout.timeout(Capybara.default_max_wait_time) do
loop until finished_rendering?
end
end
def finished_rendering?
check_idle_callback = <<~CHECK_IDLE_CALLBACK
window.__CAPYBARA_IDLE_CALLBACK_EXEC__
CHECK_IDLE_CALLBACK
page.evaluate_script(check_idle_callback) == 1
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end