debian-mirror-gitlab/spec/models/concerns/cache_markdown_field_spec.rb

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# frozen_string_literal: true
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require 'spec_helper'
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describe CacheMarkdownField, :clean_gitlab_redis_cache do
let(:ar_class) do
Class.new(ActiveRecord::Base) do
self.table_name = 'issues'
include CacheMarkdownField
cache_markdown_field :title, pipeline: :single_line
cache_markdown_field :description
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end
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end
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let(:other_class) do
Class.new do
include CacheMarkdownField
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def initialize(args = {})
@title, @description, @cached_markdown_version = args[:title], args[:description], args[:cached_markdown_version]
@title_html, @description_html = args[:title_html], args[:description_html]
@author, @project = args[:author], args[:project]
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end
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attr_accessor :title, :description, :cached_markdown_version
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cache_markdown_field :title, pipeline: :single_line
cache_markdown_field :description
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def cache_key
"cache-key"
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end
end
end
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let(:markdown) { '`Foo`' }
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let(:html) { '<p data-sourcepos="1:1-1:5" dir="auto"><code>Foo</code></p>' }
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let(:updated_markdown) { '`Bar`' }
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let(:updated_html) { '<p data-sourcepos="1:1-1:5" dir="auto"><code>Bar</code></p>' }
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let(:cache_version) { Gitlab::MarkdownCache::CACHE_COMMONMARK_VERSION << 16 }
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def thing_subclass(klass, extra_attribute)
Class.new(klass) { attr_accessor(extra_attribute) }
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end
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shared_examples 'a class with cached markdown fields' do
describe '#cached_html_up_to_date?' do
let(:thing) { klass.new(title: markdown, title_html: html, cached_markdown_version: cache_version) }
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subject { thing.cached_html_up_to_date?(:title) }
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it 'returns false when the version is absent' do
thing.cached_markdown_version = nil
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is_expected.to be_falsy
end
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it 'returns false when the version is too early' do
thing.cached_markdown_version -= 1
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is_expected.to be_falsy
end
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it 'returns false when the version is too late' do
thing.cached_markdown_version += 1
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is_expected.to be_falsy
end
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it 'returns false when the local version was bumped' do
allow(Gitlab::CurrentSettings.current_application_settings).to receive(:local_markdown_version).and_return(2)
thing.cached_markdown_version = cache_version
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is_expected.to be_falsy
end
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it 'returns true when the local version is default' do
thing.cached_markdown_version = cache_version
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is_expected.to be_truthy
end
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it 'returns true when the cached version is just right' do
allow(Gitlab::CurrentSettings.current_application_settings).to receive(:local_markdown_version).and_return(2)
thing.cached_markdown_version = cache_version + 2
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is_expected.to be_truthy
end
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end
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describe '#latest_cached_markdown_version' do
let(:thing) { klass.new }
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subject { thing.latest_cached_markdown_version }
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it 'returns default version' do
thing.cached_markdown_version = nil
is_expected.to eq(cache_version)
end
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end
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describe '#refresh_markdown_cache' do
let(:thing) { klass.new(description: markdown, description_html: html, cached_markdown_version: cache_version) }
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before do
thing.description = updated_markdown
end
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it 'fills all html fields' do
thing.refresh_markdown_cache
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expect(thing.description_html).to eq(updated_html)
end
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it 'does not save the result' do
expect(thing).not_to receive(:save_markdown)
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thing.refresh_markdown_cache
end
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it 'updates the markdown cache version' do
thing.cached_markdown_version = nil
thing.refresh_markdown_cache
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expect(thing.cached_markdown_version).to eq(cache_version)
end
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end
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describe '#refresh_markdown_cache!' do
let(:thing) { klass.new(description: markdown, description_html: html, cached_markdown_version: cache_version) }
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before do
thing.description = updated_markdown
end
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it 'fills all html fields' do
thing.refresh_markdown_cache!
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expect(thing.description_html).to eq(updated_html)
end
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it 'saves the changes' do
expect(thing)
.to receive(:save_markdown)
.with("description_html" => updated_html, "title_html" => "", "cached_markdown_version" => cache_version)
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thing.refresh_markdown_cache!
end
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end
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describe '#banzai_render_context' do
let(:thing) { klass.new(title: markdown, title_html: html, cached_markdown_version: cache_version) }
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subject(:context) { thing.banzai_render_context(:title) }
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it 'sets project to nil if the object lacks a project' do
is_expected.to have_key(:project)
expect(context[:project]).to be_nil
end
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it 'excludes author if the object lacks an author' do
is_expected.not_to have_key(:author)
end
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it 'raises if the context for an unrecognised field is requested' do
expect { thing.banzai_render_context(:not_found) }.to raise_error(ArgumentError)
end
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it 'includes the pipeline' do
title_context = thing.banzai_render_context(:title)
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expect(title_context[:pipeline]).to eq(:single_line)
end
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it 'returns copies of the context template' do
template = thing.cached_markdown_fields[:description]
copy = thing.banzai_render_context(:description)
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expect(copy).not_to be(template)
end
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context 'with a project' do
let(:project) { build(:project, group: create(:group)) }
let(:thing) { thing_subclass(klass, :project).new(title: markdown, title_html: html, project: project) }
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it 'sets the project in the context' do
is_expected.to have_key(:project)
expect(context[:project]).to eq(project)
end
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end
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context 'with an author' do
let(:thing) { thing_subclass(klass, :author).new(title: markdown, title_html: html, author: :author_value) }
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it 'sets the author in the context' do
is_expected.to have_key(:author)
expect(context[:author]).to eq(:author_value)
end
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end
end
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describe '#updated_cached_html_for' do
let(:thing) { klass.new(description: markdown, description_html: html, cached_markdown_version: cache_version) }
context 'when the markdown cache is outdated' do
before do
thing.cached_markdown_version += 1
end
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it 'calls #refresh_markdown_cache!' do
expect(thing).to receive(:refresh_markdown_cache!)
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expect(thing.updated_cached_html_for(:description)).to eq(html)
end
end
context 'when the markdown field does not exist' do
it 'returns nil' do
expect(thing.updated_cached_html_for(:something)).to eq(nil)
end
end
context 'when the markdown cache is up to date' do
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before do
thing.try(:save)
end
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it 'does not call #refresh_markdown_cache!' do
expect(thing).not_to receive(:refresh_markdown_cache!)
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expect(thing.updated_cached_html_for(:description)).to eq(html)
end
end
end
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describe '#rendered_field_content' do
let(:thing) { klass.new(description: markdown, description_html: nil, cached_markdown_version: cache_version) }
context 'when a field can be cached' do
it 'returns the html' do
thing.description = updated_markdown
expect(thing.rendered_field_content(:description)).to eq updated_html
end
end
context 'when a field cannot be cached' do
it 'returns nil' do
allow(thing).to receive(:can_cache_field?).with(:description).and_return false
expect(thing.rendered_field_content(:description)).to eq nil
end
end
end
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end
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context 'for Active record classes' do
let(:klass) { ar_class }
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it_behaves_like 'a class with cached markdown fields'
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describe '#attribute_invalidated?' do
let(:thing) { klass.create(description: markdown, description_html: html, cached_markdown_version: cache_version) }
it 'returns true when cached_markdown_version is different' do
thing.cached_markdown_version += 1
expect(thing.attribute_invalidated?(:description_html)).to eq(true)
end
it 'returns true when markdown is changed' do
thing.description = updated_markdown
expect(thing.attribute_invalidated?(:description_html)).to eq(true)
end
it 'returns true when both markdown and HTML are changed' do
thing.description = updated_markdown
thing.description_html = updated_html
expect(thing.attribute_invalidated?(:description_html)).to eq(true)
end
it 'returns false when there are no changes' do
expect(thing.attribute_invalidated?(:description_html)).to eq(false)
end
end
context 'when cache version is updated' do
let(:old_version) { cache_version - 1 }
let(:old_html) { '<p data-sourcepos="1:1-1:5" dir="auto" class="some-old-class"><code>Foo</code></p>' }
let(:thing) do
# This forces the record to have outdated HTML. We can't use `create` because the `before_create` hook
# would re-render the HTML to the latest version
klass.create.tap do |thing|
thing.update_columns(description: markdown, description_html: old_html, cached_markdown_version: old_version)
end
end
it 'correctly updates cached HTML even if refresh_markdown_cache is called before updating the attribute' do
thing.refresh_markdown_cache
thing.update(description: updated_markdown)
expect(thing.description_html).to eq(updated_html)
end
end
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end
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context 'for other classes' do
let(:klass) { other_class }
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it_behaves_like 'a class with cached markdown fields'
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end
end