debian-mirror-gitlab/spec/lib/banzai/renderer_spec.rb

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# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Banzai::Renderer do
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let(:renderer) { described_class }
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def fake_object(fresh:)
object = double('object')
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allow(object).to receive(:respond_to?).with(:cached_markdown_fields).and_return(true)
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allow(object).to receive(:cached_html_up_to_date?).with(:field).and_return(fresh)
allow(object).to receive(:cached_html_for).with(:field).and_return('field_html')
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object
end
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def fake_cacheless_object
object = double('cacheless object')
allow(object).to receive(:respond_to?).with(:cached_markdown_fields).and_return(false)
object
end
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describe '#cache_collection_render' do
let(:merge_request) { fake_object(fresh: true) }
let(:context) { { cache_key: [merge_request, 'field'], rendered: merge_request.field_html } }
context 'when an item has a rendered field' do
before do
allow(merge_request).to receive(:field).and_return('This is the field')
allow(merge_request).to receive(:field_html).and_return('This is the field')
end
it 'does not touch redis if the field is in the cache' do
expect(Rails).not_to receive(:cache)
described_class.cache_collection_render([{ text: merge_request.field, context: context }])
end
end
end
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describe '#render_field' do
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context 'without cache' do
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let(:commit) { fake_cacheless_object }
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it 'returns cacheless render field' do
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expect(renderer).to receive(:cacheless_render_field).with(commit, :field, {})
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renderer.render_field(commit, :field)
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end
end
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context 'with cache' do
subject { renderer.render_field(object, :field) }
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context 'with a stale cache' do
let(:object) { fake_object(fresh: false) }
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it 'caches and returns the result' do
expect(object).to receive(:refresh_markdown_cache!)
is_expected.to eq('field_html')
end
it "skips database caching on a GitLab read-only instance" do
allow(Gitlab::Database).to receive(:read_only?).and_return(true)
expect(object).to receive(:refresh_markdown_cache!)
is_expected.to eq('field_html')
end
end
context 'with an up-to-date cache' do
let(:object) { fake_object(fresh: true) }
it 'uses the cache' do
expect(object).to receive(:refresh_markdown_cache!).never
is_expected.to eq('field_html')
end
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end
end
end
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describe '#cacheless_render' do
context 'without cache' do
let(:object) { fake_object(fresh: false) }
let(:histogram) { double('prometheus histogram') }
it 'returns cacheless render field' do
allow(renderer).to receive(:render_result).and_return(output: 'test')
allow(renderer).to receive(:real_duration_histogram).and_return(histogram)
allow(renderer).to receive(:cpu_duration_histogram).and_return(histogram)
expect(renderer).to receive(:render_result).with('test', {})
expect(histogram).to receive(:observe).twice
renderer.cacheless_render('test')
end
end
end
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describe '#post_process' do
let(:context_options) { {} }
let(:html) { 'Consequatur aperiam et nesciunt modi aut assumenda quo id. '}
let(:post_processed_html) { double(html_safe: 'safe doc') }
let(:doc) { double(to_html: post_processed_html) }
subject { renderer.post_process(html, context_options) }
context 'when xhtml' do
let(:context_options) { { xhtml: ' ' } }
context 'without :post_process_pipeline key' do
it 'uses PostProcessPipeline' do
expect(::Banzai::Pipeline::PostProcessPipeline).to receive(:to_document).and_return(doc)
subject
end
end
context 'with :post_process_pipeline key' do
let(:context_options) { { post_process_pipeline: Object, xhtml: ' ' } }
it 'uses passed post process pipeline' do
expect(Object).to receive(:to_document).and_return(doc)
subject
end
end
end
context 'when not xhtml' do
context 'without :post_process_pipeline key' do
it 'uses PostProcessPipeline' do
expect(::Banzai::Pipeline::PostProcessPipeline).to receive(:to_html)
.with(html, { only_path: true, disable_asset_proxy: true })
.and_return(post_processed_html)
subject
end
end
context 'with :post_process_pipeline key' do
let(:context_options) { { post_process_pipeline: Object } }
it 'uses passed post process pipeline' do
expect(Object).to receive(:to_html).and_return(post_processed_html)
subject
end
end
end
end
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end