discourse/spec/controllers/stylesheets_controller_spec.rb

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require 'rails_helper'
describe StylesheetsController do
it 'can survive cache miss' do
StylesheetCache.destroy_all
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builder = DiscourseStylesheets.new('desktop_rtl')
builder.compile
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builder.ensure_digestless_file
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digest = StylesheetCache.first.digest
StylesheetCache.destroy_all
# digestless
get :show, name: 'desktop_rtl'
expect(response).to be_success
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StylesheetCache.destroy_all
get :show, name: "desktop_rtl_#{digest}"
expect(response).to be_success
cached = StylesheetCache.first
expect(cached.target).to eq 'desktop_rtl'
expect(cached.digest).to eq digest
# tmp folder destruction and cached
`rm #{DiscourseStylesheets.cache_fullpath}/*`
get :show, name: 'desktop_rtl'
expect(response).to be_success
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get :show, name: "desktop_rtl_#{digest}"
expect(response).to be_success
# there is an edge case which is ... disk and db cache is nuked, very unlikely to happen
end
end