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The default behavior for Rails is to vary the response of an endpoint based on the `Accept:` header, and therefore it returns a `Vary:` header on responses. This instructs browsers and intermediate proxies to key their caches based on the value of the request's `Accept` header. In some cases (e.g. Akamai), the presence of a `Vary` header is enough to prevent caching entirely. This commit restructures the Rails route definitions so that: 1. The "format" segment of the route is 'required' 2. The "format" segment of the route is constrained to a single value (e.g. `js` or `css`) Now that the routes are guaranteed to have a `:format` segment, Rails will always prioritize that over the `Accept` header, and will therefore omit the `Vary` header. Request specs are also added to test this behaviour for both stylesheets and theme-javascripts.
108 lines
3.5 KiB
Ruby
108 lines
3.5 KiB
Ruby
# frozen_string_literal: true
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RSpec.describe StylesheetsController do
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it 'can survive cache miss' do
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StylesheetCache.destroy_all
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manager = Stylesheet::Manager.new(theme_id: nil)
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builder = Stylesheet::Manager::Builder.new(target: 'desktop_rtl', manager: manager, theme: nil)
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builder.compile
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digest = StylesheetCache.first.digest
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StylesheetCache.destroy_all
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get "/stylesheets/desktop_rtl_#{digest}.css"
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expect(response.status).to eq(200)
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cached = StylesheetCache.first
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expect(cached.target).to eq 'desktop_rtl'
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expect(cached.digest).to eq digest
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# tmp folder destruction and cached
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`rm -rf #{Stylesheet::Manager.cache_fullpath}`
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get "/stylesheets/desktop_rtl_#{digest}.css"
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expect(response.status).to eq(200)
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# there is an edge case which is ... disk and db cache is nuked, very unlikely to happen
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end
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it 'can lookup theme specific css' do
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scheme = ColorScheme.create_from_base(name: "testing", colors: [])
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theme = Fabricate(:theme, color_scheme_id: scheme.id)
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manager = Stylesheet::Manager.new(theme_id: theme.id)
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builder = Stylesheet::Manager::Builder.new(target: :desktop, theme: theme, manager: manager)
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builder.compile
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`rm -rf #{Stylesheet::Manager.cache_fullpath}`
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get "/stylesheets/#{builder.stylesheet_filename.sub(".css", "")}.css"
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expect(response.status).to eq(200)
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get "/stylesheets/#{builder.stylesheet_filename_no_digest.sub(".css", "")}.css"
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expect(response.status).to eq(200)
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builder = Stylesheet::Manager::Builder.new(target: :desktop_theme, theme: theme, manager: manager)
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builder.compile
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`rm -rf #{Stylesheet::Manager.cache_fullpath}`
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get "/stylesheets/#{builder.stylesheet_filename.sub(".css", "")}.css"
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expect(response.status).to eq(200)
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get "/stylesheets/#{builder.stylesheet_filename_no_digest.sub(".css", "")}.css"
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expect(response.status).to eq(200)
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end
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it 'ignores Accept header and does not include Vary header' do
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StylesheetCache.destroy_all
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manager = Stylesheet::Manager.new(theme_id: nil)
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builder = Stylesheet::Manager::Builder.new(target: 'desktop', manager: manager, theme: nil)
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builder.compile
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digest = StylesheetCache.first.digest
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get "/stylesheets/desktop_#{digest}.css"
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expect(response.status).to eq(200)
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expect(response.headers["Content-Type"]).to eq("text/css")
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expect(response.headers["Vary"]).to eq(nil)
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get "/stylesheets/desktop_#{digest}.css", headers: { "Accept" => "text/html" }
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expect(response.status).to eq(200)
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expect(response.headers["Content-Type"]).to eq("text/css")
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expect(response.headers["Vary"]).to eq(nil)
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get "/stylesheets/desktop_#{digest}.css", headers: { "Accept" => "invalidcontenttype" }
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expect(response.status).to eq(200)
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expect(response.headers["Content-Type"]).to eq("text/css")
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expect(response.headers["Vary"]).to eq(nil)
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end
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describe "#color_scheme" do
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it 'works as expected' do
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scheme = ColorScheme.last
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get "/color-scheme-stylesheet/#{scheme.id}.json"
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expect(response.status).to eq(200)
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json = JSON.parse(response.body)
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expect(json["color_scheme_id"]).to eq(scheme.id)
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end
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it 'works with a theme parameter' do
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scheme = ColorScheme.last
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theme = Theme.last
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get "/color-scheme-stylesheet/#{scheme.id}/#{theme.id}.json"
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expect(response.status).to eq(200)
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json = JSON.parse(response.body)
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expect(json["color_scheme_id"]).to eq(scheme.id)
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end
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end
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end
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