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# frozen_string_literal: true
require_relative 'helper'
require 'time'
separate_testing do
require_relative '../lib/rack/etag'
require_relative '../lib/rack/lint'
require_relative '../lib/rack/mock_request'
end
describe Rack::ETag do
def etag(app, *args)
Rack::Lint.new Rack::ETag.new(app, *args)
end
def request
Rack::MockRequest.env_for
end
def sendfile_body
File.new(File::NULL)
end
it "set etag if none is set if status is 200" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['etag'].must_equal "W/\"dffd6021bb2bd5b0af676290809ec3a5\""
end
it "returns a valid response body when using a linted app" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(Rack::Lint.new(app)).call(request)
response[1]['etag'].must_equal "W/\"dffd6021bb2bd5b0af676290809ec3a5\""
response[2].each do |chunk|
chunk.must_equal "Hello, World!"
end
end
it "set etag if none is set if status is 201" do
app = lambda { |env| [201, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['etag'].must_equal "W/\"dffd6021bb2bd5b0af676290809ec3a5\""
end
it "set cache-control to 'max-age=0, private, must-revalidate' (default) if none is set" do
app = lambda { |env| [201, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['cache-control'].must_equal 'max-age=0, private, must-revalidate'
end
it "set cache-control to chosen one if none is set" do
app = lambda { |env| [201, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(app, nil, 'public').call(request)
response[1]['cache-control'].must_equal 'public'
end
it "set a given cache-control even if digest could not be calculated" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, []] }
response = etag(app, 'no-cache').call(request)
response[1]['cache-control'].must_equal 'no-cache'
end
it "not set cache-control if it is already set" do
app = lambda { |env| [201, { 'content-type' => 'text/plain', 'cache-control' => 'public' }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['cache-control'].must_equal 'public'
end
it "not set cache-control if directive isn't present" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, ["Hello, World!"]] }
response = etag(app, nil, nil).call(request)
response[1]['cache-control'].must_be_nil
end
it "not change etag if it is already set" do
app = lambda { |env| [200, { 'content-type' => 'text/plain', 'etag' => '"abc"' }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['etag'].must_equal "\"abc\""
end
it "not set etag if body is empty" do
app = lambda { |env| [200, { 'content-type' => 'text/plain', 'last-modified' => Time.now.httpdate }, []] }
response = etag(app).call(request)
response[1]['etag'].must_be_nil
end
it "set handle empty body parts" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, ["Hello", "", ", World!"]] }
response = etag(app).call(request)
response[1]['etag'].must_equal "W/\"dffd6021bb2bd5b0af676290809ec3a5\""
end
it "not set etag if last-modified is set" do
app = lambda { |env| [200, { 'content-type' => 'text/plain', 'last-modified' => Time.now.httpdate }, ["Hello, World!"]] }
response = etag(app).call(request)
response[1]['etag'].must_be_nil
end
it "not set etag if a sendfile_body is given" do
app = lambda { |env| [200, { 'content-type' => 'text/plain' }, sendfile_body] }
response = etag(app).call(request)
response[1]['etag'].must_be_nil
end
it "not set etag if a status is not 200 or 201" do
app = lambda { |env| [401, { 'content-type' => 'text/plain' }, ['Access denied.']] }
response = etag(app).call(request)
response[1]['etag'].must_be_nil
end
it "set etag even if no-cache is given" do
app = lambda { |env| [200, { 'content-type' => 'text/plain', 'cache-control' => 'no-cache, must-revalidate' }, ['Hello, World!']] }
response = etag(app).call(request)
response[1]['etag'].must_equal "W/\"dffd6021bb2bd5b0af676290809ec3a5\""
end
it "close the original body" do
body = StringIO.new
app = lambda { |env| [200, {}, body] }
response = etag(app).call(request)
body.wont_be :closed?
response[2].close
body.must_be :closed?
end
end
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