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test_app.rb
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test_app.rb
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#
# A tiny Rack application for testing the Mizuno webserver. Each of the
# following paths can be used to test webserver behavior:
#
# /ping:: Always returns 200 OK.
#
# /error/:number:: Returns the HTTP status code specified in the path.
#
# /echo:: Returns a plaintext rendering of the original request.
#
# /file:: Returns a file for downloading.
#
# /push:: Publishes a message to async listeners.
#
# /pull:: Recieves messages sent via /push using async.
#
# A request to any endpoint not listed above will return a 404 error.
#
class TestApp
def initialize
@subscribers = Array.new
end
def call(env)
begin
request = Rack::Request.new(env)
method = request.path[/^\/(\w+)/, 1]
return(error(request, 404)) if (method.nil? or method.empty?)
return(error(request, 404)) unless respond_to?(method.to_sym)
send(method.to_sym, request)
rescue => error
puts error
puts error.backtrace
error(nil, 500)
end
end
def ping(request)
[ 200, { "Content-Type" => "text/plain",
"Content-Length" => "2" }, [ "OK" ] ]
end
def error(request, code = nil)
code ||= (request.path[/^\/\w+\/(\d+)/, 1] or "500")
[ code.to_i, { "Content-Type" => "text/plain",
"Content-Length" => "5" }, [ "ERROR" ] ]
end
def echo(request)
response = Rack::Response.new
env = request.env.merge('request.params' => request.params)
response.write(env.to_yaml)
response.finish
end
def push(request)
message = request.params['message']
@subscribers.reject! do |subscriber|
begin
response = Rack::Response.new
if(message.empty?)
subscriber.call(response.finish)
next(true)
else
response.write(message)
subscriber.call(response.finish)
next(false)
end
rescue java.io.IOException => error
next(true)
end
end
ping(request)
end
def pull(request)
@subscribers << request.env['async.callback']
throw(:async)
end
def download(request)
file = File.new('spec/data/reddit-icon.png', 'r')
response = Rack::Response.new(file)
response['Content-Type'] = 'image/png'
response['Content-Disposition'] = \
'attachment; filename=reddit-icon.png'
response.finish
end
def upload(request)
data = request.params['file'][:tempfile].read
checksum = Digest::MD5.hexdigest(Base64.decode64(data))
response = Rack::Response.new
response.write(checksum)
response.finish
end
end