diff options
Diffstat (limited to 'actioncable/test/client_test.rb')
| -rw-r--r-- | actioncable/test/client_test.rb | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/actioncable/test/client_test.rb b/actioncable/test/client_test.rb new file mode 100644 index 0000000000..1b07689127 --- /dev/null +++ b/actioncable/test/client_test.rb @@ -0,0 +1,223 @@ +require 'test_helper' +require 'concurrent' + +require 'active_support/core_ext/hash/indifferent_access' +require 'pathname' + +require 'faye/websocket' +require 'json' + +class ClientTest < ActionCable::TestCase + WAIT_WHEN_EXPECTING_EVENT = 3 + WAIT_WHEN_NOT_EXPECTING_EVENT = 0.2 + + def setup + ActionCable.instance_variable_set(:@server, nil) + server = ActionCable.server + server.config.logger = Logger.new(StringIO.new).tap { |l| l.level = Logger::UNKNOWN } + + server.config.cable = { adapter: 'async' }.with_indifferent_access + + # and now the "real" setup for our test: + server.config.disable_request_forgery_protection = true + server.config.channel_paths = [ File.expand_path('client/echo_channel.rb', __dir__) ] + + Thread.new { EventMachine.run } unless EventMachine.reactor_running? + Thread.pass until EventMachine.reactor_running? + + # faye-websocket is warning-rich + @previous_verbose, $VERBOSE = $VERBOSE, nil + end + + def teardown + $VERBOSE = @previous_verbose + end + + def with_puma_server(rack_app = ActionCable.server, port = 3099) + server = ::Puma::Server.new(rack_app, ::Puma::Events.strings) + server.add_tcp_listener '127.0.0.1', port + server.min_threads = 1 + server.max_threads = 4 + + t = Thread.new { server.run.join } + yield port + + ensure + server.stop(true) if server + t.join if t + end + + class SyncClient + attr_reader :pings + + def initialize(port) + @ws = Faye::WebSocket::Client.new("ws://127.0.0.1:#{port}/") + @messages = Queue.new + @closed = Concurrent::Event.new + @has_messages = Concurrent::Semaphore.new(0) + @pings = 0 + + open = Concurrent::Event.new + error = nil + + @ws.on(:error) do |event| + if open.set? + @messages << RuntimeError.new(event.message) + else + error = event.message + open.set + end + end + + @ws.on(:open) do |event| + open.set + end + + @ws.on(:message) do |event| + hash = JSON.parse(event.data) + if hash['identifier'] == '_ping' + @pings += 1 + else + @messages << hash + @has_messages.release + end + end + + @ws.on(:close) do |event| + @closed.set + end + + open.wait(WAIT_WHEN_EXPECTING_EVENT) + raise error if error + end + + def read_message + @has_messages.try_acquire(1, WAIT_WHEN_EXPECTING_EVENT) + + msg = @messages.pop(true) + raise msg if msg.is_a?(Exception) + + msg + end + + def read_messages(expected_size = 0) + list = [] + loop do + if @has_messages.try_acquire(1, list.size < expected_size ? WAIT_WHEN_EXPECTING_EVENT : WAIT_WHEN_NOT_EXPECTING_EVENT) + msg = @messages.pop(true) + raise msg if msg.is_a?(Exception) + + list << msg + else + break + end + end + list + end + + def send_message(hash) + @ws.send(JSON.dump(hash)) + end + + def close + sleep WAIT_WHEN_NOT_EXPECTING_EVENT + + unless @messages.empty? + raise "#{@messages.size} messages unprocessed" + end + + @ws.close + @closed.wait(WAIT_WHEN_EXPECTING_EVENT) + end + end + + def faye_client(port) + SyncClient.new(port) + end + + def test_single_client + with_puma_server do |port| + c = faye_client(port) + c.send_message command: 'subscribe', identifier: JSON.dump(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'ding', message: 'hello') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "message"=>{"dong"=>"hello"}}, c.read_message) + c.close + end + end + + def test_interacting_clients + with_puma_server do |port| + clients = 10.times.map { faye_client(port) } + + barrier_1 = Concurrent::CyclicBarrier.new(clients.size) + barrier_2 = Concurrent::CyclicBarrier.new(clients.size) + + clients.map {|c| Concurrent::Future.execute { + c.send_message command: 'subscribe', identifier: JSON.dump(channel: 'EchoChannel') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + barrier_1.wait WAIT_WHEN_EXPECTING_EVENT + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'bulk', message: 'hello') + barrier_2.wait WAIT_WHEN_EXPECTING_EVENT + assert_equal clients.size, c.read_messages(clients.size).size + } }.each(&:wait!) + + clients.map {|c| Concurrent::Future.execute { c.close } }.each(&:wait!) + end + end + + def test_many_clients + with_puma_server do |port| + clients = 100.times.map { faye_client(port) } + + clients.map {|c| Concurrent::Future.execute { + c.send_message command: 'subscribe', identifier: JSON.dump(channel: 'EchoChannel') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + } }.each(&:wait!) + + clients.map {|c| Concurrent::Future.execute { c.close } }.each(&:wait!) + end + end + + def test_disappearing_client + with_puma_server do |port| + c = faye_client(port) + c.send_message command: 'subscribe', identifier: JSON.dump(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'delay', message: 'hello') + c.close # disappear before write + + c = faye_client(port) + c.send_message command: 'subscribe', identifier: JSON.dump(channel: 'EchoChannel') + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + c.send_message command: 'message', identifier: JSON.dump(channel: 'EchoChannel'), data: JSON.dump(action: 'ding', message: 'hello') + assert_equal({"identifier"=>'{"channel":"EchoChannel"}', "message"=>{"dong"=>"hello"}}, c.read_message) + c.close # disappear before read + end + end + + def test_unsubscribe_client + with_puma_server do |port| + app = ActionCable.server + identifier = JSON.dump(channel: 'EchoChannel') + + c = faye_client(port) + c.send_message command: 'subscribe', identifier: identifier + assert_equal({"identifier"=>"{\"channel\":\"EchoChannel\"}", "type"=>"confirm_subscription"}, c.read_message) + assert_equal(1, app.connections.count) + assert(app.remote_connections.where(identifier: identifier)) + + channel = app.connections.first.subscriptions.send(:subscriptions).first[1] + channel.expects(:unsubscribed) + c.close + sleep 0.1 # Data takes a moment to process + + # All data is removed: No more connection or subscription information! + assert_equal(0, app.connections.count) + end + end +end |