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capybara-webkit/spec/server_spec.rb
2017-11-09 08:10:04 -08:00

153 lines
4.3 KiB
Ruby

require "spec_helper"
require "capybara/webkit/server"
describe Capybara::Webkit::Connection do
it "ensures the process ends when the parent process ends", skip_on_windows: true, skip_on_jruby: true do
sleep 1 # Without this sleep popen3 hangs on OSX when running the tests - not really sure why
read_io, write_io = IO.pipe
fork_pid = fork do
read_io.close
server = start_server
write_io.write(server.pid)
write_io.close
Process.wait(server.pid)
end
write_io.close
webkit_pid = read_io.read.to_i
expect(webkit_pid).to be > 1
read_io.close
Process.kill(9, fork_pid)
eventually do
expect { Process.getpgid(webkit_pid) }.to raise_error Errno::ESRCH
end
end
it "shouldn't output extraneous warnings when exiting", skip_on_windows: true do
output_str, status = Open3.capture2e("rspec spec/fixtures/exit_text.rb")
expect(status.exitstatus).to eq(0)
expect(output_str).not_to include("AsynchronousCloseException")
end
it "raises an error if the server has stopped", skip_on_windows: true do
path = "false"
stub_const("Capybara::Webkit::Server::SERVER_PATH", path)
expect { start_server }.
to raise_error(
Capybara::Webkit::ConnectionError,
"#{path} failed to start.")
end
it "raises an error if the server is not ready", skip_on_windows: true do
server_path = File.expand_path(File.join(__FILE__, "..", "fixtures", "fake_server.sh"))
stub_const("Capybara::Webkit::Server::SERVER_PATH", server_path)
start_timeout = 0.5
stub_const(
"Capybara::Webkit::Server::WEBKIT_SERVER_START_TIMEOUT",
start_timeout,
)
error_string =
"#{server_path} failed to start after #{start_timeout} seconds."
expect { start_server }.
to raise_error(Capybara::Webkit::ConnectionError, error_string)
end
it "boots a server to talk to" do
url = "http://#{@rack_server.host}:#{@rack_server.port}/"
server = start_server
socket = connect_to(server)
socket.puts "Visit"
socket.puts 1
socket.puts url.to_s.bytesize
socket.print url
expect(socket.gets).to eq "ok\n"
expect(socket.gets).to eq "0\n"
socket.puts "Body"
socket.puts 0
expect(socket.gets).to eq "ok\n"
response_length = socket.gets.to_i
response = socket.read(response_length)
expect(response).to include("Hey there")
end
it "forwards stderr to the given IO object" do
read_io, write_io = IO.pipe
server = start_server(stderr: write_io)
socket = connect_to(server)
socket.puts "EnableLogging"
socket.puts 0
script = "console.log('hello world')"
socket.puts "Execute"
socket.puts 1
socket.puts script.to_s.bytesize
socket.print script
expect(read_io).to include_response /\n\d{2}:\d{2}:\d{2}\.\d{3} hello world/
end
it "does not forward stderr to nil" do
expect(IO).not_to receive(:copy_stream)
start_server(stderr: nil)
end
it "prints a deprecation warning if the stdout option is used" do
expect_any_instance_of(Capybara::Webkit::Server).to receive(:warn)
start_server(stdout: nil)
end
it "does not forward stdout to nil if the stdout option is used" do
allow_any_instance_of(Capybara::Webkit::Server).to receive(:warn)
expect(IO).not_to receive(:copy_stream)
start_server(stdout: nil)
end
it "returns the server port" do
expect(start_server.port).to be_between 0x400, 0xffff
end
it "chooses a new port number for a new connection" do
expect(start_server.port).not_to eq start_server.port
end
before(:all) do
@app = lambda do |_|
body = "<html><body>Hey there</body></html>"
[
200,
{ "Content-Type" => "text/html", "Content-Length" => body.size.to_s },
[body],
]
end
@rack_server = Capybara::Server.new(@app)
@rack_server.boot
end
def start_server(options = {})
Capybara::Webkit::Server.new(options).tap(&:start)
end
def connect_to(server)
TCPSocket.open("127.0.0.1", server.port)
end
def eventually
polling_interval = 0.1
time_limit = Time.now + 3
loop do
begin
yield
return
rescue RSpec::Expectations::ExpectationNotMetError => error
raise error if Time.now >= time_limit
sleep polling_interval
end
end
end
end