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require 'spec_helper'
module ZMQ
describe Poller do
context "when initializing" do
include APIHelper
it "should allocate a PollItems instance" do
PollItems.should_receive(:new)
Poller.new
end
end
context "#register" do
let(:pollable) { double('pollable') }
let(:poller) { Poller.new }
let(:socket) { FFI::MemoryPointer.new(4) }
let(:io) { double(:posix_fileno => fd) }
let(:fd) { 1 }
it "returns false when given a nil pollable" do
poller.register(nil, ZMQ::POLLIN).should be_false
end
it "returns false when given 0 for +events+ (e.g. no registration)" do
poller.register(pollable, 0).should be_false
end
it "returns the default registered event value when given a valid pollable" do
poller.register(pollable).should == (ZMQ::POLLIN | ZMQ::POLLOUT)
end
it "returns the registered event value when given a pollable responding to socket (ZMQ::Socket)" do
pollable.should_receive(:socket).and_return(socket)
poller.register(pollable, ZMQ::POLLIN).should == ZMQ::POLLIN
end
it "returns the registered event value when given a pollable responding to file descriptor (IO, BasicSocket)" do
pollable.should_receive(:posix_fileno).and_return(fd)
poller.register(pollable, ZMQ::POLLIN).should == ZMQ::POLLIN
end
it "returns the registered event value when given a pollable responding to io (SSLSocket)" do
pollable.should_receive(:io).and_return(io)
poller.register(pollable, ZMQ::POLLIN).should == ZMQ::POLLIN
end
end
context "#deregister" do
let(:pollable) { double('pollable') }
let(:poller) { Poller.new }
let(:socket) { FFI::MemoryPointer.new(4) }
let(:io) { double(:posix_fileno => fd) }
let(:fd) { 1 }
it "returns true when deregistered pollable from event" do
pollable.should_receive(:socket).at_least(:once).and_return(socket)
poller.register(pollable)
poller.deregister(pollable, ZMQ::POLLIN).should be_true
end
it "returns false when pollable not registered" do
poller.deregister(pollable, ZMQ::POLLIN).should be_false
end
it "returns false when pollable not registered for deregistered event" do
pollable.should_receive(:socket).at_least(:once).and_return(socket)
poller.register(pollable, ZMQ::POLLOUT)
poller.deregister(pollable, ZMQ::POLLIN).should be_false
end
it "deletes pollable when no events left" do
poller.register(pollable, ZMQ::POLLIN)
poller.deregister(pollable, ZMQ::POLLIN).should be_true
poller.size.should == 0
end
it "deletes closed pollable responding to socket (ZMQ::Socket)" do
pollable.should_receive(:socket).and_return(socket)
poller.register(pollable)
pollable.should_receive(:socket).and_return(nil)
poller.deregister(pollable, ZMQ::POLLIN).should be_true
poller.size.should == 0
end
it "deletes closed pollable responding to fileno (IO, BasicSocket)" do
pollable.should_receive(:posix_fileno).and_return(fd)
poller.register(pollable)
pollable.should_receive(:closed?).and_return(true)
poller.deregister(pollable, ZMQ::POLLIN).should be_true
poller.size.should == 0
end
it "deletes closed pollable responding to io (SSLSocket)" do
pollable.should_receive(:io).at_least(:once).and_return(io)
poller.register(pollable)
io.should_receive(:closed?).and_return(true)
poller.deregister(pollable, ZMQ::POLLIN).should be_true
poller.size.should == 0
end
end
context "#delete" do
before(:all) { @context = Context.new }
after(:all) { @context.terminate }
before(:each) do
@socket = @context.socket(XREQ)
@socket.setsockopt(LINGER, 0)
@poller = Poller.new
end
after(:each) do
@socket.close
end
it "should return false for an unregistered socket (i.e. not found)" do
@poller.delete(@socket).should be_false
end
it "returns true for a sucessfully deleted socket when only 1 is registered" do
socket1 = @context.socket(REP)
socket1.setsockopt(LINGER, 0)
@poller.register socket1
@poller.delete(socket1).should be_true
socket1.close
end
it "returns true for a sucessfully deleted socket when more than 1 is registered" do
socket1 = @context.socket(REP)
socket2 = @context.socket(REP)
socket1.setsockopt(LINGER, 0)
socket2.setsockopt(LINGER, 0)
@poller.register socket1
@poller.register socket2
@poller.delete(socket2).should be_true
socket1.close
socket2.close
end
it "returns true for a successfully deleted socket when the socket has been previously closed" do
socket1 = @context.socket(REP)
socket1.setsockopt(LINGER, 0)
@poller.register socket1
socket1.close
@poller.delete(socket1).should be_true
end
end
context "poll" do
include APIHelper
before(:all) { @context = Context.new }
after(:all) { @context.terminate }
before(:each) do
endpoint = "inproc://poll_test_#{SecureRandom.hex}"
@sockets = [@context.socket(DEALER), @context.socket(ROUTER)]
@sockets.each { |s| s.setsockopt(LINGER, 0) }
@sockets.first.bind(endpoint)
connect_to_inproc(@sockets.last, endpoint)
@poller = Poller.new
end
after(:each) { @sockets.each(&:close) }
it "returns 0 when there are no sockets to poll" do
@poller.poll(100).should be_zero
end
it "returns 0 when there is a single socket to poll and no events" do
@poller.register(@sockets.first, 0)
@poller.poll(100).should be_zero
end
it "returns 1 when there is a read event on a socket" do
first, last = @sockets
@poller.register_readable(last)
first.send_string('test')
@poller.poll(1000).should == 1
end
it "returns 1 when there is a read event on one socket and the second socket has been removed from polling" do
first, last = @sockets
@poller.register_readable(last)
@poller.register_writable(first)
first.send_string('test')
@poller.deregister_writable(first)
@poller.poll(1000).should == 1
end
it "works with BasiSocket" do
server = TCPServer.new("127.0.0.1", 0)
f, port, host, addr = server.addr
client = TCPSocket.new("127.0.0.1", port)
s = server.accept
@poller.register(s, ZMQ::POLLIN)
@poller.register(client, ZMQ::POLLOUT)
client.send("message", 0)
@poller.poll.should == 2
@poller.readables.should == [s]
@poller.writables.should == [client]
msg = s.read_nonblock(7)
msg.should == "message"
end
it "works with IO objects" do
r, w = IO.pipe
@poller.register(r, ZMQ::POLLIN)
@poller.register(w, ZMQ::POLLOUT)
w.write("message")
@poller.poll.should == 2
@poller.readables.should == [r]
@poller.writables.should == [w]
msg = r.read(7)
msg.should == "message"
end
it "works with SSLSocket" do
crt, key = %w[crt key].map { |ext| File.read(File.join(File.dirname(__FILE__), "support", "test." << ext)) }
ctx = OpenSSL::SSL::SSLContext.new
ctx.key = OpenSSL::PKey::RSA.new(key)
ctx.cert = OpenSSL::X509::Certificate.new(crt)
server = TCPServer.new("127.0.0.1", 0)
f, port, host, addr = server.addr
client = TCPSocket.new("127.0.0.1", port)
s = server.accept
client = OpenSSL::SSL::SSLSocket.new(client)
server = OpenSSL::SSL::SSLSocket.new(s, ctx)
t = Thread.new { client.connect }
s = server.accept
t.join
@poller.register_readable(s)
@poller.register_writable(client)
client.write("message")
@poller.poll.should == 2
@poller.readables.should == [s]
@poller.writables.should == [client]
msg = s.read(7)
msg.should == "message"
end
end
end
end
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