fix: Adding mock server and test case to verify http timeout

tests/test_helper.rb

@@ -0,0 +1,81 @@
+require 'minitest/autorun'
+require 'minitest/pride'
+require "socket"
+require 'bundler/setup'
+Bundler.require :default
+
+Thread.report_on_exception = false
+
+class UnknownTimeoutError < StandardError; end
+
+server = TCPServer.new("127.0.0.1", 4567)
+Minitest.after_run { server.close }
+
+socket = UDPSocket.new
+socket.bind("127.0.0.1", 4568)
+Minitest.after_run { socket.close }
+
+class Minitest::Test
+  def assert_timeout(exception = UnknownTimeoutError, timeout: 1)
+    started_at = monotonic_time
+    ex = assert_raises(exception) { yield }
+    # test exact class
+    assert_equal exception, ex.class
+
+    time = monotonic_time - started_at
+    timeout = timeout..timeout + 0.5 unless timeout.is_a?(Range)
+    assert_includes timeout, time
+  end
+
+  def assert_threaded_timeout(exception = UnknownTimeoutError, timeout: 1, &block)
+    assert_timeout(exception, timeout: timeout) do
+      with_threads(&block)
+    end
+  end
+
+  def with_threads
+    threads = []
+    results = []
+    2.times do
+      threads << Thread.new { results << yield }
+    end
+    threads.each(&:join)
+    results
+  end
+
+  def connect_host
+    "10.255.255.1"
+  end
+
+  def connect_url
+    "http://#{connect_host}"
+  end
+
+  def read_host
+    "127.0.0.1"
+  end
+
+  def read_port
+    4567
+  end
+
+  def udp_port
+    4568
+  end
+
+  def read_host_and_port
+    "#{read_host}:#{read_port}"
+  end
+
+  def read_url
+    "http://#{read_host_and_port}"
+  end
+
+  def monotonic_time
+    Process.clock_gettime(Process::CLOCK_MONOTONIC)
+  end
+
+  def ruby3?
+    RUBY_VERSION.to_i >= 3
+  end
+end

tests/twilio_test.rb

@@ -0,0 +1,18 @@
+require_relative "test_helper"
+
+
+class TwilioTest < Minitest::Test
+  def test_connect
+    http_client = Twilio::HTTP::Client.new("http", connect_host, 80, timeout: 1)
+    assert_timeout(Twilio::REST::TwilioError) do
+      Twilio::REST::Client.new("sid", "token", nil, nil, http_client).api.account.calls.list
+    end
+  end
+
+  def test_read
+    http_client = Twilio::HTTP::Client.new("http", read_host, read_port, timeout: 1)
+    assert_timeout(Twilio::REST::TwilioError) do
+      Twilio::REST::Client.new("sid", "token", nil, nil, http_client).api.account.calls.list
+    end
+  end
+end