add the test file

tests/no_luasocket.lua

@@ -0,0 +1,44 @@
+-- make sure we are pointing to the local copas first
+package.path = string.format("../src/?.lua;%s", package.path)
+
+print([[
+Testing to run Copas without LuaSocket, just LuaSystem
+=============================================================================
+]])
+
+-- patch require to no longer load luasocket
+local _require = require
+_G.require = function(name)
+  if name == "socket" then
+    error("luasocket is not allowed in this test")
+  end
+  return _require(name)
+end
+
+
+local copas = require "copas"
+local timer = copas.timer
+
+local successes = 0
+
+local t1 -- luacheck: ignore
+
+copas.loop(function()
+
+  t1 = timer.new({
+    delay = 0.1,
+    recurring = true,
+    callback = function(timer_obj, params)
+      successes = successes + 1  -- 6 to come
+      if successes == 6 then
+        timer_obj:cancel()
+      end
+    end,
+  })
+  -- succes count = 6
+
+end)
+
+
+assert(successes == 6, "number of successes didn't match! got: "..successes)
+print("test success!")