fix(lua): add wait to socket connect

lua/neotest-python/pytest.lua

@@ -4,6 +4,19 @@ local logger = require("neotest.logging")
 
 local M = {}
 
+---@async
+---Calls callback after a certain time using uv.timer
+---@param sleep_ms integer
+---@param callback function
+local function async_sleep(sleep_ms, callback)
+  local timer = assert(vim.uv.new_timer())
+  timer:start(sleep_ms, 0, function()
+    timer:stop()
+    timer:close()
+    callback()
+  end)
+end
+
 ---@async
 ---Add test instances for path in root to positions
 ---@param positions neotest.Tree
@@ -71,10 +84,12 @@ local function get_socket_path(cmd, messages, callback)
 
   -- 2. Connect to the unix socket
   local client = assert(vim.uv.new_pipe(false))
-
-  client:connect(socket_path, function(err)
+  local function _handle_tests(err)
     if err ~= nil then
       vim.print("Error", err)
+      async_sleep(500, function()
+        client:connect(socket_path, _handle_tests)
+      end)
     end
     -- 3. Send message(s)
     if type(messages) == "string" then
@@ -92,7 +107,9 @@ local function get_socket_path(cmd, messages, callback)
         end)
       end)
     end
-  end)
+  end
+
+  client:connect(socket_path, _handle_tests)
 end
 
 ---@async