idea: dynamic component to validate existing task behavior (reproduce and compare output and/or return status)

[matu3ba]

As of now, the behavior of tasks seems to be relative static and defined by once defined input (cwd, cmd + args, expand, name for referencing) xor template.

However, there seems to be no component yet to do 1. one shot tasks or 2. permanent ones to compare the result behavior.
This point becomes relevant, ones one does (big) refactorings and/or wants to compare logs for (simple) behavioral differences of unit tests, which include simple printf debugging.

I'll see, if I can come up with something.

[matu3ba]

I'll got stuck how to provide params necessary in a module from the action "validate":

-- $NVIMRC/lua/my_over.lua
local has_overseer, overseer = pcall(require, "overseer")
if not has_overseer then
  vim.print("no overseer")
  return
end
local constants = require("overseer.constants")
local STATUS = constants.STATUS

overseer.setup({
  actions = {
    ["validate"] = {
      desc = "Create and execute derived task to validate result",
      condition = function(task)
        return not task:has_component("validate") -- dont validate validation
          and (task.status == STATUS.SUCCESS or task.status == STATUS.FAILURE)
      end,
      run = function(task)
        -- print(task:has_component("validate")) -- DEBUG
        local newtask = overseer.new_task({
            cmd = task.cmd;
            cwd = task.cwd;
            env = task.env;
            name = "val_" .. task.name;
            components = {
                "validate",
                "on_complete_notify",
                "default"
            }
        })
        newtask:start()
      end,
    },
  },
  component_aliases = {
    default = {
    { "display_duration", detail_level = 2 },
    "on_output_summarize",
    "on_exit_set_status",
    --"on_complete_notify",
    --"on_complete_dispose", -- this should keep the task
    },
    -- Tasks from tasks.json use these components
    default_vscode = {
      "default",
      "on_result_diagnostics",
      "on_result_diagnostics_quickfix",
    },
  },
  strategy = { "jobstart", use_terminal = false },
  templates = { "builtin", "user.cpp_build", "user.run_script" },
})

-- $NVIMRC/lua/overseer/component/validate.lua
local constants = require("overseer.constants")
-- local overseer = require "overseer"
local find_index_task = function(task_list, task_name)
  local j = -1
  for i = 1, #task_list do
    if task_list[i].name == task_name then
      j = i
      break
    end
  end
  return j
end

return {
  desc = "Create and execute derived task to validate result",
  params = { -- parameters passed to component
    type = "string" -- task name as dependency
  },
  editable = false, -- editing disallowed
  serializable = true, -- serializing disabled
  constructor = function(params)
    return {
      on_init = function(self, task)
        local task_list = require("overseer").list_tasks()
        local fin_i = find_index_task(task_list, params[1])
        if fin_i == -1 then
          -- idea: add things to result of job
          task:finalize(constants.STATUS.FAILURE)
        else
          task.name = "validate" .. task.name
          task.cmd = task_list[fin_i].cmd
          task.cwd = task_list[fin_i].cwd
          task.env = task_list[fin_i].env
          self.expected_output = task_list[fin_i].result
          self.expected_exitcode = task_list[fin_i].exit_code
        end
      end,
      ---@return nil|boolean
      on_reset = function(self, task) -- reset => task runs again
        local _ = task
        local task_list = require("overseer").list_tasks()
        local fin_i = find_index_task(task_list, params[1])
        if fin_i == -1 then
          task:finalize(constants.STATUS.FAILURE)
        else
          if self.expected_output ~= task_list[fin_i].result then
            -- TODO how to provide reason for exit failure?
            task:finalize(constants.STATUS.FAILURE)
          end
          if self.expected_exitcode ~= task_list[fin_i].exit_code then
            task:finalize(constants.STATUS.FAILURE)
          end
        end
      end,
      ---@param code number The process exit code
      on_exit = function(self, task, code)
        if self.expected_exitcode == code then
          task:finalize(constants.STATUS.SUCCESS)
        else
          task:finalize(constants.STATUS.FAILURE)
        end
      end,
    }
  end,
}

E5108: Error executing lua: ...hare/nvim/lazy/overseer.nvim/lua/overseer/form/utils.lua:66: attempt to index local 'param' (a string value)
stack traceback:
        ...hare/nvim/lazy/overseer.nvim/lua/overseer/form/utils.lua:66: in function 'validate_params'
        .../nvim/lazy/overseer.nvim/lua/overseer/component/init.lua:91: in function 'validate_component'
        .../nvim/lazy/overseer.nvim/lua/overseer/component/init.lua:128: in function 'get'
        .../nvim/lazy/overseer.nvim/lua/overseer/component/init.lua:301: in function 'load'
        ...ocal/share/nvim/lazy/overseer.nvim/lua/overseer/task.lua:265: in function 'add_components'
        ...ocal/share/nvim/lazy/overseer.nvim/lua/overseer/task.lua:122: in function 'new_uninitialized'
        ...ocal/share/nvim/lazy/overseer.nvim/lua/overseer/task.lua:130: in function 'new_task'
        /home/jan/.config/nvim/lua/my_over.lua:61: in function 'run'
        ...are/nvim/lazy/overseer.nvim/lua/overseer/action_util.lua:80: in function 'on_choice'
        ...neovim-unwrapped-0.9.1/share/nvim/runtime/lua/vim/ui.lua:54: in function 'select'
        ...are/nvim/lazy/overseer.nvim/lua/overseer/action_util.lua:67: in function 'run_action'
        ...are/nvim/lazy/overseer.nvim/lua/overseer/action_util.lua:11: in function 'run_task_action'
        ...im/lazy/overseer.nvim/lua/overseer/task_list/sidebar.lua:288: in function 'run_action'
        ...m/lazy/overseer.nvim/lua/overseer/task_list/bindings.lua:15: in function 'rhs'
        ...re/nvim/lazy/overseer.nvim/lua/overseer/binding_util.lua:12: in function <...re/nvim/lazy/overseer.nvim/lua/overseer/binding_util.lua:11>