hop.nvim/tests/lua/hop_helpers.lua

local M = {}

---@alias char string

---@param seq char[]
function M.override_keyseq(seq, closure)
  local mocked = vim.fn.getcharstr

  local idx = 0
  vim.fn.getcharstr = function()
    idx = idx + 1
    return seq[idx]
  end
  local r = closure()

  vim.fn.getcharstr = mocked
  return r
end

return M