\input regression-test.tex
\documentclass{article}
\usepackage[reference-date=2026-07-18]{kanban-board}
\newcount\kbcompletedboxes
\begin{document}
\sbox0{\scriptsize $x$}% Load math font sizes outside captured output.
\START
\makeatletter
\def\kbtask@prio{}\def\kbtask@author{}\def\kbtask@deadline{}%
\def\kbtask@late{}\def\kbtask@completed{}%
\kanban@processtaskoptions{due=2026-08-01}
\ifdefstring{\kbtask@deadline}{2026-08-01}
  {\TYPE{KANBAN DUE KEY STORES DEADLINE OK}}
  {\TYPE{KANBAN DUE KEY STORES DEADLINE FAILED}}
\def\kbtask@deadline{}%
\kanban@processtaskoptions{deadline=2026-08-01}
\ifdefstring{\kbtask@deadline}{2026-08-01}
  {\TYPE{KANBAN DEADLINE KEY STORES DEADLINE OK}}
  {\TYPE{KANBAN DEADLINE KEY STORES DEADLINE FAILED}}

\begingroup
  \def\tcbox[#1]#2{%
    \in@{colback=kanbanHigh}{#1}%
    \ifin@
      \TYPE{KANBAN LATE OVERRIDE USES OVERDUE STYLE OK}%
    \else
      \TYPE{KANBAN LATE OVERRIDE USES OVERDUE STYLE FAILED}%
    \fi}
  \kanban@deadlinechip{1}{2099-12-31}
\endgroup
\begingroup
  \def\tcbox[#1]#2{%
    \in@{colback=kanbanHigh}{#1}%
    \ifin@
      \TYPE{KANBAN FUTURE DEADLINE NEUTRAL STYLE FAILED}%
    \else
      \TYPE{KANBAN FUTURE DEADLINE NEUTRAL STYLE OK}%
    \fi}
  \kanban@deadlinechip{}{2099-12-31}
\endgroup

\begingroup
  \def\tcbox[#1]#2{\global\advance\kbcompletedboxes by 1\relax}
  \kanban@completedchip{1}
  \kanban@completedchip{}
\endgroup
\ifnum\kbcompletedboxes=1\relax
  \TYPE{KANBAN COMPLETION CHIP FLAG OK}
\else
  \TYPE{KANBAN COMPLETION CHIP FLAG FAILED}
\fi
\makeatother

\begin{kanban}[columns={Only},columnsep=\linewidth]
  \kanbantask[prio=high,author=Alice,due=2026-07-18]
    {Only}{Exercise a one-column board with a registered length}
\end{kanban}
\TYPE{KANBAN ONE COLUMN PUBLIC RENDER OK}
\END
\end{document}