//////////////
# tilde-abbr #
//////////////

//with-temp-home
~> tilde-abbr ~/foobar
▶ '~/foobar'

//////
# cd #
//////

//with-temp-home
//in-temp-dir

## explicit argument ##
//use-os
//use-path
~> os:mkdir ~/d1
~> cd ~/d1
   eq $pwd (path:join ~ d1)
▶ $true

## changes to home with no argument ##
~> cd
~> eq $pwd ~
▶ $true

## arity check ##
~> cd dir1 dir2
Exception: arity mismatch: arguments must be 0 to 1 values, but is 2 values
  [tty]:1:1-12: cd dir1 dir2

## GetHome error ##
//mock-get-home-error can't get home
~> cd
Exception: can't get home
  [tty]:1:1-2: cd