Before (check :Startify):
  Startify

Execute (check options):
  AssertEqual 'startify', &filetype
  AssertEqual 'wipe',     &bufhidden
  AssertEqual 'nofile',   &buftype
  AssertEqual 0,          &buflisted
  AssertEqual 0,          &cursorcolumn
  AssertEqual 0,          &cursorline
  AssertEqual 0,          &list
  AssertEqual 0,          &number
  AssertEqual 0,          &swapfile

Do (open new buffer in insert mode via 'i'):
  ifoo
Expect (only "foo"):
  foo

Do (open new buffer in normal mode via 'e'):
  eibar
Expect (only "bar"):
  bar

Given:
  quux
Do (quit startify buffer via 'q'):
  q
Expect:
  quux