fileevent $f readable {}
    set x [list [testfevent cmd "fileevent $f readable"] \
                [fileevent $f readable]]
    testfevent delete
    close $f
    set x
} {{script 1} {}}
unset path(foo)
removeFile foo

set path(bar) [makeFile {} bar]

test io-48.1 {testing readability conditions} {fileevent} {
    set f [open $path(bar) w]
    puts $f abcdefg
    puts $f abcdefg

    puts $f "set f \[[list open $path(bar) r]]"
    puts $f {copy_slowly $f}
    puts $f {exit}
    vwait [namespace which -variable x]
    close $f
    list $x $l
} {done {0 1 0 1 0 1 0 1 0 1 0 1 0 0}}
unset path(bar)
removeFile bar

test io-48.4 {lf write, testing readability, ^Z termination, auto read mode} {fileevent} {
    file delete $path(test1)
    set f [open $path(test1) w]
    fconfigure $f -translation lf
    variable c [format "abc\ndef\n%c" 26]
    puts -nonewline $f $c
    close $f