# @param string $part  Reference to variable to hold partial unique username
# @param string $full  Reference to variable to hold full unique username
proc setup {part full} {
    upvar $part _part
    upvar $full _full

    assert_bash_exec {compgen -u} {} /@ users
    find_unique_completion_pair $users _part _full
    save_env
}


proc teardown {} {
    assert_env_unmodified {
        /COMPREPLY=/d
    }
}


setup part full


set test "function should run without errors"
assert_bash_exec {_tilde > /dev/null} $test


sync_after_int


set test "function should not pollute environment"
# NOTE: A possible environment pollution is detected by assert_env_modified() in teardown()
assert_bash_exec {foo() { local aa="~"; _tilde "$aa"; }; foo; unset foo} $test


sync_after_int


set test "~full should complete to ~full unmodified"
set cmd [format {_tilde "~%s"; printf "%%s\n" "${COMPREPLY[@]}"} $full]
assert_bash_list "~$full" $cmd $test


sync_after_int


set test "~part should complete to ~full"
set cmd [format {_tilde "~%s"; printf "%%s\n" "${COMPREPLY[@]}"} $part]
assert_bash_list "~$full" $cmd $test
sync_after_int


# Debian #766163
assert_no_complete "_tilde ~-o"
sync_after_int


teardown