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os-autoinst-distri-fedora/lib/fedorabase.pm
Adam Williamson 520a45b7b2 console_login: sleep a bit before starting
Summary:
This is a bit icky, but it's the easiest way to solve a problem
I've seen a few times, the latest case being
https://openqa.stg.fedoraproject.org/tests/1664 . In that test,
_console_wait_login logs in to tty1 as user, then uefi_
postinstall wants to switch to tty3 and log in as root. When
it does that, sometimes the check_screen loop in console_login
gets hit before the display has actually switched from tty1 to
tty3, so everything gets out of sync.

An alternative would be to have root_console check that it's
either logged in or at the correct tty before handing off to
console_login, but that starts duplicating stuff, and it breaks
in the case the target tty is logged in as a user and the login
prompt is no longer visible...

Test Plan:
Check all tests run as normal, and maybe run UEFI
tests a few times to see that the bug no longer happens (but
it's hard to reliably trigger it anyway).

Reviewers: garretraziel, jskladan

Reviewed By: jskladan

Subscribers: tflink

Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D683
2015-12-08 08:08:15 -08:00

94 lines
3.0 KiB
Perl

package fedorabase;
use base 'basetest';
# base class for all Fedora tests
# use this class when using other base class doesn't make sense
use testapi;
# this subroutine handles logging in as a root/specified user into console
# it requires TTY to be already displayed (handled by the root_console() method of subclasses)
sub console_login {
my $self = shift;
my %args = (
user => "root",
password => get_var("ROOT_PASSWORD", "weakpassword"),
check => 1,
@_);
# There's a timing problem when we switch from a logged-in console
# to a non-logged in console and immediately call this function;
# if the switch lags a bit, this function will match one of the
# logged-in needles for the console we switched from, and get out
# of sync (e.g. https://openqa.stg.fedoraproject.org/tests/1664 )
# To avoid this, we'll sleep a couple of seconds before starting
sleep 2;
my $good = "";
my $bad = "";
my $needuser = 1;
my $needpass = 1;
if ($args{user} eq "root") {
$good = "root_console";
$bad = "user_console";
}
else {
$good = "user_console";
$bad = "root_console";
}
for my $n (1 .. 10) {
# This little loop should handle all possibilities quite
# efficiently: already at a prompt (previously logged in, or
# anaconda case), only need to enter username (live case),
# need to enter both username and password (installed system
# case). There are some annoying cases here involving delays
# to various commands and the limitations of needles;
# text_console_login also matches when the password prompt
# is displayed (as the login prompt is still visible), and
# both still match after login is complete, unless something
# runs 'clear'. The sleeps and $needuser / $needpass attempt
# to mitigate these problems.
if (check_screen $good, 0) {
return;
}
elsif (check_screen $bad, 0) {
script_run "exit";
sleep 2;
}
if ($needuser and check_screen "text_console_login", 0) {
type_string "$args{user}\n";
$needuser = 0;
sleep 2;
}
elsif ($needpass and check_screen "console_password_required", 0) {
type_string "$args{password}\n";
$needpass = 0;
# Sometimes login takes a bit of time, so add an extra sleep
sleep 2;
}
sleep 1;
}
# If we got here we failed; if 'check' is set, die.
$args{check} && die "Failed to reach console!"
}
sub boot_to_login_screen {
my $self = shift;
my $boot_done_screen = shift; # what to expect when system is booted (e. g. GDM), can be ""
my $stillscreen = shift || 10;
my $timeout = shift || 60;
wait_still_screen $stillscreen, $timeout;
if ($boot_done_screen ne "") {
assert_screen $boot_done_screen;
}
}
1;
# vim: set sw=4 et: