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nixos-run-vms: If there is only one VM, attach stdio to its serial console

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This is useful for interactive testing (quicker than logging in via
SSH and more convenient than logging in via a virtual console).
This commit is contained in:
Eelco Dolstra 2012-07-20 12:03:15 -04:00
parent 1375e7951d
commit 1cde1bdbe6
3 changed files with 10 additions and 6 deletions
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11
lib/test-driver/Machine.pm
View File

@ -50,6 +50,7 @@ sub new {
stateDir => "$tmpDir/vm-state-$name",
monitor => undef,
log => $args->{log},
redirectSerial => $args->{redirectSerial} // 1,
};
mkdir $self->{stateDir}, 0700;
@ -117,10 +118,12 @@ sub start {
close $serialP;
close $monitorS;
close $shellS;
open NUL, "</dev/null" or die;
dup2(fileno(NUL), fileno(STDIN));
dup2(fileno($serialC), fileno(STDOUT));
dup2(fileno($serialC), fileno(STDERR));
if ($self->{redirectSerial}) {
open NUL, "</dev/null" or die;
dup2(fileno(NUL), fileno(STDIN));
dup2(fileno($serialC), fileno(STDOUT));
dup2(fileno($serialC), fileno(STDERR));
}
$ENV{TMPDIR} = $self->{stateDir};
$ENV{USE_TMPDIR} = 1;
$ENV{QEMU_OPTS} =

2
lib/test-driver/test-driver.pl
View File

@ -50,7 +50,7 @@ my $context = "";
sub createMachine {
my ($args) = @_;
my $vm = Machine->new({%{$args}, log => $log});
my $vm = Machine->new({%{$args}, log => $log, redirectSerial => ($ENV{USE_SERIAL} // "0") ne "1"});
$vms{$vm->name} = $vm;
return $vm;
}

3
lib/testing.nix
View File

@ -158,7 +158,8 @@ rec {
wrapProgram $out/bin/nixos-run-vms \
--add-flags "$vms" \
--set tests '"startAll; joinAll;"' \
--set VLANS '"${toString vlans}"'
--set VLANS '"${toString vlans}"' \
${lib.optionalString (builtins.length vms == 1) "--set USE_SERIAL 1"}
''; # "
test = runTests driver;