133 lines
3.2 KiB
Perl
133 lines
3.2 KiB
Perl
#! /somewhere/perl -w
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use strict;
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use Machine;
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use Term::ReadLine;
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use IO::File;
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use Logger;
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$SIG{PIPE} = 'IGNORE'; # because Unix domain sockets may die unexpectedly
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STDERR->autoflush(1);
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my $log = new Logger;
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my %vms;
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my $context = "";
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sub createMachine {
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my ($args) = @_;
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my $vm = Machine->new({%{$args}, log => $log});
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$vms{$vm->name} = $vm;
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return $vm;
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}
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foreach my $vmScript (@ARGV) {
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my $vm = createMachine({startCommand => $vmScript});
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$context .= "my \$" . $vm->name . " = \$vms{'" . $vm->name . "'}; ";
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}
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sub startAll {
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$log->nest("starting all VMs", sub {
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$_->start foreach values %vms;
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});
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}
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# In interactive tests, this allows the non-interactive test script to
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# be executed conveniently.
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sub testScript {
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eval "$context $ENV{testScript};\n";
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warn $@ if $@;
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}
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my $nrTests = 0;
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my $nrSucceeded = 0;
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sub subtest {
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my ($name, $coderef) = @_;
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$log->nest("subtest: $name", sub {
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$nrTests++;
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eval { &$coderef };
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if ($@) {
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$log->log("error: $@", { error => 1 });
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} else {
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$nrSucceeded++;
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}
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});
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}
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sub runTests {
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if (defined $ENV{tests}) {
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$log->nest("running the VM test script", sub {
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eval "$context $ENV{tests}";
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if ($@) {
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$log->log("error: $@", { error => 1 });
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die $@;
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}
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}, { expanded => 1 });
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} else {
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my $term = Term::ReadLine->new('nixos-vm-test');
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$term->ReadHistory;
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while (defined ($_ = $term->readline("> "))) {
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eval "$context $_\n";
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warn $@ if $@;
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}
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$term->WriteHistory;
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}
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# Copy the kernel coverage data for each machine, if the kernel
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# has been compiled with coverage instrumentation.
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foreach my $vm (values %vms) {
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my $gcovDir = "/sys/kernel/debug/gcov";
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next unless $vm->isUp();
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my ($status, $out) = $vm->execute("test -e $gcovDir");
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next if $status != 0;
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# Figure out where to put the *.gcda files so that the report
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# generator can find the corresponding kernel sources.
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my $kernelDir = $vm->mustSucceed("echo \$(dirname \$(readlink -f /var/run/current-system/kernel))/.build/linux-*");
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chomp $kernelDir;
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my $coverageDir = "/hostfs" . $vm->stateDir() . "/coverage-data/$kernelDir";
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# Copy all the *.gcda files.
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$vm->execute("for d in $gcovDir/nix/store/*/.build/linux-*; do for i in \$(cd \$d && find -name '*.gcda'); do echo \$i; mkdir -p $coverageDir/\$(dirname \$i); cp -v \$d/\$i $coverageDir/\$i; done; done");
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}
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if ($nrTests != 0) {
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$log->log("$nrSucceeded out of $nrTests tests succeeded",
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($nrSucceeded < $nrTests ? { error => 1 } : { }));
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}
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}
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# Create an empty qcow2 virtual disk with the given name and size (in
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# MiB).
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sub createDisk {
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my ($name, $size) = @_;
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system("qemu-img create -f qcow2 $name ${size}M") == 0
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or die "cannot create image of size $size";
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}
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END {
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foreach my $vm (values %vms) {
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if ($vm->{pid}) {
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$log->log("killing " . $vm->{name} . " (pid " . $vm->{pid} . ")");
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kill 9, $vm->{pid};
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}
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}
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$log->close();
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}
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runTests;
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exit ($nrSucceeded < $nrTests ? 1 : 0);
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