Am 11.02.25 um 17:08 schrieb Daniel Kral:
> Adds test cases for the alloc_disk wrapper subroutine to ensure that:
>
> - zero-sized volumes are allocated as subvols on path-based storages
> - non-zero-sized volumes are allocated as raw on path-based storages
> - volumes are allocated as raw on btrfs storages without quotas
> - volumes are allocated as subvols on btrfs storages with quotas
> - volumes are allocated as subvols on zfs storages
> - volumes cannot be allocated on storages that do not support rootdir
>
> These test cases should allow to catch regressions in following changes
> to the alloc_disk wrapper.
Always nice to have such tests up-front :)
> diff --git a/src/test/run_alloc_disk_tests.pl
> b/src/test/run_alloc_disk_tests.pl
> new file mode 100755
> index 0000000..b13f5a2
> --- /dev/null
> +++ b/src/test/run_alloc_disk_tests.pl
> @@ -0,0 +1,149 @@
> +#!/usr/bin/env perl
> +
> +use strict;
> +use warnings;
> +
> +use lib qw(..);
> +
> +use PVE::Tools;
> +
> +use Test::More;
> +use Test::MockModule;
> +
> +use PVE::LXC;
> +
> +my $test_vmid = 100;
> +my $test_root_uid = 100000;
> +my $test_root_gid = 100000;
> +
> +my $storage_config = {
> + ids => {
> + local => {
> + content => {
> + rootdir => 1,
> + },
> + path => "/var/lib/vz",
> + type => "dir",
> + shared => 0,
> + },
> + norootdirs => {
Similar to the qemu-server patch: I'd add some other content to the
hash, just so it's slightly more realistic.
> + path => '/var/lib/vz',
> + type => 'dir',> + },
> + btrfsstore => {
> + content => {
> + rootdir => 1,
> + },
> + path => '/butter/bread',
> + type => 'btrfs',
> + },
> + btrfsquotas => {
> + content => {
> + rootdir => 1,
> + },
> + path => '/butter/bread',
> + type => 'btrfs',
> + quotas => 1,
> + },
> + zfspool0 => {
> + type => 'zfspool',
> + content => {
> + rootdir => 1,
> + },
> + pool => 'rpool0',
> + mountpoint => '/zfspool0',
> + },
> + },
> +};
> +
> +my $storage_module = Test::MockModule->new("PVE::Storage");
> +$storage_module->redefine(
> + vdisk_alloc => sub {
> + my ($storecfg, $storage, $vmid, $fmt, $name, $size_kb) = @_;
> +
> + $fmt //= '';
> + my $prefix = ($fmt eq 'subvol') ? 'subvol' : 'vm';
> +
> + return "$storage:$prefix-$vmid-disk-0";
Nit: To have the tests be slightly more complete, you could have
additional global variables for size and format, similar to how you keep
track of $format_disk_called. But not too important.
> + },
> +);
> +
> +my $format_disk_called = 0;
> +
> +my $lxc_module = Test::MockModule->new("PVE::LXC");
> +$lxc_module->redefine(
> + format_disk => sub {
> + $format_disk_called = 1;
> + },
> +);
> +
> +my $tests = [
> + {
> + description => 'allocate zero-sized volume on path-based storage',
> + storage => 'local',
> + size_kb => 0,
> + result => ["local:subvol-$test_vmid-disk-0", 1],
> + },
> + {
> + description => 'allocate non-zero-sized volume on path-based storage',
> + should_format_disk => 1,
> + storage => 'local',
> + size_kb => 1024 * 1024,
> + result => ["local:vm-$test_vmid-disk-0", 0],
> + },
> + {
> + description => 'allocate volume on btrfs with quotas disabled',
> + should_format_disk => 1,
> + storage => 'btrfsstore',
> + size_kb => 1024 * 1024,
> + result => ["btrfsstore:vm-$test_vmid-disk-0", 0],
> + },
> + {
> + description => 'allocate volume on btrfs with quotas enabled',
> + storage => 'btrfsquotas',
> + size_kb => 1024 * 1024,
> + result => ["btrfsquotas:subvol-$test_vmid-disk-0", 1],
> + },
> + {
> + description => 'allocate volume on zfspool',
> + storage => 'zfspool0',
> + size_kb => 1024 * 1024,
> + result => ["zfspool0:subvol-$test_vmid-disk-0", 1],
> + },
> + {
> + description => 'allocate volume on storage without rootdir content type
> support',
> + should_fail => 1,
> + storage => 'norootdirs',
> + size_kb => 1024 * 1024,
> + },
> +];
> +
> +# multiply by 2 because of format_disk test
> +plan(tests => 2 * scalar($tests->@*));
> +
> +for my $case ($tests->@*) {
> + my $should_format_disk = exists($case->{should_format_disk}) ?
> $case->{should_format_disk} : 0;
> + $format_disk_called = 0;
> +
> + my @result = eval {
I'd prefer to be explicit: my ($volid, $needs_chown) = eval {
> + PVE::LXC::alloc_disk(
> + $storage_config,
> + $test_vmid,
> + $case->{storage},
> + $case->{size_kb},
> + $test_root_uid,
> + $test_root_gid
> + )
> + };
> +
Style nit: I'd avoid the blank line here to make it less likely for
future code to sneak in
> + if ($@) {
Style nit: if (my $err = $@) { and then use $err. Because what if
somebody changes the $should_fail assignment to a function call in the
future or adds another line in between, then you might suddenly have a
different $@ in the check below.
> + my $should_fail = exists($case->{should_fail}) ? $case->{should_fail} :
> 0;
> + is(defined($@), $should_fail, "should fail: $case->{description}") ||
> diag explain $@;
I'd just write 1 instead of defined($@), because we are already in the
failure branch. Note that defined($@) would otherwise return 'undef', so
comparing against 0 wouldn't work either. And note this requires
$should_fail to be exactly 1 and not some other true value.
So I'd prefer using something like:
if ($should_fail) {
pass(...)
} else {
diag ...
fail(...)
}
> + } else {
> + is_deeply(\@result, $case->{result}, $case->{description});
> + }
> +
> + is($format_disk_called, $should_format_disk, "should format_disk:
> $case->{description}");
> +}
> +
> +done_testing();
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