[pve-devel] [RFC PATCH qemu-server 1/8] tests: cfg2cmd: pin QEMU version

[Dominik Csapak]

but warn when we're out of date compared to the installed one, and die
when we're one major (+1 minor) release behind.
(the warning is not very visible when running tests or when building)

We don't want to depend on the installed QEMU version for such tests,
otherwise a developer might need to adapt tests because the installed
QEMU version is different to what is e.g. in the build environment for
our packaging.

Also, this way, we have to show intent for bumping this and it will be
obvious that we need to adapt tests because of a changed QEMU version.

Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
---
 test/run_config2command_tests.pl | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/test/run_config2command_tests.pl b/test/run_config2command_tests.pl
index 7e3d10e6..5fa6f2de 100755
--- a/test/run_config2command_tests.pl
+++ b/test/run_config2command_tests.pl
@@ -20,6 +20,10 @@ use PVE::QemuServer::Monitor;
 use PVE::QemuServer::QMPHelpers;
 use PVE::QemuServer::CPUConfig;
 
+# bump when QEMU version changes
+my $tested_version_major = 9;
+my $tested_version_minor = 2;
+
 my $base_env = {
     storage_config => {
 	ids => {
@@ -80,6 +84,7 @@ my $base_env = {
 	}
     },
     vmid => 8006,
+    tested_qemu_version => "$tested_version_major.$tested_version_minor",
     real_qemu_version => PVE::QemuServer::Helpers::kvm_user_version(), # not yet mocked
 };
 
@@ -184,7 +189,7 @@ sub parse_test($) {
 }
 
 sub get_test_qemu_version {
-    $current_test->{qemu_version} // $base_env->{real_qemu_version} // '2.12';
+    $current_test->{qemu_version} // $base_env->{tested_qemu_version} // '2.12';
 }
 
 my $qemu_server_module;
@@ -528,3 +533,19 @@ if (my $file = shift) {
 }
 
 done_testing();
+
+# reset warn
+$SIG{__WARN__} = undef;
+if ($base_env->{real_qemu_version} =~ m/^(\d+.\d+)/) {
+	if (PVE::QemuServer::Helpers::version_cmp($1, $tested_version_major, $2, $tested_version_minor) < 0) {
+	    warn "\nWARNING: installed QEMU version bigger than tested one, please bump!\n";
+	}
+
+	# if we did not bump since the last major QEMU (+1 minor) release fail the test
+	if (PVE::QemuServer::Helpers::version_cmp($1, $tested_version_major + 1, $2, 1) >= 0) {
+	    die "\nERROR: installed QEMU version one major release bigger than tested one, please bump!\n";
+	}
+
+} else {
+    die "\nERROR: invalid QEMU version\n";
+}
-- 
2.39.5