Merge pull request #3689 from canonical/increase-robustness-of-driver…

…-factory-tests

Increase robustness of driver factory tests

tests/linux/test_platform_linux.cpp

@@ -24,6 +24,7 @@
 #include "tests/mock_settings.h"
 #include "tests/mock_standard_paths.h"
 #include "tests/mock_utils.h"
+#include "tests/qemu/linux/mock_dnsmasq_server.h"
 #include "tests/temp_dir.h"
 #include "tests/test_with_mocked_bin_path.h"
 
@@ -70,6 +71,9 @@ struct PlatformLinux : public mpt::TestWithMockedBinPath
     template <typename VMFactoryType>
     void aux_test_driver_factory(const QString& driver)
     {
+        const mpt::MockDNSMasqServerFactory::GuardedMock dnsmasq_server_factory_attr{
+            mpt::MockDNSMasqServerFactory::inject<NiceMock>()};
+
         auto factory = mpt::MockProcessFactory::Inject();
         setup_driver_settings(driver);