create if needed instance in fixture

Author: lia-viam

src/viam/sdk/tests/test_utils.hpp

@@ -13,8 +13,15 @@
 namespace viam {
 namespace sdktests {
 
+struct GlobalFixture {
+    GlobalFixture() {
+        (void)sdk::Instance::current(sdk::Instance::Creation::if_needed);
+    }
+};
+
+BOOST_TEST_GLOBAL_FIXTURE(GlobalFixture);
+
 using namespace viam::sdk;
-BOOST_TEST_GLOBAL_FIXTURE(Instance);
 
 ProtoStruct fake_map();
 std::vector<GeometryConfig> fake_geometries();