Add tests for Loader Driver interaction conformance for Sysman VF Management API's (#360)

* Add tests for Loader Driver interaction conformance for Sysman VF Management API's

Related-To: NEO-15334

Signed-off-by: Vishnu Khanth <vishnu.khanth.b@intel.com>

Author: vishnu-khanth

scripts/templates/nullddi.cpp.mako

@@ -92,6 +92,11 @@ namespace driver
 
             %endfor
         }
+        %if not fname.endswith("DriverGet") and not re.match("Init", obj['name']):
+        
+        char *env_str = context.setenv_var_with_driver_id("${fname}", ZEL_NULL_DRIVER_ID);
+        context.env_vars.push_back(env_str);
+        %endif
 
         return result;
     }

source/drivers/null/ze_null.cpp

@@ -629,6 +629,27 @@ namespace driver
         pSysman.isValidFlag = 1;
         pSysman.version = ZE_API_VERSION_CURRENT;
     }
+
+    char *context_t::setenv_var_with_driver_id(const std::string &key, uint32_t driverId)
+    {
+        std::string env = key + "=" + std::to_string(driverId);
+        char *env_str = strdup_safe(env.c_str());
+        putenv_safe(env_str);
+        return env_str;
+    }
+
+    context_t::~context_t()
+    {
+        for (auto handle : globalBaseNullHandle)
+        {
+            delete handle;
+        }
+
+        for (const auto &env_var : env_vars)
+        {
+            free(env_var);
+        }
+    }
 } // namespace driver
 
 namespace instrumented

source/drivers/null/ze_null.h

@@ -42,24 +42,23 @@ namespace driver
         zet_dditable_t  zetDdiTable = {};
         zes_dditable_t  zesDdiTable = {};
         std::vector<BaseNullHandle*> globalBaseNullHandle;
-        bool ddiExtensionRequested = false;
+	bool ddiExtensionRequested = false;
+	std::vector<char *> env_vars{};
         context_t();
-        ~context_t() {
-            for (auto handle : globalBaseNullHandle) {
-                delete handle;
-            }
-        }
+        ~context_t();
 
         void* get( void )
         {
-            static uint64_t count = 0x80800000;
+            static uint64_t count = 0x80800000 >> ZEL_NULL_DRIVER_ID;
             if (ddiExtensionRequested) {
                 globalBaseNullHandle.push_back(new BaseNullHandle());
                 return reinterpret_cast<void*>(globalBaseNullHandle.back());
             } else {
                 return reinterpret_cast<void*>( ++count );
             }
         }
+
+	char *setenv_var_with_driver_id(const std::string &key, uint32_t driverId);
     };
 
     extern context_t context;