Will GC run while automation testing

Given the following code, is MyObj_1 visible to the Garbage Collector?
Meaning, it will be collected the moment the GC does collection.

And, do GC collections happen while automation testing?

bool FTestProjectTest::RunTest(
	FString const & Parameters
)
{
	{
		auto * MyObj_1 = NewObject<UMyClass>();

		UPROPERTY()
		auto * MyObj_2 = NewObject<UMyClass>();

		// ...
		// use UObjects
	}

	return true;
}