I am writing C++ Unit Testing using the Google Test Suite in Visual Studio. I have a good bit finished but am having a few issues getting this done. Can someone help me figure out what I am missing in this section here?

// TODO: Create a test to verify adding a single value to an empty collection

TEST_F(CollectionTest, CanAddToEmptyVector)

{

// is the collection empty?

// if empty, the size must be 0

add_entries(1);

// is the collection still empty?

// if not empty, what must the size be?