public void Repository_Null_Is_Stored_As_Null()
{
// Demonstrates that our repository stores null and returns null
ISource <byte[], byte[]> stateDB = new NoDeleteSource <byte[], byte[]>(new MemoryDictionarySource());
StateRepositoryRoot repository = new StateRepositoryRoot(stateDB);
repository.CreateAccount(testAddress);
repository.SetStorageValue(testAddress, dog, null);
Assert.Null(repository.GetStorageValue(testAddress, dog));
repository.Commit();
// We have pushed null to the kv store. Should come back as null
StateRepositoryRoot repository2 = new StateRepositoryRoot(stateDB, repository.Root);
Assert.Null(repository2.GetStorageValue(testAddress, dog));
}
public void Repository_Bytes0VsNull()
{
// Demonstrates that our repository treats byte[0] and null as the same.
ISource <byte[], byte[]> stateDB = new NoDeleteSource <byte[], byte[]>(new MemoryDictionarySource());
StateRepositoryRoot repository = new StateRepositoryRoot(stateDB);
repository.CreateAccount(testAddress);
repository.SetStorageValue(testAddress, dog, new byte[0]);
Assert.Equal(new byte[0], repository.GetStorageValue(testAddress, dog));
repository.Commit();
// We have pushed byte[0] to the kv store. Should come back as byte[0] right?
StateRepositoryRoot repository2 = new StateRepositoryRoot(stateDB, repository.Root);
// Nope, comes back null...
Assert.Null(repository2.GetStorageValue(testAddress, dog));
}
public void Repository_Empty_String_Is_Stored_As_Null()
{
// Demonstrates that our repository stores null and returns null
ISource <byte[], byte[]> stateDB = new NoDeleteSource <byte[], byte[]>(new MemoryDictionarySource());
StateRepositoryRoot repository = new StateRepositoryRoot(stateDB);
repository.CreateAccount(testAddress);
var emptyString = Encoding.UTF8.GetBytes(string.Empty);
Assert.Empty(empty); // Empty string is empty byte array
repository.SetStorageValue(testAddress, dog, emptyString);
Assert.Equal(emptyString, repository.GetStorageValue(testAddress, dog));
repository.Commit();
// We have pushed null to the kv store. Should come back as null
StateRepositoryRoot repository2 = new StateRepositoryRoot(stateDB, repository.Root);
Assert.Null(repository2.GetStorageValue(testAddress, dog));
}
