from cosmic_ledger.ledger import LocalLedger

def test_basic_replication():
    key = b'same-secret-key'
    a = LocalLedger(signer_key=key, node_id='A')
    b = LocalLedger(signer_key=key, node_id='B')
    a.register_contract('Telemetry', {'fields': ['id','ts','source','type','payload']}, version=1)
    a.add_entry('Telemetry', {'id':'e1','ts':1.0,'source':'A','type':'temp','payload':'20C'}, signer_name='A')
    a.add_entry('Telemetry', {'id':'e2','ts':2.0,'source':'A','type':'temp','payload':'21C'}, signer_name='A')

    delta = a.export_delta(0)
    b.import_delta(delta)
    assert len(a) == len(b)
    assert a.root() == b.root()