def test_info(a, b):
r = types.RequestInfo(version=__tm_supported_versions__[0])
app = App(a, b)
res = app.info(r)
assert res.last_block_height == 0
assert res.last_block_app_hash == b''
b.store_block(Block(app_hash='1', height=1, transactions=[])._asdict())
res = app.info(r)
assert res.last_block_height == 1
assert res.last_block_app_hash == b'1'
# simulate a migration and assert the height is shifted
b.store_abci_chain(2, 'chain-XYZ')
app = App(a, b)
b.store_block(Block(app_hash='2', height=2, transactions=[])._asdict())
res = app.info(r)
assert res.last_block_height == 0
assert res.last_block_app_hash == b'2'
b.store_block(Block(app_hash='3', height=3, transactions=[])._asdict())
res = app.info(r)
assert res.last_block_height == 1
assert res.last_block_app_hash == b'3'
# it's always the latest migration that is taken into account
b.store_abci_chain(4, 'chain-XYZ-new')
app = App(a, b)
b.store_block(Block(app_hash='4', height=4, transactions=[])._asdict())
res = app.info(r)
assert res.last_block_height == 0
assert res.last_block_app_hash == b'4'
def test_exit_when_tm_ver_not_supported(a, b):
from bigchaindb import App
app = App(a, b)
p = ProtocolHandler(app)
with pytest.raises(SystemExit):
p.process('info', types.Request(info=types.RequestInfo(version='2')))
def test_info_aborts_if_chain_is_not_synced(a, b):
b.store_abci_chain(0, 'chain-XYZ', False)
with pytest.raises(SystemExit):
App(a, b).info(types.RequestInfo())
def test_app(a, b, init_chain_request):
from bigchaindb import App
from bigchaindb.tendermint_utils import calculate_hash
from bigchaindb.common.crypto import generate_key_pair
from bigchaindb.models import Transaction
app = App(a, b)
p = ProtocolHandler(app)
data = p.process(
'info',
types.Request(info=types.RequestInfo(
version=__tm_supported_versions__[0])))
res = next(read_messages(BytesIO(data), types.Response))
assert res
assert res.info.last_block_app_hash == b''
assert res.info.last_block_height == 0
assert not b.get_latest_block()
p.process('init_chain', types.Request(init_chain=init_chain_request))
block0 = b.get_latest_block()
assert block0
assert block0['height'] == 0
assert block0['app_hash'] == ''
pk = codecs.encode(init_chain_request.validators[0].pub_key.data,
'base64').decode().strip('\n')
[validator] = b.get_validators(height=1)
assert validator['public_key']['value'] == pk
assert validator['voting_power'] == 10
alice = generate_key_pair()
bob = generate_key_pair()
tx = Transaction.create([alice.public_key],
[([bob.public_key], 1)])\
.sign([alice.private_key])
etxn = json.dumps(tx.to_dict()).encode('utf8')
r = types.Request(check_tx=types.RequestCheckTx(tx=etxn))
data = p.process('check_tx', r)
res = next(read_messages(BytesIO(data), types.Response))
assert res
assert res.check_tx.code == 0
r = types.Request()
r.begin_block.hash = b''
p.process('begin_block', r)
r = types.Request(deliver_tx=types.RequestDeliverTx(tx=etxn))
data = p.process('deliver_tx', r)
res = next(read_messages(BytesIO(data), types.Response))
assert res
assert res.deliver_tx.code == 0
new_block_txn_hash = calculate_hash([tx.id])
r = types.Request(end_block=types.RequestEndBlock(height=1))
data = p.process('end_block', r)
res = next(read_messages(BytesIO(data), types.Response))
assert res
assert 'end_block' == res.WhichOneof('value')
new_block_hash = calculate_hash([block0['app_hash'], new_block_txn_hash])
data = p.process('commit', None)
res = next(read_messages(BytesIO(data), types.Response))
assert res.commit.data == new_block_hash.encode('utf-8')
assert b.get_transaction(tx.id).id == tx.id
block0 = b.get_latest_block()
assert block0
assert block0['height'] == 1
assert block0['app_hash'] == new_block_hash
# empty block should not update height
r = types.Request()
r.begin_block.hash = new_block_hash.encode('utf-8')
p.process('begin_block', r)
r = types.Request()
r.end_block.height = 2
p.process('end_block', r)
data = p.process('commit', None)
res = next(read_messages(BytesIO(data), types.Response))
assert res.commit.data == new_block_hash.encode('utf-8')
block0 = b.get_latest_block()
assert block0
assert block0['height'] == 2
# when empty block is generated hash of previous block should be returned
assert block0['app_hash'] == new_block_hash