def test_missing_hash(self):
"""
Test Valid rollback after receiving
"""
db = MockDatabase()
# Receive money
B1 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'balance': 0, 'amount': 10},
)
A1 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'balance': 0, 'amount': 10},
linked=B1
)
# db.add_block(B1) #TODO: B1 should really exist or be crawled for (isnt right now)
db.add_block(A1)
result, errors = A1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
# roll back the transaction
A2 = TestBlock(
block_type=BlockTypes.ROLLBACK,
transaction={'balance': 0, 'amount': 10},
previous = A1)
result, errors = A2.validate_transaction(db)
self.assertEqual(result, ValidationResult.invalid)
self.assertIsInstance(errors[0], EuroTokenRollBackBlock.MissingTransactionHash)
def test_invalid_amount(self):
"""
Test amount doesnt match rolled back transaction
"""
db = MockDatabase()
# Receive money
B1 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'balance': 0, 'amount': 10},
)
A1 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'balance': 0, 'amount': 10},
linked=B1
)
# db.add_block(B1)
db.add_block(A1)
result, errors = A1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
# roll back the transaction
A2 = TestBlock(
block_type=BlockTypes.ROLLBACK,
transaction={'balance': 5, 'amount': 5, 'transaction_hash': hexlify(A1.hash)},
previous = A1)
result, errors = A2.validate_transaction(db)
self.assertEqual(result, ValidationResult.invalid)
self.assertIsInstance(errors[0], EuroTokenRollBackBlock.InvalidRollback)
def test_missing_previous(self):
"""
Test validating a block that points towards a missing block
"""
db = MockDatabase()
G = db.owner
A1 = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
links=G)
result, errors = A1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
# db.add_block(A1) MISSING!!!
A2 = TestBlock(block_type="NonEurotoken", transaction={}, previous=A1)
db.add_block(A2)
A3 = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
previous=A2,
links=G)
result, errors = A3.validate_transaction(db)
self.assertEqual(result, ValidationResult.missing)
self.assertEqual(errors, [
BlockRange(A1.public_key, A1.sequence_number, A1.sequence_number)
])
def test_valid_creation(self):
"""
Test Valid send after receiving
"""
db = MockDatabase()
G = db.owner
G1 = TestBlock(
key=G,
block_type=BlockTypes.CREATION,
transaction={'amount': 10},
)
A1 = TestBlock(block_type=BlockTypes.CREATION,
transaction={'amount': 10},
linked=G1)
# A1.link_pk = G1.public_key
db.add_block(G1)
db.add_block(A1)
result, errors = A1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
A2 = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 10},
previous=A1,
links=G)
result, errors = A2.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
def test_double_validate_skip_non_eurotoken(self):
"""
Test validating a block that points towards a previous block with a non eurotoken block in between
"""
db = MockDatabase()
G = db.owner
A1 = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
links=G)
result, errors = A1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(A1)
A2 = TestBlock(block_type="NonEurotoken", transaction={}, previous=A1)
db.add_block(A2)
A3 = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
previous=A2,
links=G)
result, errors = A3.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
def test_valid_balance_genesis(self):
"""
Test validating a genesis block with 0 balance
"""
db = MockDatabase()
prev = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0})
result, errors = prev.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(prev)
def test_fake_creation_rollback(self):
"""
Test that a creation without its linked is rejected
"""
db = MockDatabase()
G = db.owner
A = TestWallet()
G1 = TestBlock(
key = G,
block_type=BlockTypes.CREATION,
transaction={'amount': 10},
)
A1 = TestBlock(
key=A,
block_type=BlockTypes.CREATION,
transaction={'amount': 10},
linked=G1
)
# A1.link_pk = G1.public_key
# db.add_block(G1) SEND DOENST EXIST
db.add_block(A1)
result, errors = A1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
A2 = TestBlock(
block_type=BlockTypes.ROLLBACK,
transaction={'balance': 0, 'amount': 10, 'transaction_hash': hexlify(A1.hash)},
previous=A1,
links=A
)
result, errors = A2.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(A2)
A3 = TestBlock(
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
previous=A2,
links=G
)
result, errors = A3.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
def test_double_validate(self):
"""
Test validating a block that points towards a previous block
"""
db = MockDatabase()
prev = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0})
result, errors = prev.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(prev)
block = TestBlock(block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
previous=prev)
result, errors = block.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
def test_missing_validated_balance(self):
"""
Test validating a genesis block without a balance
"""
db = MockDatabase()
G = db.owner
A = TestWallet()
G1 = TestBlock(key=G,
block_type=BlockTypes.CREATION,
transaction={'amount': 10},
links=A)
result, errors = G1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(G1)
A1 = TestBlock(key=A,
block_type=BlockTypes.CREATION,
transaction={'amount': 10},
linked=G1)
result, errors = A1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(A1)
A2 = TestBlock(block_type=BlockTypes.TRANSFER,
transaction={
'balance': 5,
'amount': 5
},
previous=A1)
result, errors = A2.validate_transaction(db)
self.assertEqual(result, ValidationResult.invalid)
self.assertIsInstance(errors[0],
EuroTokenBlock.InsufficientValidatedBalance)
def test_get_balance_receive_block_with_crawl(self):
db = MockDatabase()
A = TestWallet()
A1 = TestBlock(key=A,
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0})
result, errors = A1.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(A1)
B2 = getWalletBlockWithBalance(10, db)
B3 = TestBlock(block_type=BlockTypes.TRANSFER,
transaction={
'balance': 5,
'amount': 5
},
previous=B2,
links=A)
result, errors = B3.validate_transaction(db)
self.assertEqual(result, ValidationResult.valid)
self.assertEqual(errors, [])
db.add_block(B3)
A2 = TestBlock(block_type=BlockTypes.TRANSFER,
transaction={
'balance': 5,
'amount': 5
},
previous=A1,
linked=B3)
balance = A2.get_balance(db)
self.assertEqual(balance, 5)
def test_invalid_transaction_and_incorrect_rollback(self):
db = MockDatabase()
G = db.owner
A = TestWallet()
B = TestWallet()
# B receives money and does not verify
X2 = getWalletBlockWithBalance(10, db)
X3 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 5},
links = B,
previous=X2
)
result, errors = X3.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(X3)
B1 = TestBlock(
key = B,
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 5},
linked = X3
)
result, errors = B1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
# db.add_block(B1) we dont have B1
# B sends the money to A and A accepts (A shouldn't have)
B2 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 0},
previous=B1,
links=A
)
result, errors = B2.validate_transaction(db)
self.assertEqual(result, ValidationResult.missing) #Note send is invalid
self.assertEqual(errors, [BlockRange(B1.public_key, B1.sequence_number, B1.sequence_number)])
db.add_block(B2) #added without crawl, because provided by A
A1 = TestBlock(
key = A,
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 0},
linked = B2
)
result, errors = A1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(A1)
# A tries to verify and fails
A2 = TestBlock(
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 5},
previous=A1,
links=G
)
result, errors = A2.validate_transaction(db)
self.assertEqual(result, ValidationResult.missing)
self.assertEqual(errors, [BlockRange(B1.public_key, B1.sequence_number, B1.sequence_number)])
db.add_block(A2)
# A adds an incorrect rollback block
A3 = TestBlock(
block_type=BlockTypes.ROLLBACK,
transaction={'balance': 1, 'amount': 4, 'transaction_hash': hexlify(A1.hash)},
previous=A2,
links=A
)
result, errors = A3.validate_transaction(db)
self.assertEqual(result, ValidationResult.invalid)
self.assertIsInstance(errors[0], EuroTokenBlock.InvalidRollback)
db.add_block(A3, True) # force in, this could happen if the linked block was missing at the time of arrival
# A tries to verify and fails
A4 = TestBlock(
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 1},
previous=A3,
links=G
)
result, errors = A4.validate_transaction(db)
self.assertEqual(result, ValidationResult.invalid)
self.assertIsInstance(errors[0], EuroTokenBlock.InvalidRollback)
def test_invalid_transaction_and_rollback(self):
db = MockDatabase()
G = db.owner
A = TestWallet()
B = TestWallet()
# B receives money and does not verify
X2 = getWalletBlockWithBalance(10, db)
X3 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 5},
links = B,
previous=X2
)
result, errors = X3.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(X3)
B1 = TestBlock(
key = B,
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 5},
linked = X3
)
result, errors = B1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
# db.add_block(B1) #we dont have B1
# B sends the money to A and A accepts (A shouldn't have)
B2 = TestBlock(
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 0},
previous=B1,
links=A
)
result, errors = B2.validate_transaction(db)
self.assertEqual(result, ValidationResult.missing)
self.assertEqual(errors, [BlockRange(B1.public_key, B1.sequence_number, B1.sequence_number)])
db.add_block(B2)
A1 = TestBlock(
key = A,
block_type=BlockTypes.TRANSFER,
transaction={'amount': 5, 'balance': 0},
linked = B2
)
result, errors = A1.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(A1)
# A tries to verify and fails
A2 = TestBlock(
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 5},
previous=A1,
links=G
)
result, errors = A2.validate_transaction(db)
self.assertEqual(result, ValidationResult.missing)
self.assertEqual(errors, [BlockRange(B1.public_key, B1.sequence_number, B1.sequence_number)])
db.add_block(A2)
# A adds a rollback block
A3 = TestBlock(
block_type=BlockTypes.ROLLBACK,
transaction={'balance': 0, 'amount': 5, 'transaction_hash': hexlify(A1.hash)},
previous=A2,
links=A
)
result, errors = A3.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(A3)
# A tries to verify and succeeds
A4 = TestBlock(
block_type=BlockTypes.CHECKPOINT,
transaction={'balance': 0},
previous=A3,
links=G
)
result, errors = A4.validate_transaction(db)
self.assertEqual(errors, [])
self.assertEqual(result, ValidationResult.valid)
db.add_block(A4)