def test_get_last_block(self):
blockchain = Blockchain()
g_block = blockchain.get_last_block()
test_block = None
while not test_block:
test_block = blockchain.mine_block(data="Test", node_addr="8367")
self.assertEqual(test_block, blockchain.get_last_block())
self.assertNotEqual(g_block, blockchain.get_last_block())
def test_get_block(self):
blockchain = Blockchain()
g_block = blockchain.get_last_block()
self.assertEqual(g_block,
blockchain.get_block(g_block.get_block_hash()))
def test_get_blockchain_id(self):
blockchain = Blockchain()
g_data = blockchain.get_last_block()
self.assertEqual(g_data.get_block_hash(),
blockchain.get_blockchain_id())
def test_find_consensus(self):
tester_node = Node("Tester")
blockchain1 = Blockchain(diff_threshold=10, g_data="Fiat Lux!")
blockchain2 = Blockchain(diff_threshold=7, g_data="Fiat Lux!")
for i in range(100):
tester_node.write_data(data=str(i), chain=blockchain1)
for i in range(80):
tester_node.write_data(data=str(i), chain=blockchain2)
# Blockchain 2 has a higher difficulty threshold, thus it will have a
# higher cumulative proof-of-work despite mining fewer blocks:
self.assertFalse(blockchain2.find_consensus(blockchain1))
self.assertTrue(blockchain1.find_consensus(blockchain2))
self.assertEqual(blockchain1.get_last_block(),
blockchain2.get_last_block())
def test_write_data(self):
tester_node = Node("Tester")
blockchain = Blockchain(g_data="Test",
node_addr=tester_node.get_node_addr())
tester_node.write_data(data="Written successfully", chain=blockchain)
last_block = blockchain.get_last_block()
self.assertEqual("Written successfully", last_block.get_data())
def test_mine_block(self):
blockchain = Blockchain()
test_block = None
while not test_block:
test_block = blockchain.mine_block(data="Test", node_addr="8367")
self.assertIsNotNone(test_block)
self.assertTrue(blockchain.verify_block(test_block))
self.assertEqual(blockchain.get_last_block(), test_block)
def test_get_ledger(self):
blockchain = Blockchain()
g_block_hash = blockchain.get_last_block().get_block_hash()
test_block = None
while not test_block:
test_block = blockchain.mine_block(data="Test", node_addr="8367")
ledger = blockchain.get_ledger()
self.assertIsNotNone(ledger[g_block_hash])