def test_minimal_cryptocurrency():
"""Test basic process of a create a cryptocurrency"""
# Generate first user
wallet = Wallet()
# Create a new currency with 10 units
blockchain = BlockChain.new_cryptocurrency(wallet.account, 10, timestamp=datetime(2018, 1, 1, 0, 0, 0),
difficulty=4, mining=True)
# Get the wallets of Alice and Bob
alice = blockchain.get_wallet(wallet.key)
bob = blockchain.get_wallet()
assert alice.get_balance() == 10
assert bob.get_balance() == 0
# Alice transfer to Bob 5 units and get 10 units because she mining the block
assert blockchain.add_transaction(alice.key, bob.account, 5)
blockchain.generate_candidate(alice.account, timestamp=datetime(2018, 1, 1, 0, 1, 0))
blockchain.mining_candidate()
assert alice.get_balance() == 15
assert bob.get_balance() == 5
# New users Carol, Dan and Eve
carol = blockchain.get_wallet()
dan = blockchain.get_wallet()
eve = blockchain.get_wallet()
# Alice transfer 3 to Carol and 4.5 to Dan
assert blockchain.add_transaction(alice.key, carol.account, 3)
assert blockchain.add_transaction(alice.key, dan.account, 4.5)
# Bon transfer 2.2 to Dan
assert blockchain.add_transaction(bob.key, dan.account, 2.2)
# Eve mine the Block
blockchain.generate_candidate(eve.account, timestamp=datetime(2018, 1, 1, 0, 2, 0))
blockchain.mining_candidate()
assert alice.get_balance() == 7.5
assert bob.get_balance() == 2.8
assert carol.get_balance() == 3
assert dan.get_balance() == 6.7
assert eve.get_balance() == 10
def test_minimal_cryptocurrency():
"""Test the operation with a minimal cryptocurrency"""
wallet_1 = Wallet('aedc3975fa118bec4a1d203cd2b996c4ceb5aa398b7f7518')
# Launch a new currency
blockchain = BlockChain.new_cryptocurrency(wallet_1.public,
100,
timestamp=datetime(
2000, 1, 1, 0, 0, 0),
difficulty=4,
mining=True)
# Open the wallets
wallet_1 = blockchain.get_wallet(
'aedc3975fa118bec4a1d203cd2b996c4ceb5aa398b7f7518')
wallet_2 = blockchain.get_wallet(
'7d6433bcc63f973580dc7562d2ca79fcb12bb4e08c7e7333')
wallet_3 = blockchain.get_wallet(
'3d66f0ea52a2c5cf42893560d5522e82621790edeb7f609b')
# Ask for the accounts
assert wallet_1.get_balance() == 100
assert wallet_2.get_balance() == 0
assert wallet_3.get_balance() == 0
# Generate an unspent transaction
assert blockchain.add_transaction(wallet_1.private, wallet_2.public,
190) is False
assert blockchain.add_transaction(wallet_1.private, wallet_2.public, 90)
assert blockchain.add_transaction(wallet_1.private, wallet_2.public,
90) is False
# Generate a candidate to mining
blockchain.generate_candidate(wallet_1.public,
timestamp=datetime(2000, 1, 1, 0, 1, 0))
blockchain.mining_candidate()
# Ask for the accounts
assert wallet_1.get_balance() == 110
assert wallet_2.get_balance() == 90
assert wallet_3.get_balance() == 0
# Move more operations
assert blockchain.add_transaction(wallet_1.private, wallet_2.public, 10)
assert blockchain.add_transaction(wallet_2.private, wallet_3.public, 20)
# Generate a candidate to mining
blockchain.generate_candidate(wallet_1.public,
timestamp=datetime(2000, 1, 1, 0, 2, 0))
blockchain.mining_candidate()
# Ask for the accounts
assert wallet_1.get_balance() == 200
assert wallet_2.get_balance() == 80
assert wallet_3.get_balance() == 20
# Move more operations
assert blockchain.add_transaction(wallet_1.private, wallet_2.public, 25)
assert blockchain.add_transaction(wallet_1.private, wallet_3.public, 25)
assert blockchain.add_transaction(wallet_2.private, wallet_3.public, 50)
# Generate a candidate to mining
blockchain.generate_candidate(wallet_2.public,
timestamp=datetime(2000, 1, 1, 0, 3, 0))
blockchain.mining_candidate()
# Ask for the accounts
assert wallet_1.get_balance() == 150
assert wallet_2.get_balance() == 155
assert wallet_3.get_balance() == 95