def test_slowly_mined_block():
last_block = Block.mine_block(Block.genesis(), 'foo')
print(f'last_block: {last_block}')
time.sleep(MINE_RATE_SEC)
mined_block = Block.mine_block(last_block, 'bar')
print(f'mined_block: {mined_block}')
assert mined_block.difficulty == last_block.difficulty - 1
def test_slowly_mined_block():
last_block = Block.mine_block(Block.genesis(), 'foo')
# Suspend execution of the calling thread for the given number of seconds.
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, 'bar')
assert mined_block.difficulty == last_block.difficulty - 1
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def test_is_valid_bad_block():
last_block = Block.genesis()
block = Block.mine_block(last_block, 'foo')
block.last_hash = 'evil_lash_harsh'
with pytest.raises(Exception, match='he block last_hash must be correct'):
Block.is_valid_block(last_block, block)
def test_slowly_mined_block():
last_block = Block.mine_block(Block.genesis(), 'foo')
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, 'bar')
assert mined_block.difficulty == last_block.difficulty - 1
def test_is_valid_block_bad_last_hash():
last_block = Block.genesis()
block = Block.mine_block(last_block, 'test')
block.last_hash = 'bad_last_hash'
with pytest.raises(Exception, match='last_hash must be correct'):
Block.is_valid_block(last_block, block)
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
# every attirubte matches attribute in genesis block dictionary
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def test_genesis():
genesis = Block.genesis()
# function returns True if the specified object is of the specified type
assert isinstance(genesis, Block)
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def test_slowly_mined_block():
last_block = Block.mine_block(Block.genesis(), 'foo')
time.sleep(MINE_RATE / SECONDS)
# /SECONDS as arg is in seconds and the mine rate is calculated in Nanoseconds
# (otherwise the time would sleep for 4 billions seconds)
mined_block = Block.mine_block(last_block, 'bar')
assert mined_block.difficulty == last_block.difficulty - 1
def test_mine_block():
last_block = Block.genesis()
data = 'test-data'
block = Block.mine_block(last_block, data)
assert isinstance(block, Block)
assert block.data == data
assert block.last_hash == last_block.hash
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
# Loop through the const genesis, and compare genesis data with the const data
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def is_valid_chain(chain):
if chain[0] != Block.genesis():
raise Exception('The genesis block must be valid')
for i in range(1, len(chain)):
block = chain[i]
last_block = chain[i - 1]
Block.is_valid_block(last_block, block)
Blockchain.is_valid_transaction_chain(chain)
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
assert genesis.timestamp == GENESIS_DATA['timestamp']
assert genesis.last_hash == GENESIS_DATA['last_hash']
assert genesis.hash == GENESIS_DATA['hash']
assert genesis.data == GENESIS_DATA['data']
def test_slowly_mined_block():
genesis_block = Block.genesis()
last_block = Block.mine_block(genesis_block, 'foo')
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, 'bar')
assert (mined_block.difficulty == 1) | (mined_block.difficulty
== (last_block.difficulty - 1))
def test_mine_block():
last_block = Block.genesis()
data = 'test-data'
block = Block.mine_block(last_block, data)
# Insure block object is an instance of the block itself
assert isinstance(block, Block)
assert block.data == data
assert block.last_hash == last_block.hash
def test_quickly_mined_block():
"""Asumimos que el bloque será minado rápidamente, así que la
dificultad debería aumentar en un nivel
"""
last_block = Block.mine_block(Block.genesis(), "foo")
mined_block = Block.mine_block(last_block, "bar")
assert mined_block.difficulty == last_block.difficulty + 1
def test_mine_block():
last_block = Block.genesis()
data = 'test-data'
block = Block.mine_block(last_block, data)
assert isinstance(block, Block)
assert block.data == data
assert block.last_hash == last_block.hash
assert hex_to_binary(block.hash)[0:block.difficulty] == '0' * block.difficulty
def test_slowly_mined_block():
last_block = Block.mine_block(Block.genesis(), 'test')
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, 'test2')
# Should be one lower due to its delay
assert mined_block.difficulty == last_block.difficulty - 1
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
assert genesis.timestamp == GENESIS_DATA['timestamp']
assert genesis.last_hash == GENESIS_DATA['last_hash']
assert genesis.hash == GENESIS_DATA['hash']
assert genesis.data == GENESIS_DATA['data']
for key, value in GENESIS_DATA.items():
getattr(genesis, key) == value
def test_mine():
previous_block = Block.genesis()
data = "test data"
block = Block.mine(previous_block, data)
assert isinstance(block, Block)
assert block.data == data
assert hex_to_binary(
block.hash)[0:block.difficulty] == "0" * block.difficulty
def test_mine_block_leading_zeros():
# Set up a block
last_block = Block.genesis()
data = "test-data"
block = Block.mine_block(last_block, data)
# Check that the block hash has the correct number of leading zeros
assert hex_to_binary(
block.hash)[0:block.difficulty] == "0" * block.difficulty
def test_mine_block():
gen = Block.genesis()
data = 'test'
block = Block.mine_block(gen,data)
assert isinstance(block, Block)
assert block.last_hash == gen.hash
assert block.data == data
assert hex_to_bin(block.hash)[0:block.difficulty] == '0'* block.difficulty
def test_quickly_mined_block():
'''
Purpose:
Test that the difficulty to mine a block increases when a block is
mined to quickly.
'''
last_block = Block.mine_block(Block.genesis(), 'foo')
mined_block = Block.mine_block(last_block, 'bar')
# Assert that difficulty INCREASES by 1 when a block is mined too quickly.
assert (mined_block.difficulty == last_block.difficulty + 1)
def test_mine_block():
# Set up a block
last_block = Block.genesis()
data = "test-data"
block = Block.mine_block(last_block, data)
# Confirm block is instance of Block, has correct data, and last_lash
assert isinstance(block, Block)
assert block.data == data
assert block.last_hash == last_block.hash
def test_slowly_mined_block():
# Mimic mined blocks that trigger a difficulty lower due to slow mining
last_block = Block.mine_block(Block.genesis(), "foo")
# Create a delay in between mining blocks
time.sleep(DELAY)
mined_block = Block.mine_block(last_block, "bar")
assert mined_block.difficulty == last_block.difficulty - 1
def test_mine_block():
last_block = Block.genesis()
data = 'test'
block = Block.mine_block(last_block, data)
assert isinstance(
block, Block) # it will check wheather block is object of Block class
assert block.data == data
assert block.last_hash == last_block.hash
assert block.hash[0:block.difficulty] == '0' * block.difficulty
def test_mine_block():
last_block = Block.genesis()
data = 'test data'
block = Block.mine_block(last_block, data)
# First argument is the object that you want to test, second is the class that you want to match object.
assert isinstance(block, Block)
assert block.data == data
assert block.last_hash == last_block.hash
assert hex_to_binary(
block.hash)[0:block.difficulty] == '0' * block.difficulty
def test_slowly_mined_block():
'''
Purpose:
Test that the difficulty to mine a block decreases when a block is
mined too slowly.
'''
last_block = Block.mine_block(Block.genesis(), 'foo')
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, 'bar')
# Assert that difficulty DECREASES by 1 when a block is mined too slowly.
assert (mined_block.difficulty == last_block.difficulty - 1)
def test_slowly_mined_block():
"""Creamos un delay para que el bloque sea minado lentamente, así que la
dificultad debería disminuir en un nivel, MINE_RATE está en nanosegundos,
por ello hay que dividirlo por la variable SEGUNDOS que son los
los nanosegundos en un segundo
"""
last_block = Block.mine_block(Block.genesis(), "foo")
time.sleep(MINE_RATE / SECONDS)
mined_block = Block.mine_block(last_block, "bar")
assert mined_block.difficulty == last_block.difficulty - 1
def test_genesis():
genesis = Block.genesis()
assert isinstance(genesis, Block)
# assert genesis.timestamp == GENESIS_DATA['timestamp']
# assert genesis.last_hash == GENESIS_DATA['last_hash']
# assert genesis.hash == GENESIS_DATA['hash']
# assert genesis.data == GENESIS_DATA['data']
for attr_name, attr_value in GENESIS_DATA.items():
assert getattr(genesis, attr_name) == attr_value