Python Blockchain.is_valid_chain Examples

Example #1

def test_is_valid_chain():
    blockchain = Blockchain()

    for i in range(3):
        blockchain.add_block(i)

    Blockchain.is_valid_chain(blockchain.chain)

Example #2

def test_is_valid_chain(blockchain_three_blocks):
    # blockchain = Blockchain()

    # for i in range(3):
    #     blockchain.add_block(i)

    Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #3

File: test_blockchain.py Project: ensarduman/BlockChainOnPython

def test_is_valid_chain(blockchain_three_blocks):

    with pytest.raises(Exception, match='chain must have block'):
        Blockchain.is_valid_chain([])

    blockchain_three_blocks.chain[1].hash = 'evil_hash'

    with pytest.raises(Exception, match='must be formatted correctly'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #4

def test_is_valid_chain_bad_genesis():
    blockchain = Blockchain()

    for i in range(3):
        blockchain.add_block(i)

    blockchain.chain[0].hash = 'bad-hash'
    
    with pytest.raises(Exception, match='The genesis block must be valid'):
        Blockchain.is_valid_chain(blockchain.chain)

Example #5

def test_is_valid_chain_invalid_genesis(blockchain_with_blocks):
    blockchain_with_blocks.chain[0].hash = 3000
    with pytest.raises(Exception, match="genesis block is invalid"):
        Blockchain.is_valid_chain(blockchain_with_blocks.chain)

Example #6

def test_is_valid_chain(blockchain_with_blocks):
    Blockchain.is_valid_chain(blockchain_with_blocks.chain)

Example #7

def test_is_valid_chain_bad_genesis(blockchain_four_blocks):
    blockchain_four_blocks.chain[0].hash = "bad_hash"

    with pytest.raises(Exception, match = "Invalid genesis block"):
        Blockchain.is_valid_chain(blockchain_four_blocks.chain)

Example #8

def test_is_valid_chain(blockchain_three_blocks):
    Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #9

File: test_blockchain.py Project: diivi/faltucoin

def test_is_valid_chain(populated_blockchain):
    Blockchain.is_valid_chain(populated_blockchain.chain)

Example #10

File: test_blockchain.py Project: Camineet/pychain

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].hash = 'evil_hash'
    with pytest.raises(Exception, match='The genesis block is not valid'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #11

File: test_blockchain.py Project: ensarduman/BlockChainOnPython

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].data = 'evil'

    with pytest.raises(Exception,
                       match='chain must start with the genesis block'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #12

File: test_blockchain.py Project: GeraldRyan/BlockchainPythonReact

def test_is_valid_chain_bad_gensis(blockchain_five_blocks):
    blockchain_five_blocks.chain[0].hash = 'evil hash haha'

    # Because we expect an exception
    with pytest.raises(Exception, match="genesis block must be valid"):
        Blockchain.is_valid_chain(blockchain_five_blocks.chain)

Example #13

File: test_blockchain.py Project: GeraldRyan/BlockchainPythonReact

def test_is_valid_chain(blockchain_five_blocks):

    # Tests code implicitly by virtue of no exception
    Blockchain.is_valid_chain(blockchain_five_blocks.chain)

Example #14

def test_is_valid_chain_bad_genesis(blockchain_init):
    blockchain_init.chain[0].hash = "evil_hash"

    with pytest.raises(Exception, match="The genesis block must be valid."):
        Blockchain.is_valid_chain(blockchain_init.chain)

Example #15

def test_is_valid_chain(blockchain_init):
    Blockchain.is_valid_chain(blockchain_init.chain)

Example #16

File: test_blockchain.py Project: gnataliespen/python-crypto

def test_is_valid_chain(blockchain):
    Blockchain.is_valid_chain(blockchain.chain)

Example #17

File: test_blockchain.py Project: gnataliespen/python-crypto

def test_is_valid_chain_bad_genesis(blockchain):
    blockchain.chain[0].hash = 'evil_hash'

    with raises(Exception, match='Invalid genesis block'):
        Blockchain.is_valid_chain(blockchain.chain)

Example #18

File: test_blockchain.py Project: dev-rodrigobaliza/blockchain-python

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].data = 'evil_data'

    with pytest.raises(Exception, match='The genesis block must be valid'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #19

File: test_blockchain.py Project: dev-rodrigobaliza/blockchain-python

def test_replace_chain_bad_chain(blockchain_three_blocks):
    Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #20

File: test_blockchain.py Project: stefanspasov/blockchain

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].hash = 'evil_hash'
    
    with pytest.raises(Exception, match='The chain must start with genesis'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #21

File: test_blockchain.py Project: kentah/blockhain-python-react-

def test_valid_transaction_chain(blockchain_three_blocks):
    Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #22

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].hash = 'evil_hash'
    #Below code allows to catch exceptions
    with pytest.raises(Exception, match='The Genesis block must be valid'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #23

File: test_blockchain.py Project: diivi/faltucoin

def test_is_valid_chain_bad_genesis(populated_blockchain):
    populated_blockchain.chain[0].hash = 'bad_hash'

    with pytest.raises(Exception, match="The Genesis block is not valid!"):
        Blockchain.is_valid_chain(populated_blockchain.chain)

Example #24

File: test_blockchain.py Project: Zac-Zajdel/ZajdelCoin

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].hash = 'bas_hash'
    with pytest.raises(Exception, match='The genesis block must be valid.'):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #25

def test_is_valid_chain_bad_genesis(blockchain_three_blocks):
    blockchain_three_blocks.chain[0].block_hash = 'evil_hash'

    with pytest.raises(Exception, match="genesis block must be valid"):
        Blockchain.is_valid_chain(blockchain_three_blocks.chain)

Example #26

def test_is_valid_chain(blockchain_four_blocks):
    Blockchain.is_valid_chain(blockchain_four_blocks.chain)