Python ContractManager.overall_checksum示例

示例#1

文件： test_contracts_compilation.py 项目： xiaocaijigrowup/raiden-contracts

def test_verification_overall_checksum():
    """ Tamper with the overall checksum and see failures in verify_precompiled_checksums() """
    manager = ContractManager(contracts_source_path())
    manager.checksum_contracts()
    manager.verify_precompiled_checksums(contracts_precompiled_path())

    original_checksum = manager.overall_checksum

    # We change the source code overall checksum
    manager.overall_checksum += '2'
    # Now the verification should fail
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(contracts_precompiled_path())

    manager.overall_checksum = None
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(contracts_precompiled_path())

    manager.overall_checksum = ''
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(contracts_precompiled_path())

    checksum_fail = list(original_checksum)
    # Replace the first char with a different one
    checksum_fail[0] = list(filter(lambda x: x != checksum_fail[0], ['2', 'a']))[0]
    manager.overall_checksum = "".join(checksum_fail)
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(contracts_precompiled_path())

    manager.overall_checksum = original_checksum
    manager.verify_precompiled_checksums(contracts_precompiled_path())

示例#2

def test_verification_overall_checksum():
    manager = ContractManager(CONTRACTS_SOURCE_DIRS)
    manager.checksum_contracts()
    manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)

    original_checksum = manager.overall_checksum

    # We change the source code overall checksum
    manager.overall_checksum += '2'
    # Now the verification should fail
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)

    manager.overall_checksum = None
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)

    manager.overall_checksum = ''
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)

    checksum_fail = list(original_checksum)
    # Replace the first char with a different one
    checksum_fail[0] = list(filter(lambda x: x != checksum_fail[0],
                                   ['2', 'a']))[0]
    manager.overall_checksum = "".join(checksum_fail)
    with pytest.raises(ContractManagerVerificationError):
        manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)

    manager.overall_checksum = original_checksum
    manager.verify_precompiled_checksums(CONTRACTS_PRECOMPILED_PATH)