bigchaindb/tests/test_commands.py
2016-12-12 15:48:48 +01:00

509 lines
20 KiB
Python

import json
from unittest.mock import Mock, patch
from argparse import Namespace
import copy
import pytest
import rethinkdb
@pytest.fixture
def mock_run_configure(monkeypatch):
from bigchaindb.commands import bigchain
monkeypatch.setattr(bigchain, 'run_configure', lambda *args, **kwargs: None)
@pytest.fixture
def mock_write_config(monkeypatch):
from bigchaindb import config_utils
monkeypatch.setattr(config_utils, 'write_config', lambda *args: None)
@pytest.fixture
def mock_db_init_with_existing_db(monkeypatch):
from bigchaindb import commands
from bigchaindb.common.exceptions import DatabaseAlreadyExists
def mockreturn():
raise DatabaseAlreadyExists
monkeypatch.setattr(commands.bigchain, '_run_init', mockreturn)
@pytest.fixture
def mock_processes_start(monkeypatch):
from bigchaindb import processes
monkeypatch.setattr(processes, 'start', lambda *args: None)
@pytest.fixture
def mock_generate_key_pair(monkeypatch):
monkeypatch.setattr('bigchaindb.common.crypto.generate_key_pair', lambda: ('privkey', 'pubkey'))
@pytest.fixture
def mock_bigchaindb_backup_config(monkeypatch):
config = {
'keypair': {},
'database': {'host': 'host', 'port': 12345, 'name': 'adbname'},
'statsd': {'host': 'host', 'port': 12345, 'rate': 0.1},
'backlog_reassign_delay': 5
}
monkeypatch.setattr('bigchaindb._config', config)
def test_make_sure_we_dont_remove_any_command():
# thanks to: http://stackoverflow.com/a/18161115/597097
from bigchaindb.commands.bigchain import create_parser
parser = create_parser()
assert parser.parse_args(['configure']).command
assert parser.parse_args(['show-config']).command
assert parser.parse_args(['export-my-pubkey']).command
assert parser.parse_args(['init']).command
assert parser.parse_args(['drop']).command
assert parser.parse_args(['start']).command
assert parser.parse_args(['set-shards', '1']).command
assert parser.parse_args(['set-replicas', '1']).command
assert parser.parse_args(['load']).command
def test_start_raises_if_command_not_implemented():
from bigchaindb.commands.bigchain import utils
from bigchaindb.commands.bigchain import create_parser
parser = create_parser()
with pytest.raises(NotImplementedError):
# Will raise because `scope`, the third parameter,
# doesn't contain the function `run_configure`
utils.start(parser, ['configure'], {})
def test_start_raises_if_no_arguments_given():
from bigchaindb.commands.bigchain import utils
from bigchaindb.commands.bigchain import create_parser
parser = create_parser()
with pytest.raises(SystemExit):
utils.start(parser, [], {})
@patch('multiprocessing.cpu_count', return_value=42)
def test_start_sets_multiprocess_var_based_on_cli_args(mock_cpu_count):
from bigchaindb.commands.bigchain import utils
from bigchaindb.commands.bigchain import create_parser
def run_load(args):
return args
parser = create_parser()
assert utils.start(parser, ['load'], {'run_load': run_load}).multiprocess == 1
assert utils.start(parser, ['load', '--multiprocess'], {'run_load': run_load}).multiprocess == 42
@patch('bigchaindb.commands.utils.start')
def test_main_entrypoint(mock_start):
from bigchaindb.commands.bigchain import main
main()
assert mock_start.called
def test_bigchain_run_start(mock_run_configure, mock_processes_start, mock_db_init_with_existing_db):
from bigchaindb.commands.bigchain import run_start
args = Namespace(start_rethinkdb=False, allow_temp_keypair=False, config=None, yes=True)
run_start(args)
@patch('bigchaindb.commands.utils.start_rethinkdb', return_value=Mock())
def test_bigchain_run_start_with_rethinkdb(mock_start_rethinkdb,
mock_run_configure,
mock_processes_start,
mock_db_init_with_existing_db):
from bigchaindb.commands.bigchain import run_start
args = Namespace(start_rethinkdb=True, allow_temp_keypair=False, config=None, yes=True)
run_start(args)
mock_start_rethinkdb.assert_called_with()
@pytest.mark.skipif(reason="BigchainDB doesn't support the automatic creation of a config file anymore")
def test_bigchain_run_start_assume_yes_create_default_config(monkeypatch, mock_processes_start,
mock_generate_key_pair, mock_db_init_with_existing_db):
import bigchaindb
from bigchaindb.commands.bigchain import run_start
from bigchaindb import config_utils
value = {}
expected_config = copy.deepcopy(bigchaindb._config)
expected_config['keypair']['public'] = 'pubkey'
expected_config['keypair']['private'] = 'privkey'
def mock_write_config(newconfig, filename=None):
value['return'] = newconfig
monkeypatch.setattr(config_utils, 'write_config', mock_write_config)
monkeypatch.setattr(config_utils, 'file_config', lambda x: config_utils.set_config(expected_config))
monkeypatch.setattr('os.path.exists', lambda path: False)
args = Namespace(config=None, yes=True)
run_start(args)
assert value['return'] == expected_config
# TODO Please beware, that if debugging, the "-s" switch for pytest will
# interfere with capsys.
# See related issue: https://github.com/pytest-dev/pytest/issues/128
@pytest.mark.usefixtures('restore_config')
def test_bigchain_show_config(capsys):
from bigchaindb import config
from bigchaindb.commands.bigchain import run_show_config
args = Namespace(config=None)
_, _ = capsys.readouterr()
run_show_config(args)
output_config = json.loads(capsys.readouterr()[0])
del config['CONFIGURED']
config['keypair']['private'] = 'x' * 45
assert output_config == config
def test_bigchain_export_my_pubkey_when_pubkey_set(capsys, monkeypatch):
from bigchaindb import config
from bigchaindb.commands.bigchain import run_export_my_pubkey
args = Namespace(config='dummy')
# so in run_export_my_pubkey(args) below,
# filename=args.config='dummy' is passed to autoconfigure().
# We just assume autoconfigure() works and sets
# config['keypair']['public'] correctly (tested elsewhere).
# We force-set config['keypair']['public'] using monkeypatch.
monkeypatch.setitem(config['keypair'], 'public', 'Charlie_Bucket')
_, _ = capsys.readouterr() # has the effect of clearing capsys
run_export_my_pubkey(args)
out, err = capsys.readouterr()
assert out == config['keypair']['public'] + '\n'
assert out == 'Charlie_Bucket\n'
def test_bigchain_export_my_pubkey_when_pubkey_not_set(monkeypatch):
from bigchaindb import config
from bigchaindb.commands.bigchain import run_export_my_pubkey
args = Namespace(config='dummy')
monkeypatch.setitem(config['keypair'], 'public', None)
# assert that run_export_my_pubkey(args) raises SystemExit:
with pytest.raises(SystemExit) as exc_info:
run_export_my_pubkey(args)
# exc_info is an object of class ExceptionInfo
# https://pytest.org/latest/builtin.html#_pytest._code.ExceptionInfo
assert exc_info.type == SystemExit
# exc_info.value is an object of class SystemExit
# https://docs.python.org/3/library/exceptions.html#SystemExit
assert exc_info.value.code == \
"This node's public key wasn't set anywhere so it can't be exported"
def test_bigchain_run_init_when_db_exists(mock_db_init_with_existing_db):
from bigchaindb.commands.bigchain import run_init
args = Namespace(config=None)
run_init(args)
@patch('bigchaindb.backend.schema.drop_database')
def test_drop_db_when_assumed_yes(mock_db_drop):
from bigchaindb.commands.bigchain import run_drop
args = Namespace(config=None, yes=True)
run_drop(args)
assert mock_db_drop.called
@patch('bigchaindb.backend.schema.drop_database')
def test_drop_db_when_interactive_yes(mock_db_drop, monkeypatch):
from bigchaindb.commands.bigchain import run_drop
args = Namespace(config=None, yes=False)
monkeypatch.setattr('bigchaindb.commands.bigchain.input', lambda x: 'y')
run_drop(args)
assert mock_db_drop.called
@patch('bigchaindb.backend.schema.drop_database')
def test_drop_db_does_not_drop_when_interactive_no(mock_db_drop, monkeypatch):
from bigchaindb.commands.bigchain import run_drop
args = Namespace(config=None, yes=False)
monkeypatch.setattr('bigchaindb.commands.bigchain.input', lambda x: 'n')
run_drop(args)
assert not mock_db_drop.called
def test_run_configure_when_config_exists_and_skipping(monkeypatch):
from bigchaindb.commands.bigchain import run_configure
monkeypatch.setattr('os.path.exists', lambda path: True)
args = Namespace(config='foo', yes=True)
return_value = run_configure(args, skip_if_exists=True)
assert return_value is None
# TODO Beware if you are putting breakpoints in there, and using the '-s'
# switch with pytest. It will just hang. Seems related to the monkeypatching of
# input.
def test_run_configure_when_config_does_not_exist(monkeypatch,
mock_write_config,
mock_generate_key_pair,
mock_bigchaindb_backup_config):
from bigchaindb.commands.bigchain import run_configure
monkeypatch.setattr('os.path.exists', lambda path: False)
monkeypatch.setattr('builtins.input', lambda: '\n')
args = Namespace(config='foo', yes=True)
return_value = run_configure(args)
assert return_value is None
def test_run_configure_when_config_does_exist(monkeypatch,
mock_write_config,
mock_generate_key_pair,
mock_bigchaindb_backup_config):
value = {}
def mock_write_config(newconfig, filename=None):
value['return'] = newconfig
from bigchaindb.commands.bigchain import run_configure
monkeypatch.setattr('os.path.exists', lambda path: True)
monkeypatch.setattr('builtins.input', lambda: '\n')
monkeypatch.setattr('bigchaindb.config_utils.write_config', mock_write_config)
args = Namespace(config='foo', yes=None)
run_configure(args)
assert value == {}
@patch('subprocess.Popen')
def test_start_rethinkdb_returns_a_process_when_successful(mock_popen):
from bigchaindb.commands import utils
mock_popen.return_value = Mock(stdout=[
'Listening for client driver 1234',
'Server ready'])
assert utils.start_rethinkdb() is mock_popen.return_value
@patch('subprocess.Popen')
def test_start_rethinkdb_exits_when_cannot_start(mock_popen):
from bigchaindb.common import exceptions
from bigchaindb.commands import utils
mock_popen.return_value = Mock(stdout=['Nopety nope'])
with pytest.raises(exceptions.StartupError):
utils.start_rethinkdb()
@patch('bigchaindb.common.crypto.generate_key_pair',
return_value=('private_key', 'public_key'))
def test_allow_temp_keypair_generates_one_on_the_fly(mock_gen_keypair,
mock_processes_start,
mock_db_init_with_existing_db):
import bigchaindb
from bigchaindb.commands.bigchain import run_start
bigchaindb.config['keypair'] = { 'private': None, 'public': None }
args = Namespace(allow_temp_keypair=True, start_rethinkdb=False, config=None, yes=True)
run_start(args)
assert bigchaindb.config['keypair']['private'] == 'private_key'
assert bigchaindb.config['keypair']['public'] == 'public_key'
@patch('bigchaindb.common.crypto.generate_key_pair',
return_value=('private_key', 'public_key'))
def test_allow_temp_keypair_doesnt_override_if_keypair_found(mock_gen_keypair,
mock_processes_start,
mock_db_init_with_existing_db):
import bigchaindb
from bigchaindb.commands.bigchain import run_start
# Preconditions for the test
original_private_key = bigchaindb.config['keypair']['private']
original_public_key = bigchaindb.config['keypair']['public']
assert isinstance(original_public_key, str)
assert isinstance(original_private_key, str)
args = Namespace(allow_temp_keypair=True, start_rethinkdb=False, config=None, yes=True)
run_start(args)
assert bigchaindb.config['keypair']['private'] == original_private_key
assert bigchaindb.config['keypair']['public'] == original_public_key
@patch('rethinkdb.ast.Table.reconfigure')
def test_set_shards(mock_reconfigure, monkeypatch, b):
from bigchaindb.commands.bigchain import run_set_shards
# this will mock the call to retrieve the database config
# we will set it to return one replica
def mockreturn_one_replica(self, conn):
return {'shards': [{'replicas': [1]}]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_one_replica)
args = Namespace(num_shards=3)
run_set_shards(args)
mock_reconfigure.assert_called_with(replicas=1, shards=3)
# this will mock the call to retrieve the database config
# we will set it to return three replica
def mockreturn_three_replicas(self, conn):
return {'shards': [{'replicas': [1, 2, 3]}]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_three_replicas)
run_set_shards(args)
mock_reconfigure.assert_called_with(replicas=3, shards=3)
@patch('logging.Logger.warn')
def test_set_shards_raises_exception(mock_log, monkeypatch, b):
from bigchaindb.commands.bigchain import run_set_shards
# test that we are correctly catching the exception
def mock_raise(*args, **kwargs):
raise rethinkdb.ReqlOpFailedError('')
def mockreturn_one_replica(self, conn):
return {'shards': [{'replicas': [1]}]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_one_replica)
monkeypatch.setattr(rethinkdb.ast.Table, 'reconfigure', mock_raise)
args = Namespace(num_shards=3)
run_set_shards(args)
assert mock_log.called
@patch('rethinkdb.ast.Table.reconfigure')
def test_set_replicas(mock_reconfigure, monkeypatch, b):
from bigchaindb.commands.bigchain import run_set_replicas
# this will mock the call to retrieve the database config
# we will set it to return two shards
def mockreturn_two_shards(self, conn):
return {'shards': [1, 2]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_two_shards)
args = Namespace(num_replicas=2)
run_set_replicas(args)
mock_reconfigure.assert_called_with(replicas=2, shards=2)
# this will mock the call to retrieve the database config
# we will set it to return three shards
def mockreturn_three_shards(self, conn):
return {'shards': [1, 2, 3]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_three_shards)
run_set_replicas(args)
mock_reconfigure.assert_called_with(replicas=2, shards=3)
@patch('logging.Logger.warn')
def test_set_replicas_raises_exception(mock_log, monkeypatch, b):
from bigchaindb.commands.bigchain import run_set_replicas
# test that we are correctly catching the exception
def mock_raise(*args, **kwargs):
raise rethinkdb.ReqlOpFailedError('')
def mockreturn_two_shards(self, conn):
return {'shards': [1, 2]}
monkeypatch.setattr(rethinkdb.RqlQuery, 'run', mockreturn_two_shards)
monkeypatch.setattr(rethinkdb.ast.Table, 'reconfigure', mock_raise)
args = Namespace(num_replicas=2)
run_set_replicas(args)
assert mock_log.called
@patch('argparse.ArgumentParser.parse_args')
@patch('bigchaindb.commands.utils.base_parser')
@patch('bigchaindb.commands.utils.start')
def test_calling_main(start_mock, base_parser_mock, parse_args_mock,
monkeypatch):
from bigchaindb.commands.bigchain import main
argparser_mock = Mock()
parser = Mock()
subparsers = Mock()
subsubparsers = Mock()
subparsers.add_parser.return_value = subsubparsers
parser.add_subparsers.return_value = subparsers
argparser_mock.return_value = parser
monkeypatch.setattr('argparse.ArgumentParser', argparser_mock)
main()
assert argparser_mock.called is True
assert parser.add_argument.called is True
parser.add_argument.assert_any_call('--dev-start-rethinkdb',
dest='start_rethinkdb',
action='store_true',
help='Run RethinkDB on start')
parser.add_subparsers.assert_called_with(title='Commands',
dest='command')
subparsers.add_parser.assert_any_call('configure',
help='Prepare the config file '
'and create the node keypair')
subparsers.add_parser.assert_any_call('show-config',
help='Show the current '
'configuration')
subparsers.add_parserassert_any_call('export-my-pubkey',
help="Export this node's public "
'key')
subparsers.add_parser.assert_any_call('init', help='Init the database')
subparsers.add_parser.assert_any_call('drop', help='Drop the database')
subparsers.add_parser.assert_any_call('start', help='Start BigchainDB')
subparsers.add_parser.assert_any_call('set-shards',
help='Configure number of shards')
subsubparsers.add_argument.assert_any_call('num_shards',
metavar='num_shards',
type=int, default=1,
help='Number of shards')
subparsers.add_parser.assert_any_call('set-replicas',
help='Configure number of replicas')
subsubparsers.add_argument.assert_any_call('num_replicas',
metavar='num_replicas',
type=int, default=1,
help='Number of replicas (i.e. '
'the replication factor)')
subparsers.add_parser.assert_any_call('load',
help='Write transactions to the '
'backlog')
subsubparsers.add_argument.assert_any_call('-m', '--multiprocess',
nargs='?', type=int,
default=False,
help='Spawn multiple processes '
'to run the command, if no '
'value is provided, the number '
'of processes is equal to the '
'number of cores of the host '
'machine')
subsubparsers.add_argument.assert_any_call('-c', '--count',
default=0,
type=int,
help='Number of transactions '
'to push. If the parameter -m '
'is set, the count is '
'distributed equally to all '
'the processes')
assert start_mock.called is True