def test_should_pass_policy_with_other_terms():
fake_adapter = FakeExternalApiAdapter(900, Decimal(0.66))
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), Decimal(2500), 6,
Decimal(1000))
loan.person_score = 900
CommitmentPolicy(fake_adapter).apply(loan)
assert loan.terms == 9
def test_should_throw_policy_exception():
with pytest.raises(PolicyException, match='Política negada: commitment'):
fake_adapter = FakeExternalApiAdapter(900, Decimal(0.9))
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), Decimal(2500),
6, Decimal(1000))
loan.person_score = 900
CommitmentPolicy(fake_adapter).apply(loan)
def test_should_approve_loan():
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), 1000, 6, 1000)
policies_to_apply = [FakePolicy(True)]
port = LoanPort(FakeLoanAdapter())
ComputeLoanUseCase(port, policies_to_apply).execute(loan)
assert loan.status == 'completed'
assert loan.result == 'approved'
def test_shouldnt_approve_loan():
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), 1000, 6, 1000)
policies_to_apply = [FakePolicy(False)]
port = LoanPort(FakeLoanAdapter())
ComputeLoanUseCase(port, policies_to_apply).execute(loan)
assert loan.refused_policy == 'fake_policy'
assert loan.result == 'refused'
assert loan.status == 'completed'
assert loan.terms is None
assert loan.amount is None
def test_should_not_construct_loan():
with pytest.raises(ValidationException,
match='Erros: Nome inválido, CPF inválido, ' +
'Data de nascimento inválida, Valor ' +
'inválido, Quantidade de parcelas inválidas'):
name = ''
cpf = ''
birthdate = ''
amount = 999
terms = 5
income = 1000
Loan(name, cpf, birthdate, amount, terms, income)
def __find_monthly_payment(self, loan: Loan, monthly_saving):
tax = self.__get_tax_percentages(loan.person_score)
desired_terms_payment = self.__calculate_pmt(loan.amount, loan.terms,
tax[str(loan.terms)])
if desired_terms_payment > monthly_saving:
del tax[str(loan.terms)]
for key in tax:
terms = int(key)
other_term_payment = self.__calculate_pmt(
loan.amount, terms, tax[key])
if other_term_payment < monthly_saving:
loan.terms = terms
return
raise PolicyException('commitment')
def compute(event, context):
for record in event.get('Records'):
if record.get('eventName') == 'INSERT':
print(record)
id = uuid.UUID(record['dynamodb']['Keys']['id']['S'])
name = record['dynamodb']['NewImage']['name']['S']
cpf = record['dynamodb']['NewImage']['cpf']['S']
birthdate = dateutil.parser.isoparse(
record['dynamodb']['NewImage']['birthdate']['S'])
amount = Decimal(record['dynamodb']['NewImage']['amount']['N'])
terms = int(record['dynamodb']['NewImage']['terms']['N'])
income = Decimal(record['dynamodb']['NewImage']['income']['N'])
loan = Loan(name, cpf, birthdate, amount, terms, income, id=id)
compute_loan_use_case_instace.execute(loan)
def create_loan(event, context):
try:
data = json.loads(event['body'])
birthdate = datetime.datetime.strptime(
data.get('birthdate'), '%Y-%m-%d') if 'birthdate' in data else None
loan = Loan(data.get('name', ''), data.get('cpf', ''), birthdate,
data.get('amount', 0), data.get('terms', 0),
data.get('income', ''))
create_loan_use_case_instace.execute(loan)
body = {'id': loan.id}
return {'statusCode': 200, 'body': json.dumps(body)}
except ValidationException as ex:
body = {'errors': ex.errors}
return {'statusCode': 400, 'body': json.dumps(body)}
except Exception as e:
body = {'errorMessage': getattr(e, 'message', str(e))}
return {'statusCode': 500, 'body': json.dumps(body)}
def test_should_construct_loan():
name = 'teste'
cpf = '123123'
birthdate = date.today()
amount = 1000
terms = 6
income = 1000
loan = Loan(name, cpf, birthdate, amount, terms, income)
assert name == loan.name
assert cpf == loan.cpf
assert birthdate == loan.birthdate
assert amount == loan.amount
assert terms == loan.terms
assert income == loan.income
assert 'processing' == loan.status
assert None is loan.refused_policy
assert None is loan.result
UUID(hex=loan.id, version=4)
def test_should_throw_policy_exception():
with pytest.raises(PolicyException, match='Política negada: score'):
fake_adapter = FakeExternalApiAdapter(599, 0)
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), 1000, 6, 1000)
ScorePolicy(fake_adapter).apply(loan)
def get_by_id(self, id) -> Loan:
item = self.dynamo_table.get_item(Key={'id': id})['Item']
print(item)
loan = Loan(item['name'], item['cpf'], dateutil.parser.isoparse(item['birthdate']), item['amount'], item['terms'], item['income'], status=item['status'], result=item['result'], refused_policy=item['refused_policy'], id=item['id'])
print(loan)
return loan
def test_shouldnt_throw_policy_exception():
fake_adapter = FakeExternalApiAdapter(600, 0)
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), 1000, 6, 1000)
ScorePolicy(fake_adapter).apply(loan)
def save(self, item: Loan):
item.birthdate = item.birthdate.isoformat()
self.dynamo_table.put_item(Item=item.__dict__)
def test_shouldnt_throw_policy_exception():
loan = Loan('name', 'cpf', datetime.date(2000, 7, 12), 1000, 6, 1000)
AgePolicy().apply(loan)
def __deny_loan(self, loan: Loan, policy):
loan.refused_policy = policy
loan.terms = None
loan.result = 'refused'
loan.status = 'completed'
loan.amount = None
def apply(self, loan: Loan):
person_score = self.external_api_port.get_person_score(loan.cpf)
loan.person_score = person_score
if person_score < 600:
raise PolicyException('score')
def get_by_id(self, id) -> Loan:
return Loan('test', 'cpf', datetime.date.today(), 1000, 6, 1000)
def __approve_loan(self, loan: Loan):
loan.status = 'completed'
loan.result = 'approved'
def test_should_throw_policy_exception():
with pytest.raises(PolicyException, match='Política negada: age'):
loan = Loan('name', 'cpf', datetime.date.today(), 1000, 6, 1000)
AgePolicy().apply(loan)