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from datetime import datetime, date
from decimal import Decimal
try:
from simplejson import loads
except:
from json import loads # noqa
try:
from sqlalchemy import orm, schema, types
from sqlalchemy.engine import create_engine
except ImportError:
create_engine = None # noqa
from unittest import TestCase
from pecan.jsonify import jsonify, encode, ResultProxy, RowProxy
from pecan import Pecan, expose
from webtest import TestApp
from webob.multidict import MultiDict
def make_person():
class Person(object):
def __init__(self, first_name, last_name):
self.first_name = first_name
self.last_name = last_name
@property
def name(self):
return '%s %s' % (self.first_name, self.last_name)
return Person
def test_simple_rule():
Person = make_person()
# create a Person instance
p = Person('Jonathan', 'LaCour')
# register a generic JSON rule
@jsonify.when_type(Person)
def jsonify_person(obj):
return dict(
name=obj.name
)
# encode the object using our new rule
result = loads(encode(p))
assert result['name'] == 'Jonathan LaCour'
assert len(result) == 1
class TestJsonify(TestCase):
def test_simple_jsonify(self):
Person = make_person()
# register a generic JSON rule
@jsonify.when_type(Person)
def jsonify_person(obj):
return dict(
name=obj.name
)
class RootController(object):
@expose('json')
def index(self):
# create a Person instance
p = Person('Jonathan', 'LaCour')
return p
app = TestApp(Pecan(RootController()))
r = app.get('/')
assert r.status_int == 200
assert loads(r.body) == {'name': 'Jonathan LaCour'}
class TestJsonifyGenericEncoder(TestCase):
def test_json_callable(self):
class JsonCallable(object):
def __init__(self, arg):
self.arg = arg
def __json__(self):
return {"arg": self.arg}
result = encode(JsonCallable('foo'))
assert loads(result) == {'arg': 'foo'}
def test_datetime(self):
today = date.today()
now = datetime.now()
result = encode(today)
assert loads(result) == str(today)
result = encode(now)
assert loads(result) == str(now)
def test_decimal(self):
# XXX Testing for float match which is inexact
d = Decimal('1.1')
result = encode(d)
assert loads(result) == float(d)
def test_multidict(self):
md = MultiDict()
md.add('arg', 'foo')
md.add('arg', 'bar')
result = encode(md)
assert loads(result) == {'arg': ['foo', 'bar']}
def test_fallback_to_builtin_encoder(self):
class Foo(object):
pass
self.assertRaises(TypeError, encode, Foo())
class TestJsonifySQLAlchemyGenericEncoder(TestCase):
def setUp(self):
if not create_engine:
self.create_fake_proxies()
else:
self.create_sa_proxies()
def create_fake_proxies(self):
# create a fake SA object
class FakeSAObject(object):
def __init__(self):
self._sa_class_manager = object()
self._sa_instance_state = 'awesome'
self.id = 1
self.first_name = 'Jonathan'
self.last_name = 'LaCour'
# create a fake result proxy
class FakeResultProxy(ResultProxy):
def __init__(self):
self.rowcount = -1
self.rows = []
def __iter__(self):
return iter(self.rows)
def append(self, row):
self.rows.append(row)
# create a fake row proxy
class FakeRowProxy(RowProxy):
def __init__(self, arg=None):
self.row = dict(arg)
def __getitem__(self, key):
return self.row.__getitem__(key)
def keys(self):
return self.row.keys()
# get the SA objects
self.sa_object = FakeSAObject()
self.result_proxy = FakeResultProxy()
self.result_proxy.append(
FakeRowProxy([
('id', 1),
('first_name', 'Jonathan'),
('last_name', 'LaCour')
])
)
self.result_proxy.append(
FakeRowProxy([
('id', 2), ('first_name', 'Yoann'), ('last_name', 'Roman')
]))
self.row_proxy = FakeRowProxy([
('id', 1), ('first_name', 'Jonathan'), ('last_name', 'LaCour')
])
def create_sa_proxies(self):
# create the table and mapper
metadata = schema.MetaData()
user_table = schema.Table(
'user',
metadata,
schema.Column('id', types.Integer, primary_key=True),
schema.Column('first_name', types.Unicode(25)),
schema.Column('last_name', types.Unicode(25))
)
class User(object):
pass
orm.mapper(User, user_table)
# create the session
engine = create_engine('sqlite:///:memory:')
metadata.bind = engine
metadata.create_all()
session = orm.sessionmaker(bind=engine)()
# add some dummy data
user_table.insert().execute([
{'first_name': u'Jonathan', 'last_name': u'LaCour'},
{'first_name': u'Yoann', 'last_name': u'Roman'}
])
# get the SA objects
self.sa_object = session.query(User).first()
select = user_table.select()
self.result_proxy = select.execute()
self.row_proxy = select.execute().fetchone()
def test_sa_object(self):
result = encode(self.sa_object)
assert loads(result) == {
'id': 1, 'first_name': 'Jonathan', 'last_name': 'LaCour'
}
def test_result_proxy(self):
result = encode(self.result_proxy)
assert loads(result) == {'count': 2, 'rows': [
{'id': 1, 'first_name': 'Jonathan', 'last_name': 'LaCour'},
{'id': 2, 'first_name': 'Yoann', 'last_name': 'Roman'}
]}
def test_row_proxy(self):
result = encode(self.row_proxy)
assert loads(result) == {
'id': 1, 'first_name': 'Jonathan', 'last_name': 'LaCour'
}
|
