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import pytest
from wtforms.fields import Field
from wtforms.form import BaseForm
from wtforms.utils import unset_value
from wtforms.utils import WebobInputWrapper
try:
from webob.multidict import MultiDict
has_webob = True
except ImportError:
has_webob = False
class MockMultiDict:
def __init__(self, tuples):
self.tuples = tuples
def __len__(self):
return len(self.tuples)
def __iter__(self):
for k, _ in self.tuples:
yield k
def __contains__(self, key):
for k, _ in self.tuples:
if k == key:
return True
return False
def getall(self, key):
result = []
for k, v in self.tuples:
if key == k:
result.append(v)
return result
class SneakyField(Field):
def __init__(self, sneaky_callable, *args, **kwargs):
super().__init__(*args, **kwargs)
self.sneaky_callable = sneaky_callable
def process(self, formdata, data=unset_value, **kwargs):
self.sneaky_callable(formdata)
@pytest.fixture
def webob_class():
return MultiDict if has_webob else MockMultiDict
@pytest.fixture
def test_values():
return [("a", "Apple"), ("b", "Banana"), ("a", "Cherry")]
@pytest.fixture()
def empty_mdict(webob_class):
return webob_class([])
@pytest.fixture()
def filled_mdict(webob_class, test_values):
return webob_class(test_values)
def test_automatic_wrapping(filled_mdict):
def _check(formdata):
assert isinstance(formdata, WebobInputWrapper)
form = BaseForm({"a": SneakyField(_check)})
form.process(filled_mdict)
def test_empty(empty_mdict):
formdata = WebobInputWrapper(empty_mdict)
assert not formdata
assert len(formdata) == 0
assert list(formdata) == []
assert formdata.getlist("fake") == []
def test_filled(filled_mdict):
formdata = WebobInputWrapper(filled_mdict)
assert formdata
assert len(formdata) == 3
assert list(formdata) == ["a", "b", "a"]
assert "b" in formdata
assert "fake" not in formdata
assert formdata.getlist("a") == ["Apple", "Cherry"]
assert formdata.getlist("b") == ["Banana"]
assert formdata.getlist("fake") == []
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