def test_conflict_v8(self):
"""Check whether ``back`` conflicts with an existing lend.
In this scenario:
* old_lend.out != Null
* old_lend.back != Null
* new_lend.out < old_lend.out
Then, ``new_lend['back']`` is set to before, during and after
``old_lend``.
"""
old_lend = factories.PastLendFactory.create()
old_lend.back = old_lend.out
old_lend.save()
new_lend = self._copy_user_and_item(old_lend)
new_lend['out'] = old_lend.out - timedelta(days = 1)
# before old_lend
new_lend['back'] = old_lend.out - timedelta(days = 1)
self.assertTrue(forms.LendForm(new_lend).is_valid())
# during old_lend
new_lend['back'] = old_lend.out
self.assertFalse(forms.LendForm(new_lend).is_valid())
# after old_lend
new_lend['back'] = old_lend.back + timedelta(days = 1)
self.assertFalse(forms.LendForm(new_lend).is_valid())
def get_handler():
"""Return a form for creating an lend."""
form_data = request.session.pop('form_data', None)
if form_data is None:
form = forms.LendForm()
else:
form = forms.LendForm(json.loads(form_data))
return render(request, 'elts/lend-create-form.html', {'form': form})
def test_out_before_back(self):
"""``out`` must occur before ``back``."""
data = {
'user_id': factories.UserFactory.create().id,
'item_id': factories.ItemFactory.create().id,
'out': factories.lend_out(),
}
data['back'] = data['out'] - timedelta(days = 1)
self.assertFalse(forms.LendForm(data).is_valid())
data['back'] = data['out'] + timedelta(days = 1)
self.assertTrue(forms.LendForm(data).is_valid())
def test_if_due_back_then_due_out(self):
"""If ``due_back`` is set, ``due_out`` must also be set."""
data = {
'user_id': factories.UserFactory.create().id,
'item_id': factories.ItemFactory.create().id,
'out': factories.lend_out(), # due_out or out is required
'due_back': factories.lend_due_back(),
}
self.assertFalse(forms.LendForm(data).is_valid())
data['due_out'] = data['due_back'] - timedelta(days = 1)
self.assertTrue(forms.LendForm(data).is_valid())
def get_handler():
"""Return a form for updating lend ``lend_id_``."""
form_data = request.session.pop('form_data', None)
if form_data is None:
form = forms.LendForm(instance = lend_)
else:
form = forms.LendForm(json.loads(form_data))
return render(
request,
'elts/lend-id-update-form.html',
{'lend': lend_, 'form': form}
)
def test_missing_out_and_due_out(self):
"""Create a LendForm without setting ``out`` or ``due_out``."""
form = forms.LendForm({
'user_id': factories.UserFactory.create().id,
'item_id': factories.ItemFactory.create().id,
})
self.assertFalse(form.is_valid())
def test_missing_item_id(self):
"""Create a LendForm without setting ``item_id``."""
form = forms.LendForm({
'user_id': factories.UserFactory.create().id,
'due_out': factories.lend_due_out(),
'out': factories.lend_out()
})
self.assertFalse(form.is_valid())
def test_valid_v2(self):
"""Create a valid LendForm with ``out`` set."""
form = forms.LendForm({
'user_id': factories.UserFactory.create().id,
'item_id': factories.ItemFactory.create().id,
'out': factories.lend_out()
})
self.assertTrue(form.is_valid())
def test_conflict_v5(self):
"""Check whether ``out`` conflicts with an existing lend.
In this scenario:
* old_lend.out != Null
* old_lend.back == Null
Then, ``new_lend['out']`` is set to before and during ``old_lend``.
"""
old_lend = factories.PastLendFactory.create()
new_lend = self._copy_user_and_item(old_lend)
# before old_lend
new_lend['out'] = old_lend.out - timedelta(days = 1)
self.assertFalse(forms.LendForm(new_lend).is_valid())
# during old_lend
new_lend['out'] = old_lend.out
self.assertFalse(forms.LendForm(new_lend).is_valid())
new_lend['out'] = old_lend.out + timedelta(days = 1)
self.assertFalse(forms.LendForm(new_lend).is_valid())
def put_handler():
"""Update lend ``lend_id_``.
If update succeeds, redirect user to ``lend_id`` view. Otherwise,
redirect user to ``lend_id_update_form``.
"""
form = forms.LendForm(request.POST, instance = lend_)
if form.is_valid():
form.save()
return http.HttpResponseRedirect(
reverse('elts.views.lend_id', args = [lend_id_])
)
else:
request.session['form_data'] = json.dumps(form.data)
return http.HttpResponseRedirect(
reverse('elts.views.lend_id_update_form', args = [lend_id_])
)
def post_handler():
"""Create a new item lend.
If creation suceeds, redirect user to ``lend_id`` view. Otherwise,
redirect user to ``lend_create_form``.
"""
form = forms.LendForm(request.POST)
if form.is_valid():
new_lend = form.save()
return http.HttpResponseRedirect(
reverse('elts.views.lend_id', args = [new_lend.id])
)
else:
request.session['form_data'] = json.dumps(form.data)
return http.HttpResponseRedirect(
reverse('elts.views.lend_create_form')
)