forked from DGNum/gestioCOF
132 lines
4.4 KiB
Python
132 lines
4.4 KiB
Python
from django import forms
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from django.contrib.auth import get_user_model
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from django.contrib.auth.models import Permission
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from django.contrib.contenttypes.models import ContentType
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from django.test import TestCase
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from utils.forms import KeepUnselectableModelFormMixin
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User = get_user_model()
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class KeepUnselectableModelFormMixinTests(TestCase):
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def _get_form_cls(self):
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"""
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We recreate a new form class for each test, because `queryset` may not
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be reevaluated and may lack the permissions created by `setUp`.
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"""
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class ExampleForm(KeepUnselectableModelFormMixin, forms.ModelForm):
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user_permissions = forms.ModelMultipleChoiceField(
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queryset=Permission.objects.filter(codename__startswith="selec")
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)
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keep_unselectable_fields = ["user_permissions"]
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class Meta:
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model = User
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fields = ("username", "user_permissions")
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return ExampleForm
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def setUp(self):
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ct = ContentType.objects.get_for_model(Permission)
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self.unselec_perm1 = Permission.objects.create(
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content_type=ct, codename="unselec_perm1", name="Unselectable 1"
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)
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self.unselec_perm2 = Permission.objects.create(
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content_type=ct, codename="unselec_perm2", name="Unselectable 2"
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)
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# These two perms are the only selectable permissions from
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# 'permissions' field of ExampleForm.
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self.selec_perm1 = Permission.objects.create(
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content_type=ct, codename="selec_perm1", name="Selectable 1"
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)
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self.selec_perm2 = Permission.objects.create(
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content_type=ct, codename="selec_perm2", name="Selectable 2"
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)
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def test_creation(self):
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"""
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The mixin functions properly when instance is being created.
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"""
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ExampleForm = self._get_form_cls()
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data = {"username": "user", "user_permissions": [self.selec_perm1.pk]}
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form = ExampleForm(data)
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instance = form.save()
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self.assertQuerysetEqual(
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instance.user_permissions.all(), map(repr, [self.selec_perm1])
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)
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def test_creation_commit_false(self):
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"""
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When instance is being created and 'save' method is called with
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'commit=False', 'save_m2m' method functions properly.
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https://docs.djangoproject.com/en/1.11/topics/forms/modelforms/#the-save-method
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"""
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ExampleForm = self._get_form_cls()
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data = {"username": "user", "user_permissions": [self.selec_perm1.pk]}
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form = ExampleForm(data)
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instance = form.save(commit=False)
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with self.assertRaises(User.DoesNotExist):
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User.objects.get(username="user")
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instance.save()
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form.save_m2m()
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self.assertQuerysetEqual(
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instance.user_permissions.all(), map(repr, [self.selec_perm1])
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)
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def test_existing(self):
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"""
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Unselectable items of an instance are kept.
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"""
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instance = User.objects.create(username="user")
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# Link instance with an unselectable and a selectable permissions.
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instance.user_permissions.add(self.unselec_perm1, self.selec_perm2)
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ExampleForm = self._get_form_cls()
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data = {"username": "user", "user_permissions": [self.selec_perm1.pk]}
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form = ExampleForm(data, instance=instance)
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instance = form.save()
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self.assertQuerysetEqual(
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instance.user_permissions.all(),
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map(repr, [self.selec_perm1, self.unselec_perm1]),
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)
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def test_existing_commit_false(self):
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"""
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When 'save' is called with 'commit=False', unselectable items of an
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instance are kept by 'save_m2m'.
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"""
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instance = User.objects.create(username="user")
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# Link instance with an unselectable and a selectable permissions.
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instance.user_permissions.add(self.unselec_perm1, self.selec_perm2)
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ExampleForm = self._get_form_cls()
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data = {"username": "changed", "user_permissions": [self.selec_perm1.pk]}
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form = ExampleForm(data, instance=instance)
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instance = form.save(commit=False)
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with self.assertRaises(User.DoesNotExist):
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User.objects.get(username="changed")
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instance.save()
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form.save_m2m()
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self.assertQuerysetEqual(
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instance.user_permissions.all(),
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map(repr, [self.selec_perm1, self.unselec_perm1]),
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)
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