def test_returns_model_if_string_provided(self): # pylint: disable=no-self-use
"""string-to-model returns correct model for single string"""
uid = "2d133482b3214a119f55c3060d882ceb"
CourseFactory.create()
f = SMMF(model=EdxAuthor, lookup="edx_uid")
ms = f.to_internal_value(uid)
assert len(ms) == 1
assert ms[0].edx_uid == uid
def test_returns_string_for_all_objects(self): # pylint: disable=no-self-use
"""model-to-string returns correct strings"""
e1 = EdxAuthorFactory.create()
e2 = EdxAuthorFactory.create()
co = CourseFactory.create()
co.instructors.add(e1)
co.instructors.add(e2)
f = SMMF(model=EdxAuthor, lookup="edx_uid")
assert sorted([str(e1), str(e2)]) == sorted(f.to_representation(co.instructors))
def test_returns_models_if_list_provided(self): # pylint: disable=no-self-use
"""string-to-model returns correct model for list"""
uid = "2d133482b3214a119f55c3060d882ceb"
uid2 = "3d133482b3214a119f55c3060d882ceb"
CourseFactory.create()
f = SMMF(model=EdxAuthor, lookup="edx_uid")
ms = f.to_internal_value([uid, uid2])
assert len(ms) == 2
assert ms[0].edx_uid != ms[1].edx_uid
assert ms[0].edx_uid in [uid, uid2]
assert ms[1].edx_uid in [uid, uid2]
def test_errors_on_invalid_input(self): # pylint: disable=no-self-use
"""Only deserialize known, supported types."""
CourseFactory.create()
f = SMMF(model=EdxAuthor, lookup="edx_uid")
with pytest.raises(ValidationError):
f.to_internal_value(dict())
