def test_can_set_value_false(self):
accessor = AttributeDataAccessor()
obj = AttributeDummy('test_value')
can_set = accessor.can_set_value(obj)
self.assertFalse(can_set)
def setUp(self):
super().setUp()
self.data = [
DataItem(a=i, b=10*i, c=str(i)) for i in range(10)
]
self.model = RowTableDataModel(
data=self.data,
row_header_data=AttributeDataAccessor(
attr='a',
value_type=IntValue(),
),
column_data=[
AttributeDataAccessor(
attr='b',
value_type=IntValue(),
),
AttributeDataAccessor(
attr='c',
value_type=TextValue(),
)
]
)
self.values_changed_event = None
self.structure_changed_event = None
self.model.observe(self.model_values_changed, 'values_changed')
self.model.observe(self.model_structure_changed, 'structure_changed')
def test_column_data_updated(self):
with self.assertTraitChanges(self.model, "structure_changed"):
self.model.column_data = [
AttributeDataAccessor(
attr='c',
value_type=TextValue(),
),
AttributeDataAccessor(
attr='b',
value_type=IntValue(),
),
]
self.assertTrue(self.structure_changed_event.new)
def test_defaults(self):
accessor = AttributeDataAccessor()
self.assertEqual(accessor.attr, '')
self.assertIsNone(accessor.value_type)
self.assertIsInstance(accessor.title_type, TextValue)
self.assertEqual(accessor.title, '')
def test_row_header_data_updated(self):
with self.assertTraitChanges(self.model, "values_changed"):
self.model.row_header_data = AttributeDataAccessor(attr='b')
self.assertEqual(
self.values_changed_event.new,
((), (), (), ())
)
def test_no_data_column_data_update(self):
model = RowTableDataModel(row_header_data=AttributeDataAccessor(
attr='a',
value_type=IntValue(),
),
column_data=[
AttributeDataAccessor(
attr='b',
value_type=IntValue(),
),
AttributeDataAccessor(
attr='c',
value_type=TextValue(),
)
])
with self.assertTraitDoesNotChange(model, 'values_changed'):
model.column_data[0].attr = 'a'
def test_no_data_row_header_data_update(self):
model = RowTableDataModel(row_header_data=AttributeDataAccessor(
attr='a',
value_type=IntValue(),
),
column_data=[
AttributeDataAccessor(
attr='b',
value_type=IntValue(),
),
AttributeDataAccessor(
attr='c',
value_type=TextValue(),
)
])
# check that updating accessors is safe with empty data
with self.assertTraitDoesNotChange(model, 'values_changed'):
model.row_header_data.attr = 'b'
def test_set_value_error(self):
accessor = AttributeDataAccessor()
obj = AttributeDummy('test_value')
with self.assertRaises(DataViewSetError):
accessor.set_value(obj, 'new_value')
def create_accessor(self):
return AttributeDataAccessor(
attr='attr_value',
value_type=TextValue(),
)