def test_different_types_is_error(self) -> None:
layer_1 = {'a': 'a'} # type: types.Layer
layer_2 = {'a': 1} # type: types.Layer
with self.assertRaises(flatten.TypeMismatchError) as cm:
flatten.flatten(layer_1, layer_2)
self.assertEqual(
"Entry type mismatch at 'a', got types str and int",
str(cm.exception),
)
def test_overlapping_deep_nested(self) -> None:
layer_1 = {'a': {'b': {'c': 4}}} # type: types.Layer
layer_2 = {'a': {'b': {'d': 5}}} # type: types.Layer
result = flatten.flatten(layer_1, layer_2)
self.assertEqual(
{'a': {
'b': {
'c': 4,
'd': 5
}
}},
result,
)
def test_null_removes_entry(self) -> None:
layer_1 = {'a': {'b': None}} # type: types.Layer
layer_2 = {'a': {'b': {'X': 1}, 'c': {'Y': 2}}} # type: types.Layer
result = flatten.flatten(layer_1, layer_2)
self.assertEqual(
{'a': {
'b': None,
'c': {
'Y': 2
}
}},
result,
)
def test_overlapping_shallow_nested(self) -> None:
layer_1 = {'a': {'b': {'X': 4}}} # type: types.Layer
layer_2 = {'a': {'c': {'Y': 5}}} # type: types.Layer
result = flatten.flatten(layer_1, layer_2)
self.assertEqual(
{'a': {
'b': {
'X': 4
},
'c': {
'Y': 5
},
}},
result,
)
def test_null_removes_entry_when_further_overridden(self) -> None:
layer_1 = {'a': {'b': {'Z': 1}}} # type: types.Layer
layer_2 = {'a': {'b': None}} # type: types.Layer
layer_3 = {'a': {'b': {'X': 1}, 'c': {'Y': 2}}} # type: types.Layer
result = flatten.flatten(layer_1, layer_2, layer_3)
self.assertEqual(
{'a': {
'b': {
'Z': 1
},
'c': {
'Y': 2
}
}},
result,
)
def test_single_layer(self) -> None:
layer = {'a': 1, 'b': 2} # type: types.Layer
result = flatten.flatten(layer)
self.assertEqual({'a': 1, 'b': 2}, result)
def test_overlapping_list(self) -> None:
layer_1 = {'a': 1, 'b': [2]} # type: types.Layer
layer_2 = {'b': [42]} # type: types.Layer
result = flatten.flatten(layer_1, layer_2)
self.assertEqual({'a': 1, 'b': [2]}, result)
def test_overlapping_scalar(self) -> None:
layer_1 = {'a': 1, 'b': 2} # type: types.Layer
layer_2 = {'b': 42} # type: types.Layer
result = flatten.flatten(layer_1, layer_2)
self.assertEqual({'a': 1, 'b': 2}, result)
def test_distinct_layers(self) -> None:
layer_1 = {'a': 1} # type: types.Layer
layer_2 = {'b': 2} # type: types.Layer
layer_3 = {'c': 3} # type: types.Layer
result = flatten.flatten(layer_1, layer_2, layer_3)
self.assertEqual({'a': 1, 'b': 2, 'c': 3}, result)