def test_removed_attribute():
root = dict(a='value for a', b='value for b')
head = dict(a='value for a')
update = dict(a='value for a', c='value for c')
m = Merger().merge(root=root, head=head, update=update)
def test_simple_values_attribute_merges():
root = dict(a=5, b='42')
update = copy.deepcopy(root)
update['d'] = 'foo'
head = copy.deepcopy(root)
head['c'] = 'bar'
result = Merger().merge(root=root, head=head, update=update)
assert result == dict(a=5, b='42', d='foo', c='bar')
def test_set_none():
root = dict(items={})
head = dict(items={})
update = dict(items=None)
result = Merger().merge(root=root, head=head, update=update)
assert result == {'items': None}
def test_merge_list_and_dict():
root = dict(items={})
head = dict(items=None)
update = dict(items=[])
with pytest.raises(TypeError) as excinfo:
Merger().merge(root=root, head=head, update=update)
excinfo.match('Unable to merge')
def test_simple_deletes():
root = dict(items=['root', 'head', 'update', 42])
head = dict(items=[
'root',
'head',
42,
])
update = dict(items=['root', 'update', 'added'])
result = Merger().merge(root=root, head=head, update=update)
assert result == {'items': ['root', 'added']}
def test_simple_values_no_conflict_all_from_update():
root = head = dict(a=5,
a1=5.1,
b='barbar',
c=None,
d=True,
e='Not updated')
update = dict(a=6.5,
a1=6.1,
b='fubar',
c='Not none',
d=False,
e='Not updated')
expected = copy.deepcopy(update)
result = Merger().merge(root=root, head=head, update=update)
assert result == expected
assert result == update
assert result is not update, 'Must be copy'
def test_list_set_merges_missing_id():
head = dict(items=[
{
'id': '3',
'data': '55'
},
])
root = dict(items=[])
update = dict(items=[
{
'wrong_id': '3',
'data': '55'
},
])
try:
result = Merger(list_conflict_handlers={
'items': ObjectSetConflictHandler(id='id')
}).merge(root=root, head=head, update=update)
except ValueError:
pass
else:
assert False, 'KeyError was not thrown!'
def test_list_set_merges():
root = dict(items=[{
'id': 42,
'data': 'value'
}, {
'id': '3',
'data': 55
}, {
'id': 'deleted in head',
'data': 'deleted'
}, {
'id': 'deleted in update',
'data': 'deleted'
}, {
'id': 'deleted in head and update',
'data': 'deleted'
}],
id='root')
head = dict(items=[{
'id': 42,
'data': 'value'
}, {
'id': '3',
'data': False
}, {
'id': '55',
'data': 'foo'
}, {
'id': 'deleted in update',
'data': 'updated in head'
}],
id='head')
update = dict(items=[{
'id': '3',
'data': '55'
}, {
'id': 42,
'data': 'value from update'
}, {
'id': '27',
'data': 'bar'
}, {
'id': 'deleted in head',
'data': 'updated in update'
}],
id='update')
result = Merger(list_conflict_handlers={
'items': ObjectSetConflictHandler(id='id'),
},
value_conflict_handlers={
'id': ValueConflictHandler(DefaultTo.HEAD)
}).merge(root=root, head=head, update=update)
expected_items = [{
'data': '55',
'id': '3'
}, {
'data': 'value from update',
'id': 42
}, {
'data': 'bar',
'id': '27'
}, {
'data': 'foo',
'id': '55'
}, {
'id': 'deleted in head',
'data': 'updated in update'
}, {
'id': 'deleted in update',
'data': 'updated in head'
}]
expected_items = make_comparable_item(expected_items)
actual_items = make_comparable_item(result.pop('items'))
assert result == {'id': 'head'}
assert expected_items == actual_items
def test_merger__type():
m = Merger()
with pytest.raises(TypeError) as e:
m._type(lambda: 42)
e.match('The value .* is not a JSON value')