def test_deprecated_is_instance(self):
from itemadapter.utils import is_scrapy_item
with warnings.catch_warnings(record=True) as caught:
is_scrapy_item(1)
self.assertEqual(len(caught), 1)
self.assertTrue(issubclass(caught[0].category, DeprecationWarning))
self.assertEqual(
"itemadapter.utils.is_scrapy_item is deprecated"
" and it will be removed in a future version",
str(caught[0].message),
)
def test_removed_baseitem(self):
class MockItemModule:
Item = ScrapyItem
with mock.patch("scrapy.item", MockItemModule):
self.assertFalse(is_scrapy_item(dict()))
def test_deprecated_baseitem(self):
class SubClassedBaseItem(scrapy.item.BaseItem):
pass
self.assertTrue(is_scrapy_item(scrapy.item.BaseItem()))
self.assertTrue(is_scrapy_item(SubClassedBaseItem()))
def test_true(self):
self.assertTrue(is_scrapy_item(ScrapyItem()))
self.assertTrue(is_scrapy_item(ScrapySubclassedItem()))
self.assertTrue(
is_scrapy_item(ScrapySubclassedItem(name="asdf", value=1234)))
def test_module_not_available(self):
self.assertFalse(
is_scrapy_item(ScrapySubclassedItem(name="asdf", value=1234)))
def test_false(self):
self.assertFalse(is_scrapy_item(int))
self.assertFalse(is_scrapy_item(sum))
self.assertFalse(is_scrapy_item(1234))
self.assertFalse(is_scrapy_item(object()))
self.assertFalse(is_scrapy_item(AttrsItem()))
self.assertFalse(is_scrapy_item("a string"))
self.assertFalse(is_scrapy_item(b"some bytes"))
self.assertFalse(is_scrapy_item({"a": "dict"}))
self.assertFalse(is_scrapy_item(["a", "list"]))
self.assertFalse(is_scrapy_item(("a", "tuple")))
self.assertFalse(is_scrapy_item({"a", "set"}))
self.assertFalse(is_scrapy_item(ScrapySubclassedItem))
def is_item(cls, item: Any) -> bool:
return is_scrapy_item(item)