diff --git a/tests/test_loader_deprecated.py b/tests/test_loader_deprecated.py
deleted file mode 100644
index 0d7921b1d..000000000
--- a/tests/test_loader_deprecated.py
+++ /dev/null
@@ -1,750 +0,0 @@
-"""
-These tests are kept as references from the ones that were ported to a itemloaders library.
-Once we remove the references from scrapy, we can remove these tests.
-"""
-
-import unittest
-from functools import partial
-
-import pytest
-from itemloaders.processors import (
-    Compose,
-    Identity,
-    Join,
-    MapCompose,
-    SelectJmes,
-    TakeFirst,
-)
-
-from scrapy.item import Field, Item
-from scrapy.loader import ItemLoader
-
-
-# test items
-class NameItem(Item):
-    name = Field()
-
-
-class SummaryItem(NameItem):
-    url = Field()
-    summary = Field()
-
-
-# test item loaders
-class NameItemLoader(ItemLoader):
-    default_item_class = SummaryItem
-
-
-class ProcessorItemLoader(NameItemLoader):
-    name_in = MapCompose(lambda v: v.title())
-
-
-class DefaultedItemLoader(NameItemLoader):
-    default_input_processor = MapCompose(lambda v: v[:-1])
-
-
-# test processors
-def processor_with_args(value, other=None, loader_context=None):
-    if "key" in loader_context:
-        return loader_context["key"]
-    return value
-
-
-class BasicItemLoaderTest(unittest.TestCase):
-    def test_load_item_using_default_loader(self):
-        i = SummaryItem()
-        i["summary"] = "lala"
-        il = ItemLoader(item=i)
-        il.add_value("name", "marta")
-        item = il.load_item()
-        assert item is i
-        self.assertEqual(item["summary"], ["lala"])
-        self.assertEqual(item["name"], ["marta"])
-
-    def test_load_item_using_custom_loader(self):
-        il = ProcessorItemLoader()
-        il.add_value("name", "marta")
-        item = il.load_item()
-        self.assertEqual(item["name"], ["Marta"])
-
-    def test_load_item_ignore_none_field_values(self):
-        def validate_sku(value):
-            # Let's assume a SKU is only digits.
-            return value if value.isdigit() else None
-
-        class MyLoader(ItemLoader):
-            name_out = Compose(lambda vs: vs[0])  # take first which allows empty values
-            price_out = Compose(TakeFirst(), float)
-            sku_out = Compose(TakeFirst(), validate_sku)
-
-        valid_fragment = "SKU: 1234"
-        invalid_fragment = "SKU: not available"
-        sku_re = "SKU: (.+)"
-
-        il = MyLoader(item={})
-        # Should not return "sku: None".
-        il.add_value("sku", [invalid_fragment], re=sku_re)
-        # Should not ignore empty values.
-        il.add_value("name", "")
-        il.add_value("price", ["0"])
-        self.assertEqual(
-            il.load_item(),
-            {
-                "name": "",
-                "price": 0.0,
-            },
-        )
-
-        il.replace_value("sku", [valid_fragment], re=sku_re)
-        self.assertEqual(il.load_item()["sku"], "1234")
-
-    def test_self_referencing_loader(self):
-        class MyLoader(ItemLoader):
-            url_out = TakeFirst()
-
-            def img_url_out(self, values):
-                return (self.get_output_value("url") or "") + values[0]
-
-        il = MyLoader(item={})
-        il.add_value("url", "http://example.com/")
-        il.add_value("img_url", "1234.png")
-        self.assertEqual(
-            il.load_item(),
-            {
-                "url": "http://example.com/",
-                "img_url": "http://example.com/1234.png",
-            },
-        )
-
-        il = MyLoader(item={})
-        il.add_value("img_url", "1234.png")
-        self.assertEqual(
-            il.load_item(),
-            {
-                "img_url": "1234.png",
-            },
-        )
-
-    def test_add_value(self):
-        il = ProcessorItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_collected_values("name"), ["Marta"])
-        self.assertEqual(il.get_output_value("name"), ["Marta"])
-        il.add_value("name", "pepe")
-        self.assertEqual(il.get_collected_values("name"), ["Marta", "Pepe"])
-        self.assertEqual(il.get_output_value("name"), ["Marta", "Pepe"])
-
-        # test add object value
-        il.add_value("summary", {"key": 1})
-        self.assertEqual(il.get_collected_values("summary"), [{"key": 1}])
-
-        il.add_value(None, "Jim", lambda x: {"name": x})
-        self.assertEqual(il.get_collected_values("name"), ["Marta", "Pepe", "Jim"])
-
-    def test_add_zero(self):
-        il = NameItemLoader()
-        il.add_value("name", 0)
-        self.assertEqual(il.get_collected_values("name"), [0])
-
-    def test_replace_value(self):
-        il = ProcessorItemLoader()
-        il.replace_value("name", "marta")
-        self.assertEqual(il.get_collected_values("name"), ["Marta"])
-        self.assertEqual(il.get_output_value("name"), ["Marta"])
-        il.replace_value("name", "pepe")
-        self.assertEqual(il.get_collected_values("name"), ["Pepe"])
-        self.assertEqual(il.get_output_value("name"), ["Pepe"])
-
-        il.replace_value(None, "Jim", lambda x: {"name": x})
-        self.assertEqual(il.get_collected_values("name"), ["Jim"])
-
-    def test_get_value(self):
-        il = NameItemLoader()
-        self.assertEqual("FOO", il.get_value(["foo", "bar"], TakeFirst(), str.upper))
-        self.assertEqual(
-            ["foo", "bar"], il.get_value(["name:foo", "name:bar"], re="name:(.*)$")
-        )
-        self.assertEqual(
-            "foo", il.get_value(["name:foo", "name:bar"], TakeFirst(), re="name:(.*)$")
-        )
-
-        il.add_value("name", ["name:foo", "name:bar"], TakeFirst(), re="name:(.*)$")
-        self.assertEqual(["foo"], il.get_collected_values("name"))
-        il.replace_value("name", "name:bar", re="name:(.*)$")
-        self.assertEqual(["bar"], il.get_collected_values("name"))
-
-    def test_iter_on_input_processor_input(self):
-        class NameFirstItemLoader(NameItemLoader):
-            name_in = TakeFirst()
-
-        il = NameFirstItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_collected_values("name"), ["marta"])
-        il = NameFirstItemLoader()
-        il.add_value("name", ["marta", "jose"])
-        self.assertEqual(il.get_collected_values("name"), ["marta"])
-
-        il = NameFirstItemLoader()
-        il.replace_value("name", "marta")
-        self.assertEqual(il.get_collected_values("name"), ["marta"])
-        il = NameFirstItemLoader()
-        il.replace_value("name", ["marta", "jose"])
-        self.assertEqual(il.get_collected_values("name"), ["marta"])
-
-        il = NameFirstItemLoader()
-        il.add_value("name", "marta")
-        il.add_value("name", ["jose", "pedro"])
-        self.assertEqual(il.get_collected_values("name"), ["marta", "jose"])
-
-    def test_map_compose_filter(self):
-        def filter_world(x):
-            return None if x == "world" else x
-
-        proc = MapCompose(filter_world, str.upper)
-        self.assertEqual(
-            proc(["hello", "world", "this", "is", "scrapy"]),
-            ["HELLO", "THIS", "IS", "SCRAPY"],
-        )
-
-    def test_map_compose_filter_multil(self):
-        class TestItemLoader(NameItemLoader):
-            name_in = MapCompose(lambda v: v.title(), lambda v: v[:-1])
-
-        il = TestItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["Mart"])
-        item = il.load_item()
-        self.assertEqual(item["name"], ["Mart"])
-
-    def test_default_input_processor(self):
-        il = DefaultedItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["mart"])
-
-    def test_inherited_default_input_processor(self):
-        class InheritDefaultedItemLoader(DefaultedItemLoader):
-            pass
-
-        il = InheritDefaultedItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["mart"])
-
-    def test_input_processor_inheritance(self):
-        class ChildItemLoader(ProcessorItemLoader):
-            url_in = MapCompose(lambda v: v.lower())
-
-        il = ChildItemLoader()
-        il.add_value("url", "HTTP://scrapy.ORG")
-        self.assertEqual(il.get_output_value("url"), ["http://scrapy.org"])
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["Marta"])
-
-        class ChildChildItemLoader(ChildItemLoader):
-            url_in = MapCompose(lambda v: v.upper())
-            summary_in = MapCompose(lambda v: v)
-
-        il = ChildChildItemLoader()
-        il.add_value("url", "http://scrapy.org")
-        self.assertEqual(il.get_output_value("url"), ["HTTP://SCRAPY.ORG"])
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["Marta"])
-
-    def test_empty_map_compose(self):
-        class IdentityDefaultedItemLoader(DefaultedItemLoader):
-            name_in = MapCompose()
-
-        il = IdentityDefaultedItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["marta"])
-
-    def test_identity_input_processor(self):
-        class IdentityDefaultedItemLoader(DefaultedItemLoader):
-            name_in = Identity()
-
-        il = IdentityDefaultedItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["marta"])
-
-    def test_extend_custom_input_processors(self):
-        class ChildItemLoader(ProcessorItemLoader):
-            name_in = MapCompose(ProcessorItemLoader.name_in, str.swapcase)
-
-        il = ChildItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["mARTA"])
-
-    def test_extend_default_input_processors(self):
-        class ChildDefaultedItemLoader(DefaultedItemLoader):
-            name_in = MapCompose(
-                DefaultedItemLoader.default_input_processor, str.swapcase
-            )
-
-        il = ChildDefaultedItemLoader()
-        il.add_value("name", "marta")
-        self.assertEqual(il.get_output_value("name"), ["MART"])
-
-    def test_output_processor_using_function(self):
-        il = ProcessorItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), ["Mar", "Ta"])
-
-        class TakeFirstItemLoader(ProcessorItemLoader):
-            name_out = " ".join
-
-        il = TakeFirstItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), "Mar Ta")
-
-    def test_output_processor_error(self):
-        class TestItemLoader(ItemLoader):
-            default_item_class = SummaryItem
-            name_out = MapCompose(float)
-
-        il = TestItemLoader()
-        il.add_value("name", ["$10"])
-        try:
-            float("$10")
-        except Exception as e:
-            expected_exc_str = str(e)
-
-        exc = None
-        try:
-            il.load_item()
-        except Exception as e:
-            exc = e
-        assert isinstance(exc, ValueError)
-        s = str(exc)
-        assert "name" in s, s
-        assert "$10" in s, s
-        assert "ValueError" in s, s
-        assert expected_exc_str in s, s
-
-    def test_output_processor_using_classes(self):
-        il = ProcessorItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), ["Mar", "Ta"])
-
-        class TakeFirstItemLoader(ProcessorItemLoader):
-            name_out = Join()
-
-        il = TakeFirstItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), "Mar Ta")
-
-        class TakeFirstItemLoader2(ProcessorItemLoader):
-            name_out = Join("<br>")
-
-        il = TakeFirstItemLoader2()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), "Mar<br>Ta")
-
-    def test_default_output_processor(self):
-        il = ProcessorItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), ["Mar", "Ta"])
-
-        class LalaItemLoader(ProcessorItemLoader):
-            default_output_processor = Identity()
-
-        il = LalaItemLoader()
-        il.add_value("name", ["mar", "ta"])
-        self.assertEqual(il.get_output_value("name"), ["Mar", "Ta"])
-
-    def test_loader_context_on_declaration(self):
-        class ChildItemLoader(ProcessorItemLoader):
-            url_in = MapCompose(processor_with_args, key="val")
-
-        il = ChildItemLoader()
-        il.add_value("url", "text")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-        il.replace_value("url", "text2")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-
-    def test_loader_context_on_instantiation(self):
-        class ChildItemLoader(ProcessorItemLoader):
-            url_in = MapCompose(processor_with_args)
-
-        il = ChildItemLoader(key="val")
-        il.add_value("url", "text")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-        il.replace_value("url", "text2")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-
-    def test_loader_context_on_assign(self):
-        class ChildItemLoader(ProcessorItemLoader):
-            url_in = MapCompose(processor_with_args)
-
-        il = ChildItemLoader()
-        il.context["key"] = "val"
-        il.add_value("url", "text")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-        il.replace_value("url", "text2")
-        self.assertEqual(il.get_output_value("url"), ["val"])
-
-    def test_item_passed_to_input_processor_functions(self):
-        def processor(value, loader_context):
-            return loader_context["item"]["name"]
-
-        class ChildItemLoader(ProcessorItemLoader):
-            url_in = MapCompose(processor)
-
-        it = SummaryItem(name="marta")
-        il = ChildItemLoader(item=it)
-        il.add_value("url", "text")
-        self.assertEqual(il.get_output_value("url"), ["marta"])
-        il.replace_value("url", "text2")
-        self.assertEqual(il.get_output_value("url"), ["marta"])
-
-    def test_compose_processor(self):
-        class TestItemLoader(NameItemLoader):
-            name_out = Compose(lambda v: v[0], lambda v: v.title(), lambda v: v[:-1])
-
-        il = TestItemLoader()
-        il.add_value("name", ["marta", "other"])
-        self.assertEqual(il.get_output_value("name"), "Mart")
-        item = il.load_item()
-        self.assertEqual(item["name"], "Mart")
-
-    def test_partial_processor(self):
-        def join(values, sep=None, loader_context=None, ignored=None):
-            if sep is not None:
-                return sep.join(values)
-            if loader_context and "sep" in loader_context:
-                return loader_context["sep"].join(values)
-            return "".join(values)
-
-        class TestItemLoader(NameItemLoader):
-            name_out = Compose(partial(join, sep="+"))
-            url_out = Compose(partial(join, loader_context={"sep": "."}))
-            summary_out = Compose(partial(join, ignored="foo"))
-
-        il = TestItemLoader()
-        il.add_value("name", ["rabbit", "hole"])
-        il.add_value("url", ["rabbit", "hole"])
-        il.add_value("summary", ["rabbit", "hole"])
-        item = il.load_item()
-        self.assertEqual(item["name"], "rabbit+hole")
-        self.assertEqual(item["url"], "rabbit.hole")
-        self.assertEqual(item["summary"], "rabbithole")
-
-    def test_error_input_processor(self):
-        class TestItem(Item):
-            name = Field()
-
-        class TestItemLoader(ItemLoader):
-            default_item_class = TestItem
-            name_in = MapCompose(float)
-
-        il = TestItemLoader()
-        with pytest.raises(
-            ValueError,
-            match="Error with input processor MapCompose: .* "
-            "error='ValueError: Error in MapCompose .* "
-            "error='ValueError: could not convert",
-        ):
-            il.add_value("name", ["marta", "other"])
-
-    def test_error_output_processor(self):
-        class TestItem(Item):
-            name = Field()
-
-        class TestItemLoader(ItemLoader):
-            default_item_class = TestItem
-            name_out = Compose(Join(), float)
-
-        il = TestItemLoader()
-        il.add_value("name", "marta")
-        with pytest.raises(
-            ValueError,
-            match="Error with output processor: .* "
-            "error='ValueError: Error in Compose .* "
-            "error='ValueError: could not convert",
-        ):
-            il.load_item()
-
-    def test_error_processor_as_argument(self):
-        class TestItem(Item):
-            name = Field()
-
-        class TestItemLoader(ItemLoader):
-            default_item_class = TestItem
-
-        il = TestItemLoader()
-        with pytest.raises(
-            ValueError,
-            match=r"Error with processor Compose .* "
-            r"error='ValueError: Error in Compose .* "
-            r"error='TypeError: float\(\) argument",
-        ):
-            il.add_value("name", ["marta", "other"], Compose(float))
-
-
-class InitializationFromDictTest(unittest.TestCase):
-    item_class = dict
-
-    def test_keep_single_value(self):
-        """Loaded item should contain values from the initial item"""
-        input_item = self.item_class(name="foo")
-        il = ItemLoader(item=input_item)
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo"]})
-
-    def test_keep_list(self):
-        """Loaded item should contain values from the initial item"""
-        input_item = self.item_class(name=["foo", "bar"])
-        il = ItemLoader(item=input_item)
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo", "bar"]})
-
-    def test_add_value_singlevalue_singlevalue(self):
-        """Values added after initialization should be appended"""
-        input_item = self.item_class(name="foo")
-        il = ItemLoader(item=input_item)
-        il.add_value("name", "bar")
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo", "bar"]})
-
-    def test_add_value_singlevalue_list(self):
-        """Values added after initialization should be appended"""
-        input_item = self.item_class(name="foo")
-        il = ItemLoader(item=input_item)
-        il.add_value("name", ["item", "loader"])
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo", "item", "loader"]})
-
-    def test_add_value_list_singlevalue(self):
-        """Values added after initialization should be appended"""
-        input_item = self.item_class(name=["foo", "bar"])
-        il = ItemLoader(item=input_item)
-        il.add_value("name", "qwerty")
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo", "bar", "qwerty"]})
-
-    def test_add_value_list_list(self):
-        """Values added after initialization should be appended"""
-        input_item = self.item_class(name=["foo", "bar"])
-        il = ItemLoader(item=input_item)
-        il.add_value("name", ["item", "loader"])
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(dict(loaded_item), {"name": ["foo", "bar", "item", "loader"]})
-
-    def test_get_output_value_singlevalue(self):
-        """Getting output value must not remove value from item"""
-        input_item = self.item_class(name="foo")
-        il = ItemLoader(item=input_item)
-        self.assertEqual(il.get_output_value("name"), ["foo"])
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(loaded_item, {"name": ["foo"]})
-
-    def test_get_output_value_list(self):
-        """Getting output value must not remove value from item"""
-        input_item = self.item_class(name=["foo", "bar"])
-        il = ItemLoader(item=input_item)
-        self.assertEqual(il.get_output_value("name"), ["foo", "bar"])
-        loaded_item = il.load_item()
-        self.assertIsInstance(loaded_item, self.item_class)
-        self.assertEqual(loaded_item, {"name": ["foo", "bar"]})
-
-    def test_values_single(self):
-        """Values from initial item must be added to loader._values"""
-        input_item = self.item_class(name="foo")
-        il = ItemLoader(item=input_item)
-        self.assertEqual(il._values.get("name"), ["foo"])
-
-    def test_values_list(self):
-        """Values from initial item must be added to loader._values"""
-        input_item = self.item_class(name=["foo", "bar"])
-        il = ItemLoader(item=input_item)
-        self.assertEqual(il._values.get("name"), ["foo", "bar"])
-
-
-class BaseNoInputReprocessingLoader(ItemLoader):
-    title_in = MapCompose(str.upper)
-    title_out = TakeFirst()
-
-
-class NoInputReprocessingDictLoader(BaseNoInputReprocessingLoader):
-    default_item_class = dict
-
-
-class NoInputReprocessingFromDictTest(unittest.TestCase):
-    """
-    Loaders initialized from loaded items must not reprocess fields (dict instances)
-    """
-
-    def test_avoid_reprocessing_with_initial_values_single(self):
-        il = NoInputReprocessingDictLoader(item={"title": "foo"})
-        il_loaded = il.load_item()
-        self.assertEqual(il_loaded, {"title": "foo"})
-        self.assertEqual(
-            NoInputReprocessingDictLoader(item=il_loaded).load_item(), {"title": "foo"}
-        )
-
-    def test_avoid_reprocessing_with_initial_values_list(self):
-        il = NoInputReprocessingDictLoader(item={"title": ["foo", "bar"]})
-        il_loaded = il.load_item()
-        self.assertEqual(il_loaded, {"title": "foo"})
-        self.assertEqual(
-            NoInputReprocessingDictLoader(item=il_loaded).load_item(), {"title": "foo"}
-        )
-
-    def test_avoid_reprocessing_without_initial_values_single(self):
-        il = NoInputReprocessingDictLoader()
-        il.add_value("title", "foo")
-        il_loaded = il.load_item()
-        self.assertEqual(il_loaded, {"title": "FOO"})
-        self.assertEqual(
-            NoInputReprocessingDictLoader(item=il_loaded).load_item(), {"title": "FOO"}
-        )
-
-    def test_avoid_reprocessing_without_initial_values_list(self):
-        il = NoInputReprocessingDictLoader()
-        il.add_value("title", ["foo", "bar"])
-        il_loaded = il.load_item()
-        self.assertEqual(il_loaded, {"title": "FOO"})
-        self.assertEqual(
-            NoInputReprocessingDictLoader(item=il_loaded).load_item(), {"title": "FOO"}
-        )
-
-
-class TestOutputProcessorDict(unittest.TestCase):
-    def test_output_processor(self):
-        class TempDict(dict):
-            def __init__(self, *args, **kwargs):
-                super().__init__(self, *args, **kwargs)
-                self.setdefault("temp", 0.3)
-
-        class TempLoader(ItemLoader):
-            default_item_class = TempDict
-            default_input_processor = Identity()
-            default_output_processor = Compose(TakeFirst())
-
-        loader = TempLoader()
-        item = loader.load_item()
-        self.assertIsInstance(item, TempDict)
-        self.assertEqual(dict(item), {"temp": 0.3})
-
-
-class ProcessorsTest(unittest.TestCase):
-    def test_take_first(self):
-        proc = TakeFirst()
-        self.assertEqual(proc([None, "", "hello", "world"]), "hello")
-        self.assertEqual(proc([None, "", 0, "hello", "world"]), 0)
-
-    def test_identity(self):
-        proc = Identity()
-        self.assertEqual(
-            proc([None, "", "hello", "world"]), [None, "", "hello", "world"]
-        )
-
-    def test_join(self):
-        proc = Join()
-        with pytest.raises(TypeError):
-            proc([None, "", "hello", "world"])
-        self.assertEqual(proc(["", "hello", "world"]), " hello world")
-        self.assertEqual(proc(["hello", "world"]), "hello world")
-        self.assertIsInstance(proc(["hello", "world"]), str)
-
-    def test_compose(self):
-        proc = Compose(lambda v: v[0], str.upper)
-        self.assertEqual(proc(["hello", "world"]), "HELLO")
-        proc = Compose(str.upper)
-        self.assertEqual(proc(None), None)
-        proc = Compose(str.upper, stop_on_none=False)
-        with pytest.raises(
-            ValueError,
-            match="Error in Compose with .* error='TypeError: (descriptor 'upper'|'str' object expected)",
-        ):
-            proc(None)
-        proc = Compose(str.upper, lambda x: x + 1)
-        with pytest.raises(
-            ValueError,
-            match="Error in Compose with .* error='TypeError: (can only|unsupported operand)",
-        ):
-            proc("hello")
-
-    def test_mapcompose(self):
-        def filter_world(x):
-            return None if x == "world" else x
-
-        proc = MapCompose(filter_world, str.upper)
-        self.assertEqual(
-            proc(["hello", "world", "this", "is", "scrapy"]),
-            ["HELLO", "THIS", "IS", "SCRAPY"],
-        )
-        proc = MapCompose(filter_world, str.upper)
-        self.assertEqual(proc(None), [])
-        proc = MapCompose(filter_world, str.upper)
-        with pytest.raises(
-            ValueError,
-            match="Error in MapCompose with .* error='TypeError: (descriptor 'upper'|'str' object expected)",
-        ):
-            proc([1])
-        proc = MapCompose(filter_world, lambda x: x + 1)
-        with pytest.raises(
-            ValueError,
-            match="Error in MapCompose with .* error='TypeError: (can only|unsupported operand)",
-        ):
-            proc("hello")
-
-
-class SelectJmesTestCase(unittest.TestCase):
-    test_list_equals = {
-        "simple": ("foo.bar", {"foo": {"bar": "baz"}}, "baz"),
-        "invalid": ("foo.bar.baz", {"foo": {"bar": "baz"}}, None),
-        "top_level": ("foo", {"foo": {"bar": "baz"}}, {"bar": "baz"}),
-        "double_vs_single_quote_string": ("foo.bar", {"foo": {"bar": "baz"}}, "baz"),
-        "dict": (
-            "foo.bar[*].name",
-            {"foo": {"bar": [{"name": "one"}, {"name": "two"}]}},
-            ["one", "two"],
-        ),
-        "list": ("[1]", [1, 2], 2),
-    }
-
-    def test_output(self):
-        for k, v in self.test_list_equals.items():
-            expr, test_list, expected = v
-            test = SelectJmes(expr)(test_list)
-            self.assertEqual(
-                test, expected, msg=f'test "{k}" got {test} expected {expected}'
-            )
-
-
-# Functions as processors
-
-
-def function_processor_strip(iterable):
-    return [x.strip() for x in iterable]
-
-
-def function_processor_upper(iterable):
-    return [x.upper() for x in iterable]
-
-
-class FunctionProcessorItem(Item):
-    foo = Field(
-        input_processor=function_processor_strip,
-        output_processor=function_processor_upper,
-    )
-
-
-class FunctionProcessorDictLoader(ItemLoader):
-    default_item_class = dict
-    foo_in = function_processor_strip
-    foo_out = function_processor_upper
-
-
-class FunctionProcessorTestCase(unittest.TestCase):
-    def test_processor_defined_in_item_loader(self):
-        lo = FunctionProcessorDictLoader()
-        lo.add_value("foo", "  bar  ")
-        lo.add_value("foo", ["  asdf  ", "  qwerty  "])
-        self.assertEqual(dict(lo.load_item()), {"foo": ["BAR", "ASDF", "QWERTY"]})