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from __future__ import annotations
from abc import ABC, abstractmethod
from typing import Any
from itemloaders import ItemLoader
class TestInitializationBase(ABC):
@property
@abstractmethod
def item_class(self) -> type[Any]:
raise NotImplementedError
def test_keep_single_value(self) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo"]}
def test_keep_list(self) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo", "bar"]}
def test_add_value_singlevalue_singlevalue(
self,
) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo", "bar"]}
def test_add_value_singlevalue_list(self) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo", "item", "loader"]}
def test_add_value_list_singlevalue(self) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo", "bar", "qwerty"]}
def test_add_value_list_list(self) -> None:
"""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()
assert isinstance(loaded_item, self.item_class)
assert dict(loaded_item) == {"name": ["foo", "bar", "item", "loader"]}
def test_get_output_value_singlevalue(self) -> None:
"""Getting output value must not remove value from item"""
input_item = self.item_class(name="foo")
il = ItemLoader(item=input_item)
assert il.get_output_value("name") == ["foo"]
loaded_item = il.load_item()
assert isinstance(loaded_item, self.item_class)
assert loaded_item == {"name": ["foo"]}
def test_get_output_value_list(self) -> None:
"""Getting output value must not remove value from item"""
input_item = self.item_class(name=["foo", "bar"])
il = ItemLoader(item=input_item)
assert il.get_output_value("name") == ["foo", "bar"]
loaded_item = il.load_item()
assert isinstance(loaded_item, self.item_class)
assert loaded_item == {"name": ["foo", "bar"]}
def test_values_single(self) -> None:
"""Values from initial item must be added to loader._values"""
input_item = self.item_class(name="foo")
il = ItemLoader(item=input_item)
assert il._values.get("name") == ["foo"]
def test_values_list(self) -> None:
"""Values from initial item must be added to loader._values"""
input_item = self.item_class(name=["foo", "bar"])
il = ItemLoader(item=input_item)
assert il._values.get("name") == ["foo", "bar"]
class InitializationFromDictTest(TestInitializationBase):
item_class = dict
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