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import attr
import pytest
import attrs
from web_poet import ItemPage, field, Returns
from web_poet.pages import ItemT
@attrs.define
class Item:
name: str
@pytest.mark.mypy_testing
@pytest.mark.xfail
async def test_item_page() -> None:
class MyPage(ItemPage):
@field
def name(self):
return "hello"
page = MyPage()
item = await page.to_item()
reveal_type(item) # R: dict
@pytest.mark.mypy_testing
async def test_item_page_parametrized() -> None:
class MyPage(ItemPage[Item]):
@field
def name(self):
return "hello"
page = MyPage()
item = await page.to_item()
reveal_type(item) # R: __main__.Item
@pytest.mark.mypy_testing
async def test_item_page_parametrized_subclass() -> None:
class BasePage(ItemPage[Item]):
@field
def name(self):
return "hello"
class Subclass(BasePage):
pass
page = Subclass()
item = await page.to_item()
reveal_type(item) # R: __main__.Item
@pytest.mark.mypy_testing
async def test_item_page_subclass_parametrized() -> None:
class BasePage(ItemPage[ItemT]):
@field
def name(self):
return "hello"
class Subclass(BasePage[Item]):
pass
page = Subclass()
item = await page.to_item()
reveal_type(item) # R: __main__.Item
@pytest.mark.mypy_testing
@pytest.mark.xfail
async def test_item_page_change_type() -> None:
class BasePage(ItemPage[Item]):
@field
def name(self):
return "hello"
@attr.define
class MyItem(Item):
price: float
class Subclass(BasePage, Returns[MyItem]):
@field
def price(self):
return 123
page = Subclass()
item = await page.to_item()
reveal_type(item) # R: MyItem
|
