def get_injector_for_testing(
providers: Mapping,
additional_settings: Dict = None,
overrides_registry: Optional[OverridesRegistryBase] = None
) -> Injector:
"""
Return an :class:`Injector` using a fake crawler.
Useful for testing providers
"""
class MySpider(Spider):
name = "my_spider"
settings = Settings({
**(additional_settings or {}), "SCRAPY_POET_PROVIDERS":
providers
})
crawler = Crawler(MySpider)
crawler.settings = settings
spider = MySpider()
spider.settings = settings
crawler.spider = spider
return Injector(crawler, overrides_registry=overrides_registry)
