async def METHOD_NAME(  # NOQA
    self, context_mock
):
    context_mock.return_value = self.context
    crypto = CryptoURL("ACME-SEC")
    url = crypto.generate(image_url="watermark.png")
    self.context.request = self.get_request(url=url)
    # save on result storage
    response = await self.async_fetch(url)
    expect(response.code).to_equal(200)
    expect(response.headers).not_to_include("Vary")
    expect(response.body).to_be_png()