import io

from nose.tools import istest
from precisely import assert_that, has_attrs, is_sequence

import mammoth


@istest
def inline_is_available_as_alias_of_img_element():
    assert mammoth.images.inline is mammoth.images.img_element


@istest
def data_uri_encodes_images_in_base64():
    image_bytes = b"abc"
    image = mammoth.documents.Image(
        alt_text=None,
        content_type="image/jpeg",
        open=lambda: io.BytesIO(image_bytes),
    )

    result = mammoth.images.data_uri(image)

    assert_that(result, is_sequence(
        has_attrs(attributes={"src": "data:image/jpeg;base64,YWJj"}),
    ))