from nose.tools import istest, assert_equal

from .testing import test_path

import mammoth


@istest
def docx_containing_one_paragraph_is_converted_to_single_p_element():
    with open(test_path("single-paragraph.docx"), "rb") as fileobj:
        result = mammoth.convert_to_html(fileobj=fileobj)
        assert_equal("<p>Walking on imported air</p>", result.value)
        assert_equal([], result.messages)


@istest
def inline_images_are_included_in_output():
    with open(test_path("tiny-picture.docx"), "rb") as fileobj:
        result = mammoth.convert_to_html(fileobj=fileobj)
        assert_equal("""<p><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAIAAAACUFjqAAAAAXNSR0IArs4c6QAAAAlwSFlzAAAOvgAADr4B6kKxwAAAABNJREFUKFNj/M+ADzDhlWUYqdIAQSwBE8U+X40AAAAASUVORK5CYII=" /></p>""", result.value)
        assert_equal([], result.messages)
        

@istest
def simple_list_is_converted_to_list_elements():
    with open(test_path("simple-list.docx"), "rb") as fileobj:
        result = mammoth.convert_to_html(fileobj=fileobj)
        assert_equal([], result.messages)
        assert_equal("<ul><li>Apple</li><li>Banana</li></ul>", result.value)


@istest
def transform_document_is_applied_to_document_before_conversion():
    def transform_document(document):
        document.children[0].style_id = "Heading1"
        return document
    
    with open(test_path("single-paragraph.docx"), "rb") as fileobj:
        result = mammoth.convert_to_html(fileobj=fileobj, transform_document=transform_document)
        assert_equal("<h1>Walking on imported air</h1>", result.value)
        assert_equal([], result.messages)