HTML 字符串的漂亮打印assertEqual()

Question

我想比较 python 单元测试中包含 html 的两个字符串。

是否有一种方法可以以人类友好（类似差异）版本输出结果？

Answer 1

我（问这个问题的人）现在使用 BeautfulSoup：

def assertEqualHTML(string1, string2, file1='', file2=''):
    u'''
    Compare two unicode strings containing HTML.
    A human friendly diff goes to logging.error() if there
    are not equal, and an exception gets raised.
    '''
    from BeautifulSoup import BeautifulSoup as bs
    import difflib
    def short(mystr):
        max=20
        if len(mystr)>max:
            return mystr[:max]
        return mystr
    p=[]
    for mystr, file in [(string1, file1), (string2, file2)]:
        if not isinstance(mystr, unicode):
            raise Exception(u'string ist not unicode: %r %s' % (short(mystr), file))
        soup=bs(mystr)
        pretty=soup.prettify()
        p.append(pretty)
    if p[0]!=p[1]:
        for line in difflib.unified_diff(p[0].splitlines(), p[1].splitlines(), fromfile=file1, tofile=file2):
            logging.error(line)
        raise Exception('Not equal %s %s' % (file1, file2))