def testCssPseudoElementDoubleColon(self):
    self.VerifyContentsProducesOutput("\na:href,\nbr::after,\n::-webkit-scrollbar-thumb,\na:not([empty]):hover:focus:active, /* shouldn't catch here and above */\nabbr:after,\n.tree-label:empty:after,\nb:before,\n:-WebKit-ScrollBar {\n  rule: value;\n}", '\n- Pseudo-elements should use double colon (i.e. ::after).\n    :after (should be ::after)\n    :after (should be ::after)\n    :before (should be ::before)\n    :-WebKit-ScrollBar (should be ::-WebKit-ScrollBar)\n    ')
def testCssPseudoElementDoubleColon(self):
    self.VerifyContentsProducesOutput("\na:href,\nbr::after,\n::-webkit-scrollbar-thumb,\na:not([empty]):hover:focus:active, /* shouldn't catch here and above */\nabbr:after,\n.tree-label:empty:after,\nb:before,\n:-WebKit-ScrollBar {\n  rule: value;\n}", '\n- Pseudo-elements should use double colon (i.e. ::after).\n    :after (should be ::after)\n    :after (should be ::after)\n    :before (should be ::before)\n    :-WebKit-ScrollBar (should be ::-WebKit-ScrollBar)\n    ')