'ExtendsNode.find_template() initializes history with self.origin
(#28071).'

def test_block_override_in_extended_included_template(self):

    engine = Engine(loaders=[['django.template.loaders.locmem.Loader', {'base.html': "{%    extends    'base.html'    %}{%    block    base    %}{{    block.super    }}2{%    endblock    %}", 'included.html': "{%    extends    'included.html'    %}{%    block    included    %}{{    block.super    }}B{%    endblock    %}"}], ['django.template.loaders.locmem.Loader', {'base.html': "{%    block    base    %}1{%    endblock    %}{%    include    'included.html'    %}", 'included.html': '{%    block    included    %}A{%    endblock    %}'}]])
    template = engine.get_template('base.html')
    self.assertEqual(template.render(Context({})), '12AB')
