def test_can_register_handlers():
def handler(page_instructions, renderer, assembly):
global handler_called
assembly.add_page_instructions(page_instructions, "dummyapp/page/uses.yaml")
handler_called = True
assert page_instructions.other_yaml == ["dummyapp/page/uses.yaml"]
assert page_instructions.uses_yaml == []
assert page_instructions.root_yaml == "dummyapp/page/sample.yaml"
request = get_request_fixture()
c = RequestContext(request, {"foo": "bar"})
pa = PageAssembly("dummyapp/page/sample.yaml", c)
pa.register_handler(handler)
# Make sure we can't get a dupe
pa.register_handler(handler)
assert len(BaseAssembly._page_assembly_handlers) == 1
content = pa.dumps()
assert handler_called
pa.unregister_all()
assert len(BaseAssembly._page_assembly_handlers) == 0
