When I return a list from an on-chain view am receiving a type error but am unsure where to set the type in order to fix it.
Returning a string or integer from the view works fine. Is there a set limit on the types that can be returned from on-chain views, or is there somewhere I should be explicitly declaring the return types?
I have included a link to a minimal contract on smartpy ide with issue reproduction, and include the code below for reference.
Example Contract:
class OnChainViewTestContract(sp.Contract):
def __init__(self, **kargs):
self.init(**kargs)
@sp.onchain_view()
def run_str_example(self):
sp.result(self.data.strExample)
@sp.onchain_view()
def run_int_example(self):
sp.result(self.data.intExample)
@sp.onchain_view()
def run_list_example(self):
sp.result(self.data.listExample)
The int and str examples work in the tests below, but the list example fails.
@sp.add_test(name = "OnChainViewReturnTypes")
def test():
scenario = sp.test_scenario()
scenario.h1("On-chain view return types test")
contract = OnChainViewTestContract(
strExample = 'some_string',
intExample = 2,
listExample = ['a', 'b', 'c']
)
scenario += contract
s = contract.run_str_example()
i = contract.run_int_example()
l = contract.run_list_example()
scenario.verify(s == 'some_string')
scenario.verify(i == 2)
scenario.verify(l == ['a', 'b', 'c'])
The resulting error:
Error: Type error (sp.contract_view(0, "run_list_example", sp.unit).open_some(message = 'View run_list_example is invalid!') : sp.TList(sp.TString)) doesn't have a comparable type
(__main__, line 36)
