Offchain views and signatures
Offchain views
Another way to deal with offchain with is to use
TZComet. :::
To deal with offchain views in scenario, you can create a contract with a method that takes the storage of the platform and the offchain view params as an argument and reproduce the offchain view computation.
Example:
python
import smartpy as sp
gp = sp.io.import_template("state_channel_games/game_platform.py")
class TestView(sp.Contract):
def __init__(self, c, f):
self.c = c
self.f = f.f
self.init(result = sp.none)
@sp.entrypoint
def compute(self, data, params):
self.c.data = data
b = sp.bind_block()
with b:
self.f(self.c, params)
self.data.result = sp.some(b.value)
if "templates" not in __name__:
sc = sp.test_scenario()
sc.table_of_contents()
platform_addr = sp.address("KT1V8pmoHLq6obLb3q7D6XfordUA5G1K7xkb")
c1 = gp.GamePlatform(admins = sp.set([admin.address]), self_addr = platform_addr)
c1.address = platform_addr
sc.h2("Offchain new_game")
offchain_new_game = TestView(c1, c1.offchain_new_game)
sc += offchain_new_game
sc.h2("Offchain play")
offchain_play = TestView(c1, c1.offchain_play)
sc += offchain_play
constants = #...
new_game_signatures = # ...
offchain_new_game.compute(sp.record(data = c1.data, params = sp.record(constants = constants, params = sp.pack(sp.unit), signatures = new_game_signatures))).run(sender = player1.address)
game = sc.compute(offchain_new_game.data.result.open_some())Signatures
All signatures can be done in scenario by putting the secret key of the signer.
That's useful for tests.
A complete example is available here: https://legacy.smartpy.io/ide?template=state_channel_games/tests/test_game_platform_testnet.py