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SCP-2372: Uniswap trace and scripts (#3370)
* SCP-2372: Uniswap trace and scripts
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nix/pkgs/haskell/materialized-unix/.plan.nix/plutus-use-cases.nix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| {-# LANGUAGE DataKinds #-} | ||
| {-# LANGUAGE LambdaCase #-} | ||
| {-# LANGUAGE OverloadedStrings #-} | ||
| {-# LANGUAGE TypeApplications #-} | ||
| {-| Example trace for the uniswap contract | ||
| -} | ||
| module Plutus.Contracts.Uniswap.Trace( | ||
| uniswapTrace | ||
| -- | ||
| , setupTokens | ||
| , tokenNames | ||
| , wallets | ||
| ) where | ||
|
|
||
| import Control.Monad (forM_, void, when) | ||
| import Control.Monad.Freer.Error (throwError) | ||
| import qualified Data.Map as Map | ||
| import qualified Data.Monoid as Monoid | ||
| import qualified Data.Semigroup as Semigroup | ||
| import Ledger | ||
| import Ledger.Ada (adaSymbol, adaToken) | ||
| import Ledger.Constraints | ||
| import Ledger.Value as Value | ||
| import Plutus.Contract hiding (throwError, when) | ||
| import qualified Plutus.Contracts.Currency as Currency | ||
| import Plutus.Contracts.Uniswap.OffChain as OffChain | ||
| import Plutus.Contracts.Uniswap.Types as Types | ||
| import Plutus.Trace.Emulator (EmulatorRuntimeError (GenericError), EmulatorTrace) | ||
| import qualified Plutus.Trace.Emulator as Emulator | ||
| import Wallet.Emulator.Types (Wallet (..), walletPubKey) | ||
|
|
||
| -- | Set up a liquidity pool and call the "add" endpoint | ||
| uniswapTrace :: EmulatorTrace () | ||
| uniswapTrace = do | ||
| cidInit <- Emulator.activateContract (Wallet 1) setupTokens "init" | ||
| _ <- Emulator.waitNSlots 5 | ||
| cs <- Emulator.observableState cidInit >>= \case | ||
| Just (Semigroup.Last cur) -> pure (Currency.currencySymbol cur) | ||
| _ -> throwError $ GenericError "failed to create currency" | ||
| let coins = Map.fromList [(tn, Types.mkCoin cs tn) | tn <- tokenNames] | ||
| ada = Types.mkCoin adaSymbol adaToken | ||
|
|
||
| cidStart <- Emulator.activateContract (Wallet 1) ownerEndpoint "start" | ||
| _ <- Emulator.waitNSlots 5 | ||
| us <- Emulator.observableState cidStart >>= \case | ||
| Monoid.Last (Just (Right v)) -> pure v | ||
| _ -> throwError $ GenericError "initialisation failed" | ||
| cid1 <- Emulator.activateContractWallet (Wallet 2) (userEndpoints us) | ||
| cid2 <- Emulator.activateContractWallet (Wallet 3) (userEndpoints us) | ||
| _ <- Emulator.waitNSlots 5 | ||
|
|
||
| let cp = OffChain.CreateParams ada (coins Map.! "A") 100000 500000 | ||
|
|
||
| Emulator.callEndpoint @"create" cid1 cp | ||
| _ <- Emulator.waitNSlots 5 | ||
|
|
||
| let ap = AddParams{apCoinA = ada, apCoinB = coins Map.! "A", apAmountA = 1000, apAmountB = 5000} | ||
| Emulator.callEndpoint @"add" cid2 ap | ||
| _ <- Emulator.waitNSlots 5 | ||
| pure () | ||
|
|
||
| -- | Create some sample tokens and distribute them to | ||
| -- the emulated wallets | ||
| setupTokens :: Contract (Maybe (Semigroup.Last Currency.OneShotCurrency)) Currency.CurrencySchema Currency.CurrencyError () | ||
| setupTokens = do | ||
| ownPK <- pubKeyHash <$> ownPubKey | ||
| cur <- Currency.forgeContract ownPK [(tn, fromIntegral (length wallets) * amount) | tn <- tokenNames] | ||
| let cs = Currency.currencySymbol cur | ||
| v = mconcat [Value.singleton cs tn amount | tn <- tokenNames] | ||
| forM_ wallets $ \w -> do | ||
| let pkh = pubKeyHash $ walletPubKey w | ||
| when (pkh /= ownPK) $ do | ||
| tx <- submitTx $ mustPayToPubKey pkh v | ||
| awaitTxConfirmed $ txId tx | ||
| tell $ Just $ Semigroup.Last cur | ||
| void $ waitNSlots 10 | ||
| where | ||
| amount = 1000000 | ||
|
|
||
| wallets :: [Wallet] | ||
| wallets = [Wallet i | i <- [1 .. 4]] | ||
|
|
||
| tokenNames :: [TokenName] | ||
| tokenNames = ["A", "B", "C", "D"] |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| {-# LANGUAGE OverloadedStrings #-} | ||
| module Spec.Uniswap( | ||
| tests | ||
| ) where | ||
|
|
||
| import Plutus.Contract.Test | ||
| import qualified Plutus.Contracts.Uniswap.Trace as Uniswap | ||
| import Test.Tasty | ||
|
|
||
| tests :: TestTree | ||
| tests = testGroup "uniswap" [ | ||
| checkPredicate "can create a liquidity pool and add liquidity" | ||
| assertNoFailedTransactions | ||
| Uniswap.uniswapTrace | ||
| ] |