/
gamm.go
300 lines (252 loc) · 10.3 KB
/
gamm.go
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package apptesting
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/osmosis-labs/osmosis/osmomath"
gammkeeper "github.com/tessornetwork/mokita/x/gamm/keeper"
"github.com/tessornetwork/mokita/x/gamm/pool-models/balancer"
"github.com/tessornetwork/mokita/x/gamm/pool-models/stableswap"
gammtypes "github.com/tessornetwork/mokita/x/gamm/types"
)
var DefaultAcctFunds sdk.Coins = sdk.NewCoins(
sdk.NewCoin("umoki", sdk.NewInt(10000000000)),
sdk.NewCoin("foo", sdk.NewInt(10000000)),
sdk.NewCoin("bar", sdk.NewInt(10000000)),
sdk.NewCoin("baz", sdk.NewInt(10000000)),
)
var DefaultPoolAssets = []balancer.PoolAsset{
{
Weight: sdk.NewInt(100),
Token: sdk.NewCoin("foo", sdk.NewInt(5000000)),
},
{
Weight: sdk.NewInt(200),
Token: sdk.NewCoin("bar", sdk.NewInt(5000000)),
},
{
Weight: sdk.NewInt(300),
Token: sdk.NewCoin("baz", sdk.NewInt(5000000)),
},
{
Weight: sdk.NewInt(400),
Token: sdk.NewCoin("umoki", sdk.NewInt(5000000)),
},
}
var DefaultStableswapLiquidity = sdk.NewCoins(
sdk.NewCoin("foo", sdk.NewInt(10000000)),
sdk.NewCoin("bar", sdk.NewInt(10000000)),
sdk.NewCoin("baz", sdk.NewInt(10000000)),
)
var ImbalancedStableswapLiquidity = sdk.NewCoins(
sdk.NewCoin("foo", sdk.NewInt(10_000_000_000)),
sdk.NewCoin("bar", sdk.NewInt(20_000_000_000)),
sdk.NewCoin("baz", sdk.NewInt(30_000_000_000)),
)
// PrepareBalancerPoolWithCoins returns a balancer pool
// consisted of given coins with equal weight.
func (s *KeeperTestHelper) PrepareBalancerPoolWithCoins(coins ...sdk.Coin) uint64 {
weights := make([]int64, len(coins))
for i := 0; i < len(coins); i++ {
weights[i] = 1
}
return s.PrepareBalancerPoolWithCoinsAndWeights(coins, weights)
}
// PrepareBalancerPoolWithCoins returns a balancer pool
// PrepareBalancerPoolWithCoinsAndWeights returns a balancer pool
// consisted of given coins with the specified weights.
func (s *KeeperTestHelper) PrepareBalancerPoolWithCoinsAndWeights(coins sdk.Coins, weights []int64) uint64 {
var poolAssets []balancer.PoolAsset
for i, coin := range coins {
poolAsset := balancer.PoolAsset{
Weight: sdk.NewInt(weights[i]),
Token: coin,
}
poolAssets = append(poolAssets, poolAsset)
}
return s.PrepareCustomBalancerPool(poolAssets, balancer.PoolParams{
SwapFee: sdk.ZeroDec(),
ExitFee: sdk.ZeroDec(),
})
}
// PrepareBalancerPool returns a Balancer pool's pool-ID with pool params set in PrepareBalancerPoolWithPoolParams.
func (s *KeeperTestHelper) PrepareBalancerPool() uint64 {
poolId := s.PrepareBalancerPoolWithPoolParams(balancer.PoolParams{
SwapFee: sdk.NewDec(0),
ExitFee: sdk.NewDec(0),
})
spotPrice, err := s.App.GAMMKeeper.CalculateSpotPrice(s.Ctx, poolId, "foo", "bar")
s.NoError(err)
s.Equal(sdk.NewDec(2).String(), spotPrice.String())
spotPrice, err = s.App.GAMMKeeper.CalculateSpotPrice(s.Ctx, poolId, "bar", "baz")
s.NoError(err)
s.Equal(sdk.NewDecWithPrec(15, 1).String(), spotPrice.String())
spotPrice, err = s.App.GAMMKeeper.CalculateSpotPrice(s.Ctx, poolId, "baz", "foo")
s.NoError(err)
oneThird := sdk.NewDec(1).Quo(sdk.NewDec(3))
sp := oneThird.MulInt(gammtypes.SpotPriceSigFigs).RoundInt().ToDec().QuoInt(gammtypes.SpotPriceSigFigs)
s.Equal(sp.String(), spotPrice.String())
return poolId
}
func (s *KeeperTestHelper) PrepareBasicStableswapPool() uint64 {
// Mint some assets to the account.
s.FundAcc(s.TestAccs[0], DefaultAcctFunds)
params := stableswap.PoolParams{
SwapFee: sdk.NewDec(0),
ExitFee: sdk.NewDec(0),
}
msg := stableswap.NewMsgCreateStableswapPool(s.TestAccs[0], params, DefaultStableswapLiquidity, []uint64{}, "")
poolId, err := s.App.GAMMKeeper.CreatePool(s.Ctx, msg)
s.NoError(err)
return poolId
}
func (s *KeeperTestHelper) PrepareImbalancedStableswapPool() uint64 {
// Mint some assets to the account.
s.FundAcc(s.TestAccs[0], ImbalancedStableswapLiquidity)
params := stableswap.PoolParams{
SwapFee: sdk.NewDec(0),
ExitFee: sdk.NewDec(0),
}
msg := stableswap.NewMsgCreateStableswapPool(s.TestAccs[0], params, ImbalancedStableswapLiquidity, []uint64{1, 1, 1}, "")
poolId, err := s.App.GAMMKeeper.CreatePool(s.Ctx, msg)
s.NoError(err)
return poolId
}
// PrepareBalancerPoolWithPoolParams sets up a Balancer pool with poolParams.
func (s *KeeperTestHelper) PrepareBalancerPoolWithPoolParams(poolParams balancer.PoolParams) uint64 {
s.FundAcc(s.TestAccs[0], DefaultAcctFunds)
return s.PrepareCustomBalancerPool(DefaultPoolAssets, poolParams)
}
// PrepareCustomBalancerPool sets up a Balancer pool with an array of assets and given parameters
func (s *KeeperTestHelper) PrepareCustomBalancerPool(assets []balancer.PoolAsset, params balancer.PoolParams) uint64 {
// Add coins for pool creation fee + coins needed to mint balances
fundCoins := sdk.NewCoins(sdk.NewCoin("umoki", sdk.NewInt(10000000000)))
for _, a := range assets {
fundCoins = fundCoins.Add(a.Token)
}
s.FundAcc(s.TestAccs[0], fundCoins)
msg := balancer.NewMsgCreateBalancerPool(s.TestAccs[0], params, assets, "")
poolId, err := s.App.GAMMKeeper.CreatePool(s.Ctx, msg)
s.NoError(err)
return poolId
}
// PrepareCustomBalancerPoolFromCoins sets up a Balancer pool with an array of coins and given parameters
// The coins are converted to pool assets where each asset has a weight of 1.
func (s *KeeperTestHelper) PrepareCustomBalancerPoolFromCoins(coins sdk.Coins, params balancer.PoolParams) uint64 {
var poolAssets []balancer.PoolAsset
for _, coin := range coins {
poolAsset := balancer.PoolAsset{
Weight: sdk.NewInt(1),
Token: coin,
}
poolAssets = append(poolAssets, poolAsset)
}
return s.PrepareCustomBalancerPool(poolAssets, params)
}
// Modify spotprice of a pool to target spotprice
func (s *KeeperTestHelper) ModifySpotPrice(poolID uint64, targetSpotPrice sdk.Dec, baseDenom string) {
var quoteDenom string
var int64Max = int64(^uint64(0) >> 1)
s.Require().Positive(targetSpotPrice)
s.Require().Greater(gammtypes.MaxSpotPrice, targetSpotPrice)
pool, _ := s.App.GAMMKeeper.GetPoolAndPoke(s.Ctx, poolID)
denoms, err := s.App.GAMMKeeper.GetPoolDenoms(s.Ctx, poolID)
s.Require().NoError(err)
if denoms[0] == baseDenom {
quoteDenom = denoms[1]
} else {
quoteDenom = denoms[0]
}
amountTrade := s.CalcAmoutOfTokenToGetTargetPrice(s.Ctx, pool, targetSpotPrice, baseDenom, quoteDenom)
if amountTrade.IsPositive() {
swapIn := sdk.NewCoins(sdk.NewCoin(quoteDenom, sdk.NewInt(amountTrade.RoundInt64())))
s.FundAcc(s.TestAccs[0], swapIn)
msg := gammtypes.MsgSwapExactAmountIn{
Sender: s.TestAccs[0].String(),
Routes: []gammtypes.SwapAmountInRoute{{PoolId: poolID, TokenOutDenom: baseDenom}},
TokenIn: swapIn[0],
TokenOutMinAmount: sdk.ZeroInt(),
}
gammMsgServer := gammkeeper.NewMsgServerImpl(s.App.GAMMKeeper)
_, err = gammMsgServer.SwapExactAmountIn(sdk.WrapSDKContext(s.Ctx), &msg)
s.Require().NoError(err)
} else {
swapOut := sdk.NewCoins(sdk.NewCoin(quoteDenom, sdk.NewInt(amountTrade.RoundInt64()).Abs()))
swapFee := pool.GetSwapFee(s.Ctx)
tokenIn, err := pool.CalcInAmtGivenOut(s.Ctx, swapOut, baseDenom, swapFee)
s.Require().NoError(err)
s.FundAcc(s.TestAccs[0], sdk.NewCoins(tokenIn))
msg := gammtypes.MsgSwapExactAmountOut{
Sender: s.TestAccs[0].String(),
Routes: []gammtypes.SwapAmountOutRoute{{PoolId: poolID, TokenInDenom: baseDenom}},
TokenInMaxAmount: sdk.NewInt(int64Max),
TokenOut: swapOut[0],
}
gammMsgServer := gammkeeper.NewMsgServerImpl(s.App.GAMMKeeper)
_, err = gammMsgServer.SwapExactAmountOut(sdk.WrapSDKContext(s.Ctx), &msg)
s.Require().NoError(err)
}
}
func (s *KeeperTestHelper) RunBasicSwap(poolId uint64) {
denoms, err := s.App.GAMMKeeper.GetPoolDenoms(s.Ctx, poolId)
s.Require().NoError(err)
swapIn := sdk.NewCoins(sdk.NewCoin(denoms[0], sdk.NewInt(1000)))
s.FundAcc(s.TestAccs[0], swapIn)
msg := gammtypes.MsgSwapExactAmountIn{
Sender: s.TestAccs[0].String(),
Routes: []gammtypes.SwapAmountInRoute{{PoolId: poolId, TokenOutDenom: denoms[1]}},
TokenIn: swapIn[0],
TokenOutMinAmount: sdk.ZeroInt(),
}
gammMsgServer := gammkeeper.NewMsgServerImpl(s.App.GAMMKeeper)
_, err = gammMsgServer.SwapExactAmountIn(sdk.WrapSDKContext(s.Ctx), &msg)
s.Require().NoError(err)
}
func (s *KeeperTestHelper) RunBasicExit(poolId uint64) {
shareInAmount := sdk.NewInt(100)
tokenOutMins := sdk.NewCoins()
msg := gammtypes.MsgExitPool{
Sender: s.TestAccs[0].String(),
PoolId: poolId,
ShareInAmount: shareInAmount,
TokenOutMins: tokenOutMins,
}
gammMsgServer := gammkeeper.NewMsgServerImpl(s.App.GAMMKeeper)
_, err := gammMsgServer.ExitPool(sdk.WrapSDKContext(s.Ctx), &msg)
s.Require().NoError(err)
}
func (s *KeeperTestHelper) RunBasicJoin(poolId uint64) {
pool, _ := s.App.GAMMKeeper.GetPoolAndPoke(s.Ctx, poolId)
denoms, err := s.App.GAMMKeeper.GetPoolDenoms(s.Ctx, poolId)
s.Require().NoError(err)
tokenIn := sdk.NewCoins()
for _, denom := range denoms {
tokenIn = tokenIn.Add(sdk.NewCoin(denom, sdk.NewInt(10000000)))
}
s.FundAcc(s.TestAccs[0], sdk.NewCoins(tokenIn...))
totalPoolShare := pool.GetTotalShares()
msg := gammtypes.MsgJoinPool{
Sender: s.TestAccs[0].String(),
PoolId: poolId,
ShareOutAmount: totalPoolShare.Quo(sdk.NewInt(100000)),
TokenInMaxs: tokenIn,
}
gammMsgServer := gammkeeper.NewMsgServerImpl(s.App.GAMMKeeper)
_, err = gammMsgServer.JoinPool(sdk.WrapSDKContext(s.Ctx), &msg)
s.Require().NoError(err)
}
func (s *KeeperTestHelper) CalcAmoutOfTokenToGetTargetPrice(ctx sdk.Context, pool gammtypes.PoolI, targetSpotPrice sdk.Dec, baseDenom, quoteDenom string) (amountTrade sdk.Dec) {
blPool, ok := pool.(*balancer.Pool)
s.Require().True(ok)
quoteAsset, _ := blPool.GetPoolAsset(quoteDenom)
baseAsset, err := blPool.GetPoolAsset(baseDenom)
s.Require().NoError(err)
s.Require().NotEqual(baseAsset.Weight, sdk.ZeroInt())
s.Require().NotEqual(quoteAsset.Weight, sdk.ZeroInt())
spotPriceNow, err := blPool.SpotPrice(ctx, baseDenom, quoteDenom)
s.Require().NoError(err)
// Amount of quote token need to trade to get target spot price
// AmoutQuoteTokenNeedToTrade = AmoutQuoTokenNow * ((targetSpotPrice/spotPriceNow)^((weight_base/(weight_base + weight_quote))) -1 )
ratioPrice := targetSpotPrice.Quo(spotPriceNow)
ratioWeight := (baseAsset.Weight.ToDec()).Quo(baseAsset.Weight.ToDec().Add(quoteAsset.Weight.ToDec()))
amountTrade = quoteAsset.Token.Amount.ToDec().Mul(osmomath.Pow(ratioPrice, ratioWeight).Sub(sdk.OneDec()))
return amountTrade
}