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Implement bep3 evm native conversion logic (#1848)
* Implement bep3 evm native conversion logic * Update changelog * Fix indentation * Add bep3 conversion keeper tests * make DefaultBEP3ConversionDenoms private * refactor bep3 conversion * update bep3 tests to cover all bep3 assets * minor refactor
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@ -45,6 +45,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
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- (validator-vesting) [#1832] Add grpc query service to replace removed legacy querier
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- (incentive) [#1836] Update x/incentive cli to use grpc query client
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- (ibc) [#1839] Add ibc packet forward middleware for ibc transfers
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- (evmutil) [#1848] Update evm native conversion logic to handle bep3 assets
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## [v0.25.0]
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@ -328,6 +329,7 @@ the [changelog](https://github.com/cosmos/cosmos-sdk/blob/v0.38.4/CHANGELOG.md).
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large-scale simulations remotely using aws-batch
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[#1846]: https://github.com/Kava-Labs/kava/pull/1846
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[#1848]: https://github.com/Kava-Labs/kava/pull/1848
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[#1839]: https://github.com/Kava-Labs/kava/pull/1839
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[#1836]: https://github.com/Kava-Labs/kava/pull/1836
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[#1832]: https://github.com/Kava-Labs/kava/pull/1832
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@ -71,7 +71,15 @@ func (k Keeper) ConvertCoinToERC20(
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return err
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}
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if err := k.UnlockERC20Tokens(ctx, pair, coin.Amount.BigInt(), receiverAccount); err != nil {
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// handle bep3 conversion pair (8 decimals sdk.Coin -> 18 decimals erc20)
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// when converting bep3 bank coins to erc20, we will need to unlock the 18
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// decimals erc20 equivalent of the 8 decimals bep3 sdk.Coins
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amountToUnlock := coin.Amount.BigInt()
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if isBep3Asset(pair.Denom) {
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amountToUnlock = convertBep3CoinAmountToERC20Amount(coin.Amount.BigInt())
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}
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if err := k.UnlockERC20Tokens(ctx, pair, amountToUnlock, receiverAccount); err != nil {
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return err
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}
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@ -102,13 +110,23 @@ func (k Keeper) ConvertERC20ToCoin(
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return err
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}
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amountToLock := amount.BigInt()
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amountToMint := amount.BigInt()
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if isBep3Asset(pair.Denom) {
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amountToMint, amountToLock, err = bep3ERC20AmountToCoinMintAndERC20LockAmount(amount.BigInt())
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if err != nil {
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return err
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}
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}
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// lock erc20 tokens
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if err := k.LockERC20Tokens(ctx, pair, amount.BigInt(), initiator); err != nil {
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if err := k.LockERC20Tokens(ctx, pair, amountToLock, initiator); err != nil {
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return err
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}
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// mint conversion pair coin
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coin, err := k.MintConversionPairCoin(ctx, pair, amount.BigInt(), receiver)
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coin, err := k.MintConversionPairCoin(ctx, pair, amountToMint, receiver)
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if err != nil {
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return err
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}
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55
x/evmutil/keeper/conversion_evm_native_bep3.go
Normal file
55
x/evmutil/keeper/conversion_evm_native_bep3.go
Normal file
@ -0,0 +1,55 @@
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package keeper
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import (
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"math/big"
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errorsmod "cosmossdk.io/errors"
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"github.com/kava-labs/kava/x/evmutil/types"
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)
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var (
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bep3Denoms = map[string]bool{
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"bnb": true,
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"busd": true,
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"btcb": true,
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"xrpb": true,
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}
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bep3ConversionFactor = new(big.Int).Exp(big.NewInt(10), big.NewInt(10), nil)
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)
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func isBep3Asset(denom string) bool {
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return bep3Denoms[denom]
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}
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// convertBep3CoinAmountToERC20Amount converts a bep3 coin amount with 8 decimals
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// to the equivalent ERC20 token with 18 decimals.
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func convertBep3CoinAmountToERC20Amount(amount *big.Int) (erc20Amount *big.Int) {
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return new(big.Int).Mul(amount, bep3ConversionFactor)
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}
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// convertBep3ERC20AmountToCoinAmount converts a bep3 ERC20 token with 18 decimals
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// to the equivalent coin amount with 8 decimals, and dropping the remainder.
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func convertBep3ERC20AmountToCoinAmount(amount *big.Int) (coinAmount *big.Int) {
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return new(big.Int).Div(amount, bep3ConversionFactor)
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}
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// bep3ERC20AmountToCoinMintAndERC20LockAmount converts 18 decimals erc20 bep3
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// amount to the equivalent 8 decimals coin amount to mint, and the
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// 18 decimals erc20 bep3 amount to lock for the converted coin amount.
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func bep3ERC20AmountToCoinMintAndERC20LockAmount(amount *big.Int) (
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amountToMint *big.Int, amountToLock *big.Int, err error,
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) {
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amountToMint = convertBep3ERC20AmountToCoinAmount(amount)
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// make sure we have at least 1 sdk.Coin to mint
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if amountToMint.Cmp(big.NewInt(0)) == 0 {
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err := errorsmod.Wrapf(
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types.ErrInsufficientConversionAmount,
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"unable to convert bep3 coin due converting less than 1 native unit",
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)
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return nil, nil, err
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}
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amountToLock = convertBep3CoinAmountToERC20Amount(amountToMint)
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return amountToMint, amountToLock, nil
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}
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415
x/evmutil/keeper/conversion_evm_native_bep3_test.go
Normal file
415
x/evmutil/keeper/conversion_evm_native_bep3_test.go
Normal file
@ -0,0 +1,415 @@
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package keeper_test
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import (
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"fmt"
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"testing"
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sdkmath "cosmossdk.io/math"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/stretchr/testify/suite"
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"github.com/kava-labs/kava/x/evmutil/testutil"
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"github.com/kava-labs/kava/x/evmutil/types"
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)
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type Bep3ConversionTestSuite struct {
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testutil.Suite
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}
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var (
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bep3Denoms = []string{"bnb", "busd", "btcb", "xrpb"}
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)
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func TestBep3ConversionTestSuite(t *testing.T) {
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suite.Run(t, new(Bep3ConversionTestSuite))
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}
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func (suite *Bep3ConversionTestSuite) TestConvertCoinToERC20_Bep3() {
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for _, denom := range bep3Denoms {
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suite.testConvertBep3CoinToERC20(denom)
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}
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}
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func (suite *Bep3ConversionTestSuite) TestConvertERC20ToCoin_Bep3() {
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for _, denom := range bep3Denoms {
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suite.testConvertBep3ERC20ToCoin(denom)
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}
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}
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func (suite *Bep3ConversionTestSuite) setEnabledConversionPairDenom(denom string) {
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params := suite.Keeper.GetParams(suite.Ctx)
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params.EnabledConversionPairs[0].Denom = denom
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suite.Keeper.SetParams(suite.Ctx, params)
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}
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func (suite *Bep3ConversionTestSuite) testConvertBep3CoinToERC20(denom string) {
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invoker, err := sdk.AccAddressFromBech32("kava123fxg0l602etulhhcdm0vt7l57qya5wjcrwhzz")
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receiverAddr := testutil.MustNewInternalEVMAddressFromString("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2")
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suite.Require().NoError(err)
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type errArgs struct {
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expectPass bool
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contains string
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}
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tests := []struct {
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name string
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userBankBalance sdkmath.Int
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expUserErc20Balance sdkmath.Int
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moduleErc20Balance sdkmath.Int
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expModuleErc20Balance sdkmath.Int
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disablePair bool
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conversionDenom string
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coinToConvert sdk.Coin
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errArgs errArgs
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}{
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{
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name: "success",
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userBankBalance: sdkmath.NewInt(1_234),
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moduleErc20Balance: sdkmath.NewInt(10e13),
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expUserErc20Balance: sdkmath.NewInt(1.234e13),
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expModuleErc20Balance: sdkmath.NewInt(8.766e13),
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(1_234)),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "success - convert smallest unit",
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userBankBalance: sdkmath.NewInt(2),
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moduleErc20Balance: sdkmath.NewInt(10e13),
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expUserErc20Balance: sdkmath.NewInt(1e10),
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expModuleErc20Balance: sdkmath.NewInt(9.999e13),
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(1)),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "success - no change when 0 amount converted",
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userBankBalance: sdkmath.NewInt(1234),
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moduleErc20Balance: sdkmath.NewInt(1e14),
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expUserErc20Balance: sdkmath.ZeroInt(),
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expModuleErc20Balance: sdkmath.NewInt(1e14),
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(0)),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "error - bep3 not enabled",
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userBankBalance: sdkmath.NewInt(1_234),
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moduleErc20Balance: sdkmath.NewInt(1e14),
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disablePair: true,
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(1_234)),
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errArgs: errArgs{
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expectPass: false,
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contains: fmt.Sprintf("%s: ERC20 token not enabled to convert to sdk.Coin", denom),
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},
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},
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{
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name: "error - module account does not have enough balance to unlock",
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userBankBalance: sdkmath.NewInt(1_234),
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moduleErc20Balance: sdkmath.NewInt(1e9),
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(1)),
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errArgs: errArgs{
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expectPass: false,
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contains: "execution reverted: ERC20: transfer amount exceeds balance",
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},
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},
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{
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name: "success - not bep3 conversion",
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conversionDenom: "hard",
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userBankBalance: sdkmath.NewInt(1_234),
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moduleErc20Balance: sdkmath.NewInt(2_000),
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expUserErc20Balance: sdkmath.NewInt(1_234),
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expModuleErc20Balance: sdkmath.NewInt(766),
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coinToConvert: sdk.NewCoin("hard", sdkmath.NewInt(1_234)),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "error - user converting more than user balance",
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userBankBalance: sdkmath.NewInt(1_234),
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moduleErc20Balance: sdkmath.NewInt(1e14),
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coinToConvert: sdk.NewCoin(denom, sdkmath.NewInt(20_000)),
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errArgs: errArgs{
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expectPass: false,
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contains: fmt.Sprintf("spendable balance 1234%s is smaller than 20000%s: insufficient funds", denom, denom),
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},
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},
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}
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for _, tc := range tests {
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suite.Run(fmt.Sprintf("%s: %s", denom, tc.name), func() {
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suite.SetupTest()
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contractAddr := suite.DeployERC20()
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// override conversion denom if needed
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conversionDenom := tc.conversionDenom
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if conversionDenom == "" {
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conversionDenom = denom
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}
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if !tc.disablePair {
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suite.setEnabledConversionPairDenom(conversionDenom)
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}
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pair := types.NewConversionPair(
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contractAddr,
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conversionDenom,
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)
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// fund user & module account
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if tc.userBankBalance.GT(sdkmath.ZeroInt()) {
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err = suite.App.FundAccount(
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suite.Ctx,
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invoker,
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sdk.NewCoins(sdk.NewCoin(conversionDenom, tc.userBankBalance)),
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)
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suite.Require().NoError(err)
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}
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if tc.moduleErc20Balance.GT(sdkmath.ZeroInt()) {
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err := suite.Keeper.MintERC20(
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suite.Ctx,
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pair.GetAddress(), // contractAddr
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types.NewInternalEVMAddress(types.ModuleEVMAddress), //receiver
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tc.moduleErc20Balance.BigInt(),
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)
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suite.Require().NoError(err)
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}
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// execute bep3 conversion
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err := suite.Keeper.ConvertCoinToERC20(suite.Ctx, invoker, receiverAddr, tc.coinToConvert)
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if tc.errArgs.expectPass {
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suite.Require().NoError(err)
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// validate user balance
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bal := suite.GetERC20BalanceOf(
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types.ERC20MintableBurnableContract.ABI,
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pair.GetAddress(),
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receiverAddr,
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)
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suite.Require().Equal(
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tc.expUserErc20Balance.BigInt().Int64(),
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bal.Int64(),
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"user erc20 balance should match expected amount",
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)
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// validate module balance
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bal = suite.GetERC20BalanceOf(
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types.ERC20MintableBurnableContract.ABI,
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pair.GetAddress(),
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types.NewInternalEVMAddress(types.ModuleEVMAddress),
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)
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suite.Require().Equal(
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tc.expModuleErc20Balance.BigInt().Int64(),
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bal.Int64(),
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"module erc20 balance should match expected amount",
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)
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// keeper event
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suite.EventsContains(suite.GetEvents(),
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sdk.NewEvent(
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types.EventTypeConvertCoinToERC20,
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sdk.NewAttribute(types.AttributeKeyInitiator, invoker.String()),
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sdk.NewAttribute(types.AttributeKeyReceiver, receiverAddr.String()),
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sdk.NewAttribute(types.AttributeKeyERC20Address, pair.GetAddress().String()),
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sdk.NewAttribute(types.AttributeKeyAmount, tc.coinToConvert.String()),
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))
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} else {
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suite.Require().Error(err)
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suite.Require().Contains(err.Error(), tc.errArgs.contains)
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}
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})
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}
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}
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func (suite *Bep3ConversionTestSuite) testConvertBep3ERC20ToCoin(denom string) {
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invoker := testutil.MustNewInternalEVMAddressFromString("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2")
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invokerCosmosAddr, err := sdk.AccAddressFromHexUnsafe(invoker.String()[2:])
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suite.Require().NoError(err)
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type errArgs struct {
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expectPass bool
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contains string
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}
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tests := []struct {
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name string
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contractAddr string
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conversionDenom string
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disablePair bool
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userErc20Balance sdkmath.Int
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expUserBankBalance sdkmath.Int
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expUserErc20Balance sdkmath.Int
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convertAmount sdkmath.Int
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errArgs errArgs
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}{
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{
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name: "success - conversion with no dust",
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userErc20Balance: sdkmath.NewInt(1.12e18),
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expUserBankBalance: sdkmath.NewInt(1.0031e8),
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expUserErc20Balance: sdkmath.NewInt(0.1169e18),
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convertAmount: sdkmath.NewInt(1.0031e18),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "success - convert smallest bank unit",
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userErc20Balance: sdkmath.NewInt(2e18),
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expUserBankBalance: sdkmath.NewInt(1),
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expUserErc20Balance: sdkmath.NewInt(1.99999999e18),
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convertAmount: sdkmath.NewInt(1.12e10),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "success - bnb conversion with dust",
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userErc20Balance: sdkmath.NewInt(2e18),
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expUserBankBalance: sdkmath.NewInt(12),
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expUserErc20Balance: sdkmath.NewInt(1.99999988e18),
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convertAmount: sdkmath.NewInt(12.123e10),
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errArgs: errArgs{
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expectPass: true,
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},
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},
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{
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name: "fail - converting less than 1 bank unit",
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userErc20Balance: sdkmath.NewInt(2e18),
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convertAmount: sdkmath.NewInt(12e8),
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errArgs: errArgs{
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expectPass: false,
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contains: "unable to convert bep3 coin due converting less than 1 native unit",
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},
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},
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{
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name: "fail - contract not enabled",
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disablePair: true,
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contractAddr: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
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userErc20Balance: sdkmath.NewInt(2e18),
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convertAmount: sdkmath.NewInt(2e18),
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errArgs: errArgs{
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expectPass: false,
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contains: "ERC20 token not enabled to convert",
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},
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},
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{
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name: "fail - converting 0 amount of bep3 erc20 token",
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userErc20Balance: sdkmath.NewInt(2e18),
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convertAmount: sdkmath.NewInt(0),
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errArgs: errArgs{
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expectPass: false,
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contains: "unable to convert bep3 coin due converting less than 1 native unit",
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},
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},
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{
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name: "success - not bep3 conversion",
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conversionDenom: "xrp",
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userErc20Balance: sdkmath.NewInt(2.5e18),
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||||
expUserBankBalance: sdkmath.NewInt(2.1e18),
|
||||
expUserErc20Balance: sdkmath.NewInt(0.4e18),
|
||||
convertAmount: sdkmath.NewInt(2.1e18),
|
||||
errArgs: errArgs{
|
||||
expectPass: true,
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "fail - user converting more than user balance",
|
||||
userErc20Balance: sdkmath.NewInt(2e18),
|
||||
convertAmount: sdkmath.NewInt(2.3e18),
|
||||
errArgs: errArgs{
|
||||
expectPass: false,
|
||||
contains: "transfer amount exceeds balance",
|
||||
},
|
||||
},
|
||||
{
|
||||
name: "success - user converting more than balance but only by dust amount",
|
||||
userErc20Balance: sdkmath.NewInt(2e18),
|
||||
expUserBankBalance: sdkmath.NewInt(2e8),
|
||||
expUserErc20Balance: sdkmath.NewInt(0),
|
||||
convertAmount: sdkmath.NewInt(2.0000000091e18),
|
||||
errArgs: errArgs{
|
||||
expectPass: true,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tc := range tests {
|
||||
suite.Run(fmt.Sprintf("%s: %s", denom, tc.name), func() {
|
||||
suite.SetupTest()
|
||||
contractAddr := suite.DeployERC20()
|
||||
|
||||
// override conversion denom if needed
|
||||
conversionDenom := tc.conversionDenom
|
||||
if conversionDenom == "" {
|
||||
conversionDenom = denom
|
||||
}
|
||||
|
||||
if !tc.disablePair {
|
||||
suite.setEnabledConversionPairDenom(conversionDenom)
|
||||
}
|
||||
|
||||
if tc.contractAddr != "" {
|
||||
contractAddr = testutil.MustNewInternalEVMAddressFromString(tc.contractAddr)
|
||||
}
|
||||
|
||||
pair := types.NewConversionPair(
|
||||
contractAddr,
|
||||
conversionDenom,
|
||||
)
|
||||
|
||||
// fund user erc20 balance
|
||||
if tc.userErc20Balance.GT(sdkmath.ZeroInt()) {
|
||||
err := suite.Keeper.MintERC20(
|
||||
suite.Ctx,
|
||||
pair.GetAddress(),
|
||||
invoker,
|
||||
tc.userErc20Balance.BigInt(),
|
||||
)
|
||||
suite.Require().NoError(err)
|
||||
}
|
||||
|
||||
// create user account, otherwise `CallEVMWithData` will fail due to failing to get user account when finding its sequence.
|
||||
err = suite.App.FundAccount(suite.Ctx, invokerCosmosAddr, sdk.NewCoins(sdk.NewCoin(conversionDenom, sdk.ZeroInt())))
|
||||
suite.Require().NoError(err)
|
||||
|
||||
// execute bep3 conversion
|
||||
err := suite.Keeper.ConvertERC20ToCoin(suite.Ctx, invoker, invokerCosmosAddr, pair.GetAddress(), tc.convertAmount)
|
||||
|
||||
if tc.errArgs.expectPass {
|
||||
suite.Require().NoError(err)
|
||||
|
||||
// validate user balance after conversion
|
||||
bal := suite.GetERC20BalanceOf(
|
||||
types.ERC20MintableBurnableContract.ABI,
|
||||
pair.GetAddress(),
|
||||
testutil.MustNewInternalEVMAddressFromString(invoker.String()),
|
||||
)
|
||||
suite.Require().Equal(tc.expUserErc20Balance.BigInt().Int64(), bal.Int64(), "user erc20 balance is invalid")
|
||||
|
||||
// validate user coin balance
|
||||
coinBal := suite.App.GetBankKeeper().GetBalance(suite.Ctx, invokerCosmosAddr, pair.Denom)
|
||||
suite.Require().Equal(tc.expUserBankBalance, coinBal.Amount, "user coin balance is invalid")
|
||||
|
||||
// keeper event
|
||||
suite.EventsContains(suite.GetEvents(),
|
||||
sdk.NewEvent(
|
||||
types.EventTypeConvertERC20ToCoin,
|
||||
sdk.NewAttribute(types.AttributeKeyERC20Address, pair.GetAddress().String()),
|
||||
sdk.NewAttribute(types.AttributeKeyInitiator, invoker.String()),
|
||||
sdk.NewAttribute(types.AttributeKeyReceiver, invokerCosmosAddr.String()),
|
||||
sdk.NewAttribute(types.AttributeKeyAmount, sdk.NewCoin(pair.Denom, tc.expUserBankBalance).String()),
|
||||
))
|
||||
} else {
|
||||
suite.Require().Error(err)
|
||||
suite.Require().Contains(err.Error(), tc.errArgs.contains)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
@ -4,11 +4,12 @@ import errorsmod "cosmossdk.io/errors"
|
||||
|
||||
// errors
|
||||
var (
|
||||
ErrABIPack = errorsmod.Register(ModuleName, 2, "contract ABI pack failed")
|
||||
ErrEVMCall = errorsmod.Register(ModuleName, 3, "EVM call unexpected error")
|
||||
ErrEVMConversionNotEnabled = errorsmod.Register(ModuleName, 4, "ERC20 token not enabled to convert to sdk.Coin")
|
||||
ErrBalanceInvariance = errorsmod.Register(ModuleName, 5, "post EVM transfer balance invariant failed")
|
||||
ErrUnexpectedContractEvent = errorsmod.Register(ModuleName, 6, "unexpected contract event")
|
||||
ErrInvalidCosmosDenom = errorsmod.Register(ModuleName, 7, "invalid cosmos denom")
|
||||
ErrSDKConversionNotEnabled = errorsmod.Register(ModuleName, 8, "sdk.Coin not enabled to convert to ERC20 token")
|
||||
ErrABIPack = errorsmod.Register(ModuleName, 2, "contract ABI pack failed")
|
||||
ErrEVMCall = errorsmod.Register(ModuleName, 3, "EVM call unexpected error")
|
||||
ErrEVMConversionNotEnabled = errorsmod.Register(ModuleName, 4, "ERC20 token not enabled to convert to sdk.Coin")
|
||||
ErrBalanceInvariance = errorsmod.Register(ModuleName, 5, "post EVM transfer balance invariant failed")
|
||||
ErrUnexpectedContractEvent = errorsmod.Register(ModuleName, 6, "unexpected contract event")
|
||||
ErrInvalidCosmosDenom = errorsmod.Register(ModuleName, 7, "invalid cosmos denom")
|
||||
ErrSDKConversionNotEnabled = errorsmod.Register(ModuleName, 8, "sdk.Coin not enabled to convert to ERC20 token")
|
||||
ErrInsufficientConversionAmount = errorsmod.Register(ModuleName, 9, "insufficient conversion amount")
|
||||
)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user