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fee_test.go
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package ante_test
import (
"strings"
"cosmossdk.io/math"
cheqdante "github.com/cheqd/cheqd-node/ante"
cheqdpost "github.com/cheqd/cheqd-node/post"
didtypes "github.com/cheqd/cheqd-node/x/did/types"
cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
"github.com/cosmos/cosmos-sdk/testutil/testdata"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/types/query"
"github.com/cosmos/cosmos-sdk/x/auth/ante"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
"github.com/cosmos/cosmos-sdk/x/bank/testutil"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
feeabsante "github.com/osmosis-labs/fee-abstraction/v8/x/feeabs/ante"
"github.com/osmosis-labs/fee-abstraction/v8/x/feeabs/types"
feemarketante "github.com/skip-mev/feemarket/x/feemarket/ante"
feemarkettypes "github.com/skip-mev/feemarket/x/feemarket/types"
)
var _ = Describe("Fee tests on CheckTx", func() {
s := new(AnteTestSuite)
var decorators []sdk.AnteDecorator
BeforeEach(func() {
err := s.SetupTest(true) // setup
Expect(err).To(BeNil(), "Error on creating test app")
s.txBuilder = s.clientCtx.TxConfig.NewTxBuilder()
decorators = []sdk.AnteDecorator{
feemarketante.NewFeeMarketCheckDecorator( // fee market check replaces fee deduct decorator
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
s.app.FeeMarketKeeper,
ante.NewDeductFeeDecorator(
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
nil,
),
),
}
})
It("Ensure Zero Mempool Fees On Simulation", func() {
mfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(mfd)
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(300000000000)))
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil())
// msg and signatures
msg := testdata.NewTestMsg(addr1)
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
// set zero gas
s.txBuilder.SetGasLimit(0)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// Set IsCheckTx to true
s.ctx = s.ctx.WithIsCheckTx(true)
_, err = antehandler(s.ctx, tx, false)
Expect(err).NotTo(BeNil())
// zero gas is accepted in simulation mode
_, err = antehandler(s.ctx, tx, true)
Expect(err).To(BeNil())
})
It("Ensure Mempool Fees", func() {
mfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(mfd)
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(300_000_000_000)))
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil())
// msg and signatures
msg := testdata.NewTestMsg(addr1)
feeAmount := NewTestFeeAmount()
gasLimit := uint64(15)
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// Set high gas price so standard test fee fails
ncheqPrice := sdk.NewDecCoinFromDec(didtypes.BaseMinimalDenom, math.LegacyNewDec(200_000_000_000))
params, err := s.app.FeeMarketKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// Since we use the BaseGasPrice set by the feemarket
// Set high gas price in feemarket
params.MinBaseGasPrice = ncheqPrice.Amount
err = s.app.FeeMarketKeeper.SetParams(s.ctx, params)
Expect(err).To(BeNil())
state := feemarkettypes.DefaultState()
state.BaseGasPrice = ncheqPrice.Amount
err = s.app.FeeMarketKeeper.SetState(s.ctx, feemarkettypes.NewState(
state.Index,
state.BaseGasPrice,
state.LearningRate,
))
Expect(err).To(BeNil())
params, err = s.app.FeeMarketKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// Set IsCheckTx to true
s.ctx = s.ctx.WithIsCheckTx(true)
// antehandler errors with insufficient fees
_, err = antehandler(s.ctx, tx, false)
Expect(err).NotTo(BeNil(), "Decorator should have errored on too low fee for local gasPrice")
// antehandler should not error since we do not check minGasPrice in simulation mode
params, err = s.app.FeeMarketKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// Set high gas price in feemarket
params.Enabled = false
err = s.app.FeeMarketKeeper.SetParams(s.ctx, params)
Expect(err).To(BeNil())
cacheCtx, _ := s.ctx.CacheContext()
_, err = antehandler(cacheCtx, tx, true)
Expect(err).To(BeNil(), "Decorator should not have errored in simulation mode")
// Set IsCheckTx to false
s.ctx = s.ctx.WithIsCheckTx(false)
// antehandler should not error since we do not check minGasPrice in DeliverTx
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "MempoolFeeDecorator returned error in DeliverTx")
// Set IsCheckTx back to true for testing sufficient mempool fee
s.ctx = s.ctx.WithIsCheckTx(true)
ncheqPrice = sdk.NewDecCoinFromDec(didtypes.BaseMinimalDenom, math.LegacyNewDec(0).Quo(math.LegacyNewDec(didtypes.BaseFactor)))
lowGasPrice := []sdk.DecCoin{ncheqPrice}
s.ctx = s.ctx.WithMinGasPrices(lowGasPrice) // 1 ncheq
newCtx, err := antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Decorator should not have errored on fee higher than local gasPrice")
// Priority is the smallest gas price amount in any denom. Since we have only 1 gas price
// of 10000000000ncheq, the priority here is 10*10^9.
Expect(int64(10) * didtypes.BaseFactor).To(Equal(newCtx.Priority()))
})
It("TaxableTx Mempool Inclusion", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := SandboxDidDoc()
feeAmount := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(5_000_000_000)))
gasLimit := testdata.NewTestGasLimit()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(100_000_000_000))))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when taxable on checkTx")
// set checkTx to false
s.ctx = s.ctx.WithIsCheckTx(false)
// antehandler should not error to replay in mempool or deliverTx
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when taxable on deliverTx")
})
})
var _ = Describe("Fee tests on DeliverTx", func() {
s := new(AnteTestSuite)
var decorators []sdk.AnteDecorator
BeforeEach(func() {
err := s.SetupTest(false) // setup
Expect(err).To(BeNil(), "Error on creating test app")
s.txBuilder = s.clientCtx.TxConfig.NewTxBuilder()
decorators = []sdk.AnteDecorator{
feemarketante.NewFeeMarketCheckDecorator( // fee market check replaces fee deduct decorator
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
s.app.FeeMarketKeeper,
ante.NewDeductFeeDecorator(
s.app.AccountKeeper,
s.app.BankKeeper,
s.app.FeeGrantKeeper,
nil,
),
),
}
})
It("Deduct Fees", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := testdata.NewTestMsg(addr1)
feeAmount := NewTestFeeAmount()
gasLimit := testdata.NewTestGasLimit()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// Set account with insufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(10_000_000_000)))
//nocheck:errcheck
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
_, err = antehandler(s.ctx, tx, false)
Expect(err).NotTo(BeNil(), "Tx did not error when fee payer had insufficient funds")
// Set account with sufficient funds
s.app.AccountKeeper.SetAccount(s.ctx, acc)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(200_000_000_000))))
Expect(err).To(BeNil())
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored after account has been set with sufficient funds")
})
It("TaxableTx Lifecycle - DID: MsgCreateDidDoc", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := SandboxDidDoc()
feeAmount := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(5_000_000_000)))
gasLimit := testdata.NewTestGasLimit()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
s.txBuilder.SetFeePayer(addr1)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
amount := math.NewInt(100_000_000_000)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, amount)))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
taxDecorator := cheqdpost.NewTaxDecorator(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, s.app.DidKeeper, s.app.ResourceKeeper, s.app.FeeMarketKeeper)
posthandler := sdk.ChainPostDecorators(taxDecorator)
// get supply before tx
supplyBeforeDeflation, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// antehandler should not error to replay in mempool or deliverTx
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when taxable on deliverTx")
_, err = posthandler(s.ctx, tx, false, true)
Expect(err).To(BeNil(), "Tx errored when fee payer had sufficient funds and provided sufficient fee while subtracting tax on deliverTx")
// get fee params
feeParams, err := s.app.DidKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// check balance of fee payer
balance := s.app.BankKeeper.GetBalance(s.ctx, addr1, didtypes.BaseMinimalDenom)
Expect(amount.Sub(math.NewInt(feeParams.CreateDid.Amount.Int64()))).To(Equal(balance.Amount), "Tax was not subtracted from the fee payer")
// get supply after tx
supplyAfterDeflation, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// check that supply was deflated
burnt := cheqdante.GetBurnFeePortion(feeParams.BurnFactor, sdk.NewCoins(feeParams.CreateDid))
Expect(supplyBeforeDeflation.Sub(supplyAfterDeflation...)).To(Equal(burnt), "Supply was not deflated")
// check that reward has been sent to the fee collector
reward := cheqdante.GetRewardPortion(sdk.NewCoins(feeParams.CreateDid), burnt)
feeCollector := s.app.AccountKeeper.GetModuleAddress(authtypes.FeeCollectorName)
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom)
Expect(feeCollectorBalance.Amount).To(Equal(reward.AmountOf(didtypes.BaseMinimalDenom)), "Reward was not sent to the fee collector")
})
It("TaxableTx Lifecycle - DLR: MsgCreateResource JSON", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := SandboxResource()
feeAmount := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(2_500_000_000)))
gasLimit := uint64(2_000_000)
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
s.txBuilder.SetFeePayer(addr1)
s.ctx = s.ctx.WithMinGasPrices(sdk.NewDecCoins(sdk.NewDecCoinFromDec(didtypes.BaseMinimalDenom, math.LegacyMustNewDecFromStr("5000"))))
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
amount := math.NewInt(100_000_000_000)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, amount)))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
taxDecorator := cheqdpost.NewTaxDecorator(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, s.app.DidKeeper, s.app.ResourceKeeper, s.app.FeeMarketKeeper)
posthandler := sdk.ChainPostDecorators(taxDecorator)
// get supply before tx
supplyBeforeDeflation, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// antehandler should not error to replay in mempool or deliverTx
_, err = antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when taxable on deliverTx")
_, err = posthandler(s.ctx, tx, false, true)
Expect(err).To(BeNil(), "Tx errored when fee payer had sufficient funds and provided sufficient fee while subtracting tax on deliverTx")
// get fee params
feeParams, err := s.app.ResourceKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// check balance of fee payer
balance := s.app.BankKeeper.GetBalance(s.ctx, addr1, didtypes.BaseMinimalDenom)
Expect(amount.Sub(math.NewInt(feeParams.Json.Amount.Int64()))).To(Equal(balance.Amount), "Tax was not subtracted from the fee payer")
// get supply after tx
supplyAfterDeflation, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// check that supply was deflated
burnt := cheqdante.GetBurnFeePortion(feeParams.BurnFactor, sdk.NewCoins(feeParams.Json))
Expect(supplyBeforeDeflation.Sub(supplyAfterDeflation...)).To(Equal(burnt), "Supply was not deflated")
// check that reward has been sent to the fee collector
reward := cheqdante.GetRewardPortion(sdk.NewCoins(feeParams.Json), burnt)
feeCollector := s.app.AccountKeeper.GetModuleAddress(authtypes.FeeCollectorName)
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom)
Expect(feeCollectorBalance.Amount).To(Equal(reward.AmountOf(didtypes.BaseMinimalDenom)), "Reward was not sent to the fee collector")
})
It("Non TaxableTx Lifecycle", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := testdata.NewTestMsg(addr1)
feeAmount := NewTestFeeAmount()
gasLimit := testdata.NewTestGasLimit()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
s.txBuilder.SetFeePayer(addr1)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
amount := math.NewInt(300_000_000_000)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, amount)))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
taxDecorator := cheqdpost.NewTaxDecorator(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, s.app.DidKeeper, s.app.ResourceKeeper, s.app.FeeMarketKeeper)
posthandler := sdk.ChainPostDecorators(taxDecorator)
// get supply before tx
supplyBefore, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// antehandler should not error since we make sure that the fee is sufficient in DeliverTx (simulate=false only, Posthandler will check it otherwise)
newCtx, err := antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when non-taxable on deliverTx")
_, _, proposer := testdata.KeyTestPubAddr()
s.ctx = newCtx
a := s.ctx.BlockHeader()
a.ProposerAddress = proposer
newCtx = s.ctx.WithBlockHeader(a)
s.ctx = newCtx
_, err = posthandler(s.ctx, tx, false, true)
Expect(err).To(BeNil(), "Tx errored when non-taxable on deliverTx from posthandler")
// check balance of fee payer
balance := s.app.BankKeeper.GetBalance(s.ctx, addr1, didtypes.BaseMinimalDenom)
Expect(amount.Sub(math.NewInt(feeAmount.AmountOf(didtypes.BaseMinimalDenom).Int64()))).To(Equal(balance.Amount), "Fee amount subtracted was not equal to fee amount required for non-taxable tx")
// get supply after tx
supplyAfter, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// check that supply was not deflated
Expect(supplyBefore).To(Equal(supplyAfter), "Supply was deflated")
// check that reward has been sent to the fee collector
feeCollector := s.app.AccountKeeper.GetModuleAddress(feemarkettypes.FeeCollectorName)
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom)
Expect((feeCollectorBalance.Amount).GT(math.NewInt(0)))
})
It("Non TaxableTx Lifecycle - Ensure minimum gas prices", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
// msg and signatures
msg := testdata.NewTestMsg(addr1)
feeAmount := sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1*didtypes.BaseFactor)) // 1 CHEQ
gasLimit := testdata.NewTestGasLimit()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
s.txBuilder.SetFeeAmount(feeAmount)
s.txBuilder.SetGasLimit(gasLimit)
s.txBuilder.SetFeePayer(addr1)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
amount := math.NewInt(300_000_000_000) // 300 CHEQ
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, amount)))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
// get feemarket params
feemarketParams, err := s.app.FeeMarketKeeper.GetParams(s.ctx)
Expect(err).To(BeNil())
// enforced enablement
feemarketParams.Enabled = true
// enforce burn
feemarketParams.DistributeFees = false
// enforce maximum block utilisation
feemarketParams.MaxBlockUtilization = feemarkettypes.DefaultMaxBlockUtilization
// set minimum gas prices to realistic value
feemarketParams.MinBaseGasPrice = math.LegacyMustNewDecFromStr("0.5")
err = s.app.FeeMarketKeeper.SetParams(s.ctx, feemarketParams)
Expect(err).To(BeNil())
// get feemarket state
feemarketState, err := s.app.FeeMarketKeeper.GetState(s.ctx)
Expect(err).To(BeNil())
// set base gas price to realistic value
feemarketState.BaseGasPrice = math.LegacyMustNewDecFromStr("0.5")
// set feemarket state
err = s.app.FeeMarketKeeper.SetState(s.ctx, feemarketState)
Expect(err).To(BeNil())
taxDecorator := cheqdpost.NewTaxDecorator(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, s.app.DidKeeper, s.app.ResourceKeeper, s.app.FeeMarketKeeper)
posthandler := sdk.ChainPostDecorators(taxDecorator)
// get supply before tx
supplyBefore, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// antehandler should not error since we make sure that the fee is sufficient in DeliverTx (simulate=false only, Posthandler will check it otherwise)
newCtx, err := antehandler(s.ctx, tx, false)
Expect(err).To(BeNil(), "Tx errored when non-taxable on deliverTx")
_, _, proposer := testdata.KeyTestPubAddr()
s.ctx = newCtx
a := s.ctx.BlockHeader()
a.ProposerAddress = proposer
newCtx = s.ctx.WithBlockHeader(a)
s.ctx = newCtx
_, err = posthandler(s.ctx, tx, false, true)
Expect(err).To(BeNil(), "Tx errored when non-taxable on deliverTx from posthandler")
// check balance of fee payer
balance := s.app.BankKeeper.GetBalance(s.ctx, addr1, didtypes.BaseMinimalDenom)
Expect(amount.Sub(math.NewInt(feeAmount.AmountOf(didtypes.BaseMinimalDenom).Int64()))).To(Equal(balance.Amount), "Fee amount subtracted was not equal to fee amount required for non-taxable tx")
// get supply after tx
supplyAfter, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// check that supply was not deflated
Expect(supplyBefore).To(Equal(supplyAfter), "Supply was deflated")
// check that reward has been sent to the fee collector
feeCollector := s.app.AccountKeeper.GetModuleAddress(feemarkettypes.FeeCollectorName)
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom)
Expect((feeCollectorBalance.Amount).GT(math.NewInt(0)))
})
It("TaxableTx Lifecycle on Simulation", func() {
// keys and addresses
priv1, _, addr1 := testdata.KeyTestPubAddr()
msg := SandboxDidDoc()
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil())
// set zero gas
s.txBuilder.SetGasLimit(0)
privs, accNums, accSeqs := []cryptotypes.PrivKey{priv1}, []uint64{0}, []uint64{0}
tx, err := s.CreateTestTx(privs, accNums, accSeqs, s.ctx.ChainID())
Expect(err).To(BeNil())
// set account with sufficient funds
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
amount := math.NewInt(100_000_000_000)
err = testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, amount)))
Expect(err).To(BeNil())
dfd := cheqdante.NewOverAllDecorator(decorators...)
antehandler := sdk.ChainAnteDecorators(dfd)
taxDecorator := cheqdpost.NewTaxDecorator(s.app.AccountKeeper, s.app.BankKeeper, s.app.FeeGrantKeeper, s.app.DidKeeper, s.app.ResourceKeeper, s.app.FeeMarketKeeper)
posthandler := sdk.ChainPostDecorators(taxDecorator)
// get supply before tx
supplyBefore, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// antehandler should not error since we make sure that the fee is sufficient in DeliverTx (simulate=false only, Posthandler will check it otherwise)
_, err = antehandler(s.ctx, tx, true)
Expect(err).To(BeNil(), "Tx errored when taxable on deliverTx simulation mode")
_, err = posthandler(s.ctx, tx, true, true)
Expect(err).To(BeNil(), "Tx errored when fee payer had sufficient funds and provided sufficient fee while skipping tax simulation mode")
// check balance of fee payer
balance := s.app.BankKeeper.GetBalance(s.ctx, addr1, didtypes.BaseMinimalDenom)
Expect(amount).To(Equal(balance.Amount), "Tax was subtracted from fee payer when taxable tx was simulated")
// get supply after tx
supplyAfter, _, err := s.app.BankKeeper.GetPaginatedTotalSupply(s.ctx, &query.PageRequest{})
Expect(err).To(BeNil())
// check that supply was not deflated
Expect(supplyBefore).To(Equal(supplyAfter), "Supply was deflated when taxable tx simulation mode")
// check that no fee has been sent to the fee collector
feeCollector := s.app.AccountKeeper.GetModuleAddress(authtypes.FeeCollectorName)
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom)
Expect(feeCollectorBalance.Amount).To(Equal(math.NewInt(0)), "Reward was sent to the fee collector when taxable tx simulation mode")
})
})
var _ = Describe("Fee abstraction", func() {
var gasLimit uint64
var mockHostZoneConfig types.HostChainFeeAbsConfig
// mockHostZoneConfig is used to mock the host zone config, with ibcfee as the ibc fee denom to be used as alternative fee
BeforeEach(func() {
gasLimit = 200000
mockHostZoneConfig = types.HostChainFeeAbsConfig{
IbcDenom: "ibcfee",
OsmosisPoolTokenDenomIn: "osmosis",
PoolId: 1,
Status: types.HostChainFeeAbsStatus_UPDATED,
}
})
// Define test cases inside a context
Context("Testing MempoolDecorator with different fee amounts", func() {
var suite *AnteTestSuite
BeforeEach(func() {
// Set up the test suite for each test case
suite = new(AnteTestSuite)
err := suite.SetupTest(true) // setup
Expect(err).To(BeNil(), "Error on creating test app")
suite.txBuilder = suite.clientCtx.TxConfig.NewTxBuilder()
})
It("should fail with empty fee", func() {
feeAmount := sdk.Coins{}
minGasPrice := sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 100))...)
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
mempoolDecorator := feeabsante.NewFeeAbstrationMempoolFeeDecorator(suite.app.FeeabsKeeper)
anteHandler := sdk.ChainAnteDecorators(mempoolDecorator)
_, err := anteHandler(suite.ctx, tx, false)
// Expect error due to insufficient fee
Expect(err).To(HaveOccurred())
Expect(strings.Contains(err.Error(), errors.ErrInsufficientFee.Error())).To(BeTrue())
})
It("should fail with insufficient native fee", func() {
feeAmount := sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 100))
minGasPrice := sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000))...)
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
mempoolDecorator := feeabsante.NewFeeAbstrationMempoolFeeDecorator(suite.app.FeeabsKeeper)
anteHandler := sdk.ChainAnteDecorators(mempoolDecorator)
_, err := anteHandler(suite.ctx, tx, false)
// Expect error due to insufficient fee
Expect(err).To(HaveOccurred())
Expect(strings.Contains(err.Error(), errors.ErrInsufficientFee.Error())).To(BeTrue())
})
It("should pass with sufficient native fee", func() {
feeAmount := sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000*int64(gasLimit)))
minGasPrice := sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000))...)
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
mempoolDecorator := feeabsante.NewFeeAbstrationMempoolFeeDecorator(suite.app.FeeabsKeeper)
anteHandler := sdk.ChainAnteDecorators(mempoolDecorator)
_, err := anteHandler(suite.ctx, tx, false)
// No error is expected
Expect(err).ToNot(HaveOccurred())
})
It("should fail with unknown ibc fee denom", func() {
feeAmount := sdk.NewCoins(sdk.NewInt64Coin("ibcfee", 1000*int64(gasLimit)))
minGasPrice := sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000))...)
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
mempoolDecorator := feeabsante.NewFeeAbstrationMempoolFeeDecorator(suite.app.FeeabsKeeper)
anteHandler := sdk.ChainAnteDecorators(mempoolDecorator)
_, err := anteHandler(suite.ctx, tx, false)
// Expect error due to unknown ibc fee denom
Expect(err).To(HaveOccurred())
Expect(strings.Contains(err.Error(), errors.ErrInvalidCoins.Error())).To(BeTrue())
})
It("should pass with sufficient ibc fee", func() {
feeAmount := sdk.NewCoins(sdk.NewInt64Coin("ibcfee", 1000*int64(gasLimit)))
minGasPrice := sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin("stake", 1000))...)
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// Configure the HostZoneConfig
err := suite.app.FeeabsKeeper.SetHostZoneConfig(suite.ctx, mockHostZoneConfig)
Expect(err).ToNot(HaveOccurred())
suite.app.FeeabsKeeper.SetTwapRate(suite.ctx, "ibcfee", math.LegacyNewDec(1))
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
mempoolDecorator := feeabsante.NewFeeAbstrationMempoolFeeDecorator(suite.app.FeeabsKeeper)
anteHandler := sdk.ChainAnteDecorators(mempoolDecorator)
_, err = anteHandler(suite.ctx, tx, false)
// No error is expected
Expect(err).ToNot(HaveOccurred())
})
})
})
var _ = Describe("DeductFeeDecorator", func() {
var gasLimit uint64
var minGasPrice sdk.DecCoins
var feeAmount sdk.Coins
var ibcFeeAmount sdk.Coins
var mockHostZoneConfig types.HostChainFeeAbsConfig
var suite *AnteTestSuite
var testAcc TestAccount
// Setup the common test data
BeforeEach(func() {
gasLimit = 200000
minGasPrice = sdk.NewDecCoinsFromCoins(sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000))...)
feeAmount = sdk.NewCoins(sdk.NewInt64Coin(didtypes.BaseMinimalDenom, 1000*int64(gasLimit)))
ibcFeeAmount = sdk.NewCoins(sdk.NewInt64Coin("ibcfee", 1000*int64(gasLimit)))
mockHostZoneConfig = types.HostChainFeeAbsConfig{
IbcDenom: "ibcfee",
OsmosisPoolTokenDenomIn: "osmosis",
PoolId: 1,
Status: types.HostChainFeeAbsStatus_UPDATED,
}
// Initialize suite for each test case
suite = new(AnteTestSuite)
err := suite.SetupTest(true) // setup
Expect(err).To(BeNil(), "Error on creating test app")
suite.txBuilder = suite.clientCtx.TxConfig.NewTxBuilder()
acc, err := suite.CreateTestAccounts(1)
testAcc = acc[0]
Expect(err).To(BeNil())
Expect(len(acc)).To(Equal(1))
suite.txBuilder.SetGasLimit(gasLimit)
suite.txBuilder.SetFeeAmount(feeAmount)
suite.txBuilder.SetFeePayer(acc[0].acc.GetAddress())
suite.ctx = suite.ctx.WithMinGasPrices(minGasPrice)
// minFee, _ := minGasPrice.TruncateDecimal()
params, err := suite.app.StakingKeeper.GetParams(suite.ctx)
Expect(err).To(BeNil(), "Error getting staking params")
params.BondDenom = didtypes.BaseMinimalDenom
err = suite.app.StakingKeeper.SetParams(suite.ctx, params)
Expect(err).To(BeNil(), "Error setting the params")
// this line will create the module account
_ = suite.app.AccountKeeper.GetModuleAccount(suite.ctx, types.ModuleName)
})
When("native fee is sufficient", func() {
It("should pass with sufficient native fee", func() {
suite.app.FeeabsKeeper.SetTwapRate(suite.ctx, "ibcfee", math.LegacyNewDec(1))
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
deductFeeDecorator := feeabsante.NewFeeAbstractionDeductFeeDecorate(suite.app.AccountKeeper, suite.app.BankKeeper, suite.app.FeeabsKeeper, suite.app.FeeGrantKeeper)
anteHandler := sdk.ChainAnteDecorators(deductFeeDecorator)
_, err := anteHandler(suite.ctx, tx, false)
Expect(err).ToNot(HaveOccurred())
})
})
When("ibc fee is insufficient", func() {
It("should fail due to insufficient ibc fee", func() {
err := suite.app.FeeabsKeeper.SetHostZoneConfig(suite.ctx, mockHostZoneConfig)
Expect(err).ToNot(HaveOccurred())
suite.app.FeeabsKeeper.SetTwapRate(suite.ctx, "ibcfee", math.LegacyNewDec(1))
suite.txBuilder.SetFeeAmount(ibcFeeAmount)
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
deductFeeDecorator := feeabsante.NewFeeAbstractionDeductFeeDecorate(suite.app.AccountKeeper, suite.app.BankKeeper, suite.app.FeeabsKeeper, suite.app.FeeGrantKeeper)
anteHandler := sdk.ChainAnteDecorators(deductFeeDecorator)
_, err = anteHandler(suite.ctx, tx, false)
Expect(err).To(HaveOccurred())
Expect(strings.Contains(err.Error(), errors.ErrInsufficientFunds.Error())).To(BeTrue())
})
})
When("ibc fee is sufficient", func() {
It("should pass with sufficient ibc fee", func() {
err := suite.app.FeeabsKeeper.SetHostZoneConfig(suite.ctx, mockHostZoneConfig)
Expect(err).ToNot(HaveOccurred())
suite.app.FeeabsKeeper.SetTwapRate(suite.ctx, "ibcfee", math.LegacyNewDec(1))
suite.txBuilder.SetFeeAmount(ibcFeeAmount)
feeabsAddr := suite.app.FeeabsKeeper.GetFeeAbsModuleAddress()
// err = suite.mintCoins(feeabsAddr, sdk.NewCoins(feeAmount...))
err = testutil.FundAccount(suite.ctx, suite.app.BankKeeper, feeabsAddr, feeAmount)
Expect(err).ToNot(HaveOccurred())
err = testutil.FundAccount(suite.ctx, suite.app.BankKeeper, testAcc.acc.GetAddress(), ibcFeeAmount)
// err = suite.mintCoins(testAcc.acc.GetAddress(), sdk.NewCoins(ibcFeeAmount...))
Expect(err).ToNot(HaveOccurred())
// Construct and run the ante handler
tx := suite.txBuilder.GetTx()
deductFeeDecorator := feeabsante.NewFeeAbstractionDeductFeeDecorate(suite.app.AccountKeeper, suite.app.BankKeeper, suite.app.FeeabsKeeper, suite.app.FeeGrantKeeper)
anteHandler := sdk.ChainAnteDecorators(deductFeeDecorator)
_, err = anteHandler(suite.ctx, tx, false)
Expect(err).ToNot(HaveOccurred())
})
})
})
var _ = Describe("Test Deduct Coins", func() {
// Create a new AnteTestSuite instance
s := new(AnteTestSuite)
BeforeEach(func() {
err := s.SetupTest(false) // Initialize the test environment
Expect(err).To(BeNil(), "Error on creating test app") // Ensure no error occurred
s.txBuilder = s.clientCtx.TxConfig.NewTxBuilder() // Create a new transaction builder
})
It("valid coins", func() {
_, _, addr1 := testdata.KeyTestPubAddr() // Generate a test address
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1) // Create a new account
s.app.AccountKeeper.SetAccount(s.ctx, acc) // Set the account in the account keeper
// Define the initial coins for the account
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(10_000_000_000)))
// Fund the account with the defined coins
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil(), "Error on funding account")
// Check whether DeductCoins work for valid coins
err = cheqdpost.DeductCoins(s.app.BankKeeper, s.ctx, coins, false)
// === Validate the results ===
Expect(err).To(BeNil(), "Error on deducting coins")
})
It("valid zero coin", func() {
_, _, addr1 := testdata.KeyTestPubAddr() // Generate a test address
// Create a test message and set transaction parameters
msg := testdata.NewTestMsg(addr1)
feeAmount := NewTestFeeAmount() // Define fee amount
gasLimit := testdata.NewTestGasLimit() // Define gas limit
Expect(s.txBuilder.SetMsgs(msg)).To(BeNil()) // Set the message in the transaction builder
s.txBuilder.SetFeeAmount(feeAmount) // Set the fee amount
s.txBuilder.SetGasLimit(gasLimit) // Set the gas limit
// Create a new account and set it in the account keeper
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1)
s.app.AccountKeeper.SetAccount(s.ctx, acc)
// Define the initial coins and fee coins for the account
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(10_000_000_000)))
feeCoin := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(0))) // Zero fee coin
// Fund the account with the initial coins
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil(), "Error on funding account")
// === Execute the DeductCoins function with zero fee ===
err = cheqdpost.DeductCoins(s.app.BankKeeper, s.ctx, feeCoin, false)
Expect(err).To(BeNil(), "Error on deducting zero coin")
})
})
var _ = Describe("Test Deduct coins and distribute fees", func() {
// Create a new AnteTestSuite instance
s := new(AnteTestSuite)
BeforeEach(func() {
err := s.SetupTest(false) // Initialize the test environment
Expect(err).To(BeNil(), "Error on creating test app") // Ensure no error occurred
s.txBuilder = s.clientCtx.TxConfig.NewTxBuilder() // Create a new transaction builder
})
It("valid coins and distribute to feeCollector", func() {
_, _, addr1 := testdata.KeyTestPubAddr() // Generate a test address
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1) // Create a new account
s.app.AccountKeeper.SetAccount(s.ctx, acc) // Set the account in the account keeper
// Define the initial coins for the account
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(10_000_000_000)))
// Fund the account with the defined coins
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil(), "Error on funding account")
// Define the fee to be deducted and the flag for distributing fees
distributeFees := true
deductFee := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(5000)))
// Send the coins to the fee collector module
// Initially feemarket module has zero funds so we send it module
// So while performing the deductCoins we don't get error
err = s.app.BankKeeper.SendCoinsFromAccountToModule(s.ctx, addr1, feemarkettypes.FeeCollectorName, deductFee)
Expect(err).To(BeNil(), "Error on sending coins to fee collector")
// Deduct the coins and distribute the fees
err = cheqdpost.DeductCoins(s.app.BankKeeper, s.ctx, deductFee, distributeFees)
Expect(err).To(BeNil(), "Error on deducting coins")
// Check that the fee has been sent to the fee collector
feeCollector := s.app.AccountKeeper.GetModuleAddress(authtypes.FeeCollectorName) // Get fee collector address
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom) // Get balance
// Ensure the deducted fee has been correctly transferred to the fee collector
Expect(feeCollectorBalance.Amount).To(Equal(deductFee.AmountOf(didtypes.BaseMinimalDenom)))
})
It("valid zero coin and distribute to feeCollector", func() {
_, _, addr1 := testdata.KeyTestPubAddr() // Generate a test address
acc := s.app.AccountKeeper.NewAccountWithAddress(s.ctx, addr1) // Create a new account
s.app.AccountKeeper.SetAccount(s.ctx, acc) // Set the account in the account keeper
// Define the initial coins for the account
coins := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(10_000_000_000)))
// Fund the account with the defined coins
err := testutil.FundAccount(s.ctx, s.app.BankKeeper, addr1, coins)
Expect(err).To(BeNil(), "Error on funding account")
// Define the zero fee to be deducted and the flag for distributing fees
distributeFees := true
deductFee := sdk.NewCoins(sdk.NewCoin(didtypes.BaseMinimalDenom, math.NewInt(0))) // Zero fee
// Send the zero coins to the fee collector module
err = s.app.BankKeeper.SendCoinsFromAccountToModule(s.ctx, addr1, feemarkettypes.FeeCollectorName, deductFee)
Expect(err).To(BeNil(), "Error on sending zero coin to fee collector")
// Deduct the zero coins and distribute the fees
err = cheqdpost.DeductCoins(s.app.BankKeeper, s.ctx, deductFee, distributeFees)
Expect(err).To(BeNil(), "Error on deducting zero coin")
// === Validate the results ===
// Check that the fee has been sent to the fee collector
feeCollector := s.app.AccountKeeper.GetModuleAddress(authtypes.FeeCollectorName) // Get fee collector address
feeCollectorBalance := s.app.BankKeeper.GetBalance(s.ctx, feeCollector, didtypes.BaseMinimalDenom) // Get balance
// Ensure the zero fee has been correctly handled
Expect(feeCollectorBalance.Amount).To(Equal(deductFee.AmountOf(didtypes.BaseMinimalDenom)))
})
})
var _ = Describe("Test Send tip", func() {
// Create a new AnteTestSuite instance