laconicd/x/feemarket/keeper/eip1559_test.go
2022-09-30 12:11:39 +05:30

117 lines
2.9 KiB
Go

package keeper_test
import (
"fmt"
"math/big"
abci "github.com/tendermint/tendermint/abci/types"
)
func (suite *KeeperTestSuite) TestCalculateBaseFee() {
testCases := []struct {
name string
NoBaseFee bool
malleate func()
expFee *big.Int
}{
{
"without BaseFee",
true,
func() {},
nil,
},
{
"with BaseFee - initial EIP-1559 block",
false,
func() {
suite.ctx = suite.ctx.WithBlockHeight(0)
},
suite.app.FeeMarketKeeper.GetParams(suite.ctx).BaseFee.BigInt(),
},
{
"with BaseFee - parent block used the same gas as its target",
false,
func() {
// non initial block
suite.ctx = suite.ctx.WithBlockHeight(1)
// Set gas used
suite.app.FeeMarketKeeper.SetBlockGasUsed(suite.ctx, 100)
// Set target/gasLimit through Consensus Param MaxGas
blockParams := abci.BlockParams{
MaxGas: 100,
MaxBytes: 10,
}
consParams := abci.ConsensusParams{Block: &blockParams}
suite.ctx = suite.ctx.WithConsensusParams(&consParams)
// set ElasticityMultiplier
params := suite.app.FeeMarketKeeper.GetParams(suite.ctx)
params.ElasticityMultiplier = 1
suite.app.FeeMarketKeeper.SetParams(suite.ctx, params)
},
suite.app.FeeMarketKeeper.GetParams(suite.ctx).BaseFee.BigInt(),
},
{
"with BaseFee - parent block used more gas than its target",
false,
func() {
suite.ctx = suite.ctx.WithBlockHeight(1)
suite.app.FeeMarketKeeper.SetBlockGasUsed(suite.ctx, 200)
blockParams := abci.BlockParams{
MaxGas: 100,
MaxBytes: 10,
}
consParams := abci.ConsensusParams{Block: &blockParams}
suite.ctx = suite.ctx.WithConsensusParams(&consParams)
params := suite.app.FeeMarketKeeper.GetParams(suite.ctx)
params.ElasticityMultiplier = 1
suite.app.FeeMarketKeeper.SetParams(suite.ctx, params)
},
big.NewInt(1125000000),
},
{
"with BaseFee - Parent gas used smaller than parent gas target",
false,
func() {
suite.ctx = suite.ctx.WithBlockHeight(1)
suite.app.FeeMarketKeeper.SetBlockGasUsed(suite.ctx, 50)
blockParams := abci.BlockParams{
MaxGas: 100,
MaxBytes: 10,
}
consParams := abci.ConsensusParams{Block: &blockParams}
suite.ctx = suite.ctx.WithConsensusParams(&consParams)
params := suite.app.FeeMarketKeeper.GetParams(suite.ctx)
params.ElasticityMultiplier = 1
suite.app.FeeMarketKeeper.SetParams(suite.ctx, params)
},
big.NewInt(937500000),
},
}
for _, tc := range testCases {
suite.Run(fmt.Sprintf("Case %s", tc.name), func() {
suite.SetupTest() // reset
params := suite.app.FeeMarketKeeper.GetParams(suite.ctx)
params.NoBaseFee = tc.NoBaseFee
suite.app.FeeMarketKeeper.SetParams(suite.ctx, params)
tc.malleate()
fee := suite.app.FeeMarketKeeper.CalculateBaseFee(suite.ctx)
if tc.NoBaseFee {
suite.Require().Nil(fee, tc.name)
} else {
suite.Require().Equal(tc.expFee, fee, tc.name)
}
})
}
}