480 lines
18 KiB
Go
480 lines
18 KiB
Go
package slashing
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import (
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"testing"
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"time"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/stake"
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"github.com/stretchr/testify/require"
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abci "github.com/tendermint/tendermint/abci/types"
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)
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// Have to change these parameters for tests
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// lest the tests take forever
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func keeperTestParams() Params {
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params := DefaultParams()
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params.SignedBlocksWindow = 1000
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params.DowntimeUnbondDuration = 60 * 60
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params.DoubleSignUnbondDuration = 60 * 60
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return params
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}
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// ______________________________________________________________
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// Test that a validator is slashed correctly
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// when we discover evidence of infraction
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func TestHandleDoubleSign(t *testing.T) {
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// initial setup
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ctx, ck, sk, _, keeper := createTestInput(t, keeperTestParams())
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// validator added pre-genesis
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ctx = ctx.WithBlockHeight(-1)
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amtInt := int64(100)
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operatorAddr, val, amt := addrs[0], pks[0], sdk.NewInt(amtInt)
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got := stake.NewHandler(sk)(ctx, NewTestMsgCreateValidator(operatorAddr, val, amt))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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keeper.AddValidators(ctx, validatorUpdates)
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require.Equal(t, ck.GetCoins(ctx, sdk.AccAddress(operatorAddr)), sdk.Coins{{sk.GetParams(ctx).BondDenom, initCoins.Sub(amt)}})
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require.True(t, sdk.NewDecFromInt(amt).Equal(sk.Validator(ctx, operatorAddr).GetPower()))
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// handle a signature to set signing info
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, true)
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// double sign less than max age
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keeper.handleDoubleSign(ctx, val.Address(), 0, time.Unix(0, 0), amtInt)
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// should be jailed
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require.True(t, sk.Validator(ctx, operatorAddr).GetJailed())
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// unjail to measure power
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sk.Unjail(ctx, sdk.ConsAddress(val.Address()))
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// power should be reduced
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require.Equal(
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t, sdk.NewDecFromInt(amt).Mul(sdk.NewDec(19).Quo(sdk.NewDec(20))),
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sk.Validator(ctx, operatorAddr).GetPower(),
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)
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ctx = ctx.WithBlockHeader(abci.Header{Time: time.Unix(1, 0).Add(keeper.MaxEvidenceAge(ctx))})
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// double sign past max age
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keeper.handleDoubleSign(ctx, val.Address(), 0, time.Unix(0, 0), amtInt)
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require.Equal(
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t, sdk.NewDecFromInt(amt).Mul(sdk.NewDec(19).Quo(sdk.NewDec(20))),
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sk.Validator(ctx, operatorAddr).GetPower(),
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)
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}
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// Test that the amount a validator is slashed for multiple double signs
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// is correctly capped by the slashing period in which they were committed
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func TestSlashingPeriodCap(t *testing.T) {
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// initial setup
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ctx, ck, sk, _, keeper := createTestInput(t, DefaultParams())
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amtInt := int64(100)
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operatorAddr, amt := addrs[0], sdk.NewInt(amtInt)
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valConsPubKey, valConsAddr := pks[0], pks[0].Address()
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got := stake.NewHandler(sk)(ctx, NewTestMsgCreateValidator(operatorAddr, valConsPubKey, amt))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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ctx = ctx.WithBlockHeight(ctx.BlockHeight() + 1)
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keeper.AddValidators(ctx, validatorUpdates)
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require.Equal(t, ck.GetCoins(ctx, sdk.AccAddress(operatorAddr)), sdk.Coins{{sk.GetParams(ctx).BondDenom, initCoins.Sub(amt)}})
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require.True(t, sdk.NewDecFromInt(amt).Equal(sk.Validator(ctx, operatorAddr).GetPower()))
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// handle a signature to set signing info
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keeper.handleValidatorSignature(ctx, valConsAddr, amtInt, true)
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// double sign less than max age
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keeper.handleDoubleSign(ctx, valConsAddr, 1, time.Unix(0, 0), amtInt)
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// should be jailed
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require.True(t, sk.Validator(ctx, operatorAddr).GetJailed())
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// end block
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stake.EndBlocker(ctx, sk)
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// update block height
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ctx = ctx.WithBlockHeight(int64(2))
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// unjail to measure power
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sk.Unjail(ctx, sdk.ConsAddress(valConsAddr))
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// end block
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stake.EndBlocker(ctx, sk)
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// power should be reduced
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expectedPower := sdk.NewDecFromInt(amt).Mul(sdk.NewDec(19).Quo(sdk.NewDec(20)))
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require.Equal(t, expectedPower, sk.Validator(ctx, operatorAddr).GetPower())
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// double sign again, same slashing period
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keeper.handleDoubleSign(ctx, valConsAddr, 1, time.Unix(0, 0), amtInt)
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// should be jailed
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require.True(t, sk.Validator(ctx, operatorAddr).GetJailed())
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// end block
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stake.EndBlocker(ctx, sk)
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// update block height
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ctx = ctx.WithBlockHeight(int64(3))
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// unjail to measure power
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sk.Unjail(ctx, sdk.ConsAddress(valConsAddr))
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// end block
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stake.EndBlocker(ctx, sk)
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// power should be equal, no more should have been slashed
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expectedPower = sdk.NewDecFromInt(amt).Mul(sdk.NewDec(19).Quo(sdk.NewDec(20)))
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require.Equal(t, expectedPower, sk.Validator(ctx, operatorAddr).GetPower())
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// double sign again, new slashing period
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keeper.handleDoubleSign(ctx, valConsAddr, 3, time.Unix(0, 0), amtInt)
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// should be jailed
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require.True(t, sk.Validator(ctx, operatorAddr).GetJailed())
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// unjail to measure power
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sk.Unjail(ctx, sdk.ConsAddress(valConsAddr))
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// end block
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stake.EndBlocker(ctx, sk)
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// power should be reduced
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expectedPower = sdk.NewDecFromInt(amt).Mul(sdk.NewDec(18).Quo(sdk.NewDec(20)))
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require.Equal(t, expectedPower, sk.Validator(ctx, operatorAddr).GetPower())
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}
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// Test a validator through uptime, downtime, revocation,
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// unrevocation, starting height reset, and revocation again
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func TestHandleAbsentValidator(t *testing.T) {
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// initial setup
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ctx, ck, sk, _, keeper := createTestInput(t, keeperTestParams())
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amtInt := int64(100)
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addr, val, amt := addrs[0], pks[0], sdk.NewInt(amtInt)
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sh := stake.NewHandler(sk)
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slh := NewHandler(keeper)
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got := sh(ctx, NewTestMsgCreateValidator(addr, val, amt))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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keeper.AddValidators(ctx, validatorUpdates)
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require.Equal(t, ck.GetCoins(ctx, sdk.AccAddress(addr)), sdk.Coins{{sk.GetParams(ctx).BondDenom, initCoins.Sub(amt)}})
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require.True(t, sdk.NewDecFromInt(amt).Equal(sk.Validator(ctx, addr).GetPower()))
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// will exist since the validator has been bonded
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info, found := keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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require.Equal(t, int64(0), info.IndexOffset)
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require.Equal(t, int64(0), info.MissedBlocksCounter)
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require.Equal(t, time.Unix(0, 0).UTC(), info.JailedUntil)
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height := int64(0)
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// 1000 first blocks OK
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for ; height < keeper.SignedBlocksWindow(ctx); height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, true)
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}
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info, found = keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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require.Equal(t, int64(0), info.MissedBlocksCounter)
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// 500 blocks missed
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for ; height < keeper.SignedBlocksWindow(ctx)+(keeper.SignedBlocksWindow(ctx)-keeper.MinSignedPerWindow(ctx)); height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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}
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info, found = keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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require.Equal(t, keeper.SignedBlocksWindow(ctx)-keeper.MinSignedPerWindow(ctx), info.MissedBlocksCounter)
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// validator should be bonded still
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validator, _ := sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Bonded, validator.GetStatus())
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pool := sk.GetPool(ctx)
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require.Equal(t, amtInt, pool.BondedTokens.RoundInt64())
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// 501st block missed
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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info, found = keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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// counter now reset to zero
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require.Equal(t, int64(0), info.MissedBlocksCounter)
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// end block
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stake.EndBlocker(ctx, sk)
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// validator should have been jailed
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Unbonding, validator.GetStatus())
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slashAmt := sdk.NewDec(amtInt).Mul(keeper.SlashFractionDowntime(ctx)).RoundInt64()
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// validator should have been slashed
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require.Equal(t, amtInt-slashAmt, validator.GetTokens().RoundInt64())
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// 502nd block *also* missed (since the LastCommit would have still included the just-unbonded validator)
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height++
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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info, found = keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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require.Equal(t, int64(1), info.MissedBlocksCounter)
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// end block
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stake.EndBlocker(ctx, sk)
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// validator should not have been slashed any more, since it was already jailed
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, amtInt-slashAmt, validator.GetTokens().RoundInt64())
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// 502nd block *double signed* (oh no!)
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keeper.handleDoubleSign(ctx, val.Address(), height, ctx.BlockHeader().Time, amtInt)
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// validator should have been slashed
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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secondSlashAmt := sdk.NewDec(amtInt).Mul(keeper.SlashFractionDoubleSign(ctx)).RoundInt64()
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require.Equal(t, amtInt-slashAmt-secondSlashAmt, validator.GetTokens().RoundInt64())
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// unrevocation should fail prior to jail expiration
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got = slh(ctx, NewMsgUnjail(addr))
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require.False(t, got.IsOK())
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// unrevocation should succeed after jail expiration
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ctx = ctx.WithBlockHeader(abci.Header{Time: time.Unix(1, 0).Add(keeper.DowntimeUnbondDuration(ctx))})
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got = slh(ctx, NewMsgUnjail(addr))
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require.True(t, got.IsOK())
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// end block
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stake.EndBlocker(ctx, sk)
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// validator should be rebonded now
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Bonded, validator.GetStatus())
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// validator should have been slashed
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pool = sk.GetPool(ctx)
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require.Equal(t, amtInt-slashAmt-secondSlashAmt, pool.BondedTokens.RoundInt64())
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// validator start height should not have been changed
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info, found = keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, int64(0), info.StartHeight)
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// we've missed 2 blocks more than the maximum, so the counter was reset to 0 at 1 block more and is now 1
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require.Equal(t, int64(1), info.MissedBlocksCounter)
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// validator should not be immediately jailed again
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height++
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Bonded, validator.GetStatus())
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// 500 signed blocks
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nextHeight := height + keeper.MinSignedPerWindow(ctx) + 1
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for ; height < nextHeight; height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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}
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// end block
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stake.EndBlocker(ctx, sk)
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// validator should be jailed again after 500 unsigned blocks
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nextHeight = height + keeper.MinSignedPerWindow(ctx) + 1
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for ; height <= nextHeight; height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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}
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// end block
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stake.EndBlocker(ctx, sk)
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Unbonding, validator.GetStatus())
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}
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// Test a new validator entering the validator set
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// Ensure that SigningInfo.StartHeight is set correctly
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// and that they are not immediately jailed
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func TestHandleNewValidator(t *testing.T) {
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// initial setup
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ctx, ck, sk, _, keeper := createTestInput(t, keeperTestParams())
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addr, val, amt := addrs[0], pks[0], int64(100)
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sh := stake.NewHandler(sk)
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// 1000 first blocks not a validator
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ctx = ctx.WithBlockHeight(keeper.SignedBlocksWindow(ctx) + 1)
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// Validator created
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got := sh(ctx, NewTestMsgCreateValidator(addr, val, sdk.NewInt(amt)))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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keeper.AddValidators(ctx, validatorUpdates)
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require.Equal(t, ck.GetCoins(ctx, sdk.AccAddress(addr)), sdk.Coins{{sk.GetParams(ctx).BondDenom, initCoins.SubRaw(amt)}})
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require.Equal(t, sdk.NewDec(amt), sk.Validator(ctx, addr).GetPower())
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// Now a validator, for two blocks
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keeper.handleValidatorSignature(ctx, val.Address(), 100, true)
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ctx = ctx.WithBlockHeight(keeper.SignedBlocksWindow(ctx) + 2)
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keeper.handleValidatorSignature(ctx, val.Address(), 100, false)
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info, found := keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.True(t, found)
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require.Equal(t, keeper.SignedBlocksWindow(ctx)+1, info.StartHeight)
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require.Equal(t, int64(2), info.IndexOffset)
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require.Equal(t, int64(1), info.MissedBlocksCounter)
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require.Equal(t, time.Unix(0, 0).UTC(), info.JailedUntil)
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// validator should be bonded still, should not have been jailed or slashed
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validator, _ := sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Bonded, validator.GetStatus())
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pool := sk.GetPool(ctx)
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require.Equal(t, int64(100), pool.BondedTokens.RoundInt64())
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}
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// Test a jailed validator being "down" twice
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// Ensure that they're only slashed once
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func TestHandleAlreadyJailed(t *testing.T) {
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// initial setup
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ctx, _, sk, _, keeper := createTestInput(t, DefaultParams())
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amtInt := int64(100)
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addr, val, amt := addrs[0], pks[0], sdk.NewInt(amtInt)
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sh := stake.NewHandler(sk)
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got := sh(ctx, NewTestMsgCreateValidator(addr, val, amt))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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keeper.AddValidators(ctx, validatorUpdates)
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// 1000 first blocks OK
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height := int64(0)
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for ; height < keeper.SignedBlocksWindow(ctx); height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, true)
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}
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// 501 blocks missed
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for ; height < keeper.SignedBlocksWindow(ctx)+(keeper.SignedBlocksWindow(ctx)-keeper.MinSignedPerWindow(ctx))+1; height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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}
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// end block
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stake.EndBlocker(ctx, sk)
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// validator should have been jailed and slashed
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validator, _ := sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, sdk.Unbonding, validator.GetStatus())
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// validator should have been slashed
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require.Equal(t, amtInt-1, validator.GetTokens().RoundInt64())
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// another block missed
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, false)
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// validator should not have been slashed twice
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validator, _ = sk.GetValidatorByConsAddr(ctx, sdk.GetConsAddress(val))
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require.Equal(t, amtInt-1, validator.GetTokens().RoundInt64())
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}
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// Test a validator dipping in and out of the validator set
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// Ensure that missed blocks are tracked correctly and that
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// the start height of the signing info is reset correctly
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func TestValidatorDippingInAndOut(t *testing.T) {
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// initial setup
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// keeperTestParams set the SignedBlocksWindow to 1000 and MaxMissedBlocksPerWindow to 500
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ctx, _, sk, _, keeper := createTestInput(t, keeperTestParams())
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params := sk.GetParams(ctx)
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params.MaxValidators = 1
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sk.SetParams(ctx, params)
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amtInt := int64(100)
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addr, val, amt := addrs[0], pks[0], sdk.NewInt(amtInt)
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consAddr := sdk.ConsAddress(addr)
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sh := stake.NewHandler(sk)
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got := sh(ctx, NewTestMsgCreateValidator(addr, val, amt))
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require.True(t, got.IsOK())
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validatorUpdates := stake.EndBlocker(ctx, sk)
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keeper.AddValidators(ctx, validatorUpdates)
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// 100 first blocks OK
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height := int64(0)
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for ; height < int64(100); height++ {
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ctx = ctx.WithBlockHeight(height)
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keeper.handleValidatorSignature(ctx, val.Address(), amtInt, true)
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}
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// validator kicked out of validator set
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newAmt := int64(101)
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got = sh(ctx, NewTestMsgCreateValidator(addrs[1], pks[1], sdk.NewInt(newAmt)))
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require.True(t, got.IsOK())
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validatorUpdates = stake.EndBlocker(ctx, sk)
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require.Equal(t, 2, len(validatorUpdates))
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keeper.AddValidators(ctx, validatorUpdates)
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validator, _ := sk.GetValidator(ctx, addr)
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require.Equal(t, sdk.Unbonding, validator.Status)
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// 600 more blocks happened
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height = int64(700)
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ctx = ctx.WithBlockHeight(height)
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// validator added back in
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got = sh(ctx, newTestMsgDelegate(sdk.AccAddress(addrs[2]), addrs[0], sdk.NewInt(2)))
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require.True(t, got.IsOK())
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validatorUpdates = stake.EndBlocker(ctx, sk)
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|
require.Equal(t, 2, len(validatorUpdates))
|
|
validator, _ = sk.GetValidator(ctx, addr)
|
|
require.Equal(t, sdk.Bonded, validator.Status)
|
|
newAmt = int64(102)
|
|
|
|
// validator misses a block
|
|
keeper.handleValidatorSignature(ctx, val.Address(), newAmt, false)
|
|
height++
|
|
|
|
// shouldn't be jailed/kicked yet
|
|
validator, _ = sk.GetValidator(ctx, addr)
|
|
require.Equal(t, sdk.Bonded, validator.Status)
|
|
|
|
// validator misses 500 more blocks, 501 total
|
|
latest := height
|
|
for ; height < latest+500; height++ {
|
|
ctx = ctx.WithBlockHeight(height)
|
|
keeper.handleValidatorSignature(ctx, val.Address(), newAmt, false)
|
|
}
|
|
|
|
// should now be jailed & kicked
|
|
stake.EndBlocker(ctx, sk)
|
|
validator, _ = sk.GetValidator(ctx, addr)
|
|
require.Equal(t, sdk.Unbonding, validator.Status)
|
|
|
|
// check all the signing information
|
|
signInfo, found := keeper.getValidatorSigningInfo(ctx, consAddr)
|
|
require.True(t, found)
|
|
require.Equal(t, int64(0), signInfo.MissedBlocksCounter)
|
|
require.Equal(t, int64(0), signInfo.IndexOffset)
|
|
// array should be cleared
|
|
for offset := int64(0); offset < keeper.SignedBlocksWindow(ctx); offset++ {
|
|
missed := keeper.getValidatorMissedBlockBitArray(ctx, consAddr, offset)
|
|
require.False(t, missed)
|
|
}
|
|
|
|
// some blocks pass
|
|
height = int64(5000)
|
|
ctx = ctx.WithBlockHeight(height)
|
|
|
|
// validator rejoins and starts signing again
|
|
sk.Unjail(ctx, consAddr)
|
|
keeper.handleValidatorSignature(ctx, val.Address(), newAmt, true)
|
|
height++
|
|
|
|
// validator should not be kicked since we reset counter/array when it was jailed
|
|
stake.EndBlocker(ctx, sk)
|
|
validator, _ = sk.GetValidator(ctx, addr)
|
|
require.Equal(t, sdk.Bonded, validator.Status)
|
|
|
|
// validator misses 501 blocks
|
|
latest = height
|
|
for ; height < latest+501; height++ {
|
|
ctx = ctx.WithBlockHeight(height)
|
|
keeper.handleValidatorSignature(ctx, val.Address(), newAmt, false)
|
|
}
|
|
|
|
// validator should now be jailed & kicked
|
|
stake.EndBlocker(ctx, sk)
|
|
validator, _ = sk.GetValidator(ctx, addr)
|
|
require.Equal(t, sdk.Unbonding, validator.Status)
|
|
|
|
}
|