310 lines
12 KiB
Go
310 lines
12 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 init() {
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defaultSignedBlocksWindow = 1000
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defaultDowntimeUnbondDuration = 60 * 60
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defaultDoubleSignUnbondDuration = 60 * 60
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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)
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sk = sk.WithValidatorHooks(keeper.ValidatorHooks())
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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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got := stake.NewHandler(sk)(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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// 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, addr).GetJailed())
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// unjail to measure power
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sk.Unjail(ctx, val)
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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, addr).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, addr).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)
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sk = sk.WithValidatorHooks(keeper.ValidatorHooks())
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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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got := stake.NewHandler(sk)(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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// 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, addr).GetJailed())
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// update block height
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ctx = ctx.WithBlockHeight(int64(1))
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// unjail to measure power
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sk.Unjail(ctx, val)
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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, addr).GetPower())
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// double sign again, same slashing period
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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, addr).GetJailed())
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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, val)
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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, addr).GetPower())
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// double sign again, new slashing period
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keeper.handleDoubleSign(ctx, val.Address(), 2, time.Unix(0, 0), amtInt)
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// should be jailed
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require.True(t, sk.Validator(ctx, addr).GetJailed())
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// unjail to measure power
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sk.Unjail(ctx, val)
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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, addr).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)
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sk = sk.WithValidatorHooks(keeper.ValidatorHooks())
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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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info, found := keeper.getValidatorSigningInfo(ctx, sdk.ConsAddress(val.Address()))
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require.False(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.SignedBlocksCounter)
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// default time.Time value
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var blankTime time.Time
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require.Equal(t, blankTime, 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, keeper.SignedBlocksWindow(ctx), info.SignedBlocksCounter)
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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.SignedBlocksCounter)
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// validator should be bonded still
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validator, _ := sk.GetValidatorByPubKey(ctx, 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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require.Equal(t, keeper.SignedBlocksWindow(ctx)-keeper.MinSignedPerWindow(ctx)-1, info.SignedBlocksCounter)
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// validator should have been jailed
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validator, _ = sk.GetValidatorByPubKey(ctx, val)
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require.Equal(t, sdk.Unbonding, validator.GetStatus())
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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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// validator should be rebonded now
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validator, _ = sk.GetValidatorByPubKey(ctx, 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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slashAmt := sdk.NewDec(amtInt).Mul(keeper.SlashFractionDowntime(ctx)).RoundInt64()
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require.Equal(t, amtInt-slashAmt, pool.BondedTokens.RoundInt64())
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// validator start height should 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, height, info.StartHeight)
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require.Equal(t, keeper.SignedBlocksWindow(ctx)-keeper.MinSignedPerWindow(ctx)-1, info.SignedBlocksCounter)
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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.GetValidatorByPubKey(ctx, 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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// 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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validator, _ = sk.GetValidatorByPubKey(ctx, 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)
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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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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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// 1000 first blocks not a validator
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ctx = ctx.WithBlockHeight(keeper.SignedBlocksWindow(ctx) + 1)
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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.SignedBlocksCounter)
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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.GetValidatorByPubKey(ctx, 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)
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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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// validator should have been jailed and slashed
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validator, _ := sk.GetValidatorByPubKey(ctx, 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.GetValidatorByPubKey(ctx, val)
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require.Equal(t, amtInt-1, validator.GetTokens().RoundInt64())
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}
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