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e2e: Ensure pre-funded test keys are also funded on the C-Chain #1880

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e2e: Ensure pre-funded test keys are also funded on the C-Chain #1880

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59 changes: 39 additions & 20 deletions tests/fixture/testnet/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,12 +8,17 @@ import (
"encoding/json"
"errors"
"fmt"
"math/big"
"os"
"strings"
"time"

"github.com/spf13/cast"

"github.com/ava-labs/coreth/core"
"github.com/ava-labs/coreth/params"
"github.com/ava-labs/coreth/plugin/evm"

"github.com/ava-labs/avalanchego/config"
"github.com/ava-labs/avalanchego/genesis"
"github.com/ava-labs/avalanchego/ids"
Expand Down Expand Up @@ -125,16 +130,17 @@ func (c *NetworkConfig) EnsureGenesis(networkID uint32, validatorIDs []ids.NodeI
return errNoKeysForGenesis
}

// Fund the provided keys
xChainBalances := []AddrAndBalance{}
// Ensure pre-funded keys have arbitrary large balances on both chains to support testing
xChainBalances := make(XChainBalanceMap, len(c.FundedKeys))
cChainBalances := make(core.GenesisAlloc, len(c.FundedKeys))
var cchainBalance big.Int
cchainBalance.Exp(big.NewInt(10), big.NewInt(30), nil)
for _, key := range c.FundedKeys {
xChainBalances = append(xChainBalances, AddrAndBalance{
key.Address(),
30 * units.MegaAvax, // Arbitrary large amount to support testing
})
xChainBalances[key.Address()] = 30 * units.MegaAvax
cChainBalances[evm.GetEthAddress(key)] = core.GenesisAccount{Balance: &cchainBalance}
}

genesis, err := NewTestGenesis(networkID, xChainBalances, validatorIDs)
genesis, err := NewTestGenesis(networkID, xChainBalances, cChainBalances, validatorIDs)
if err != nil {
return err
}
Expand Down Expand Up @@ -278,17 +284,16 @@ func (nc *NodeConfig) EnsureNodeID() error {
return nil
}

type AddrAndBalance struct {
Addr ids.ShortID
Balance uint64
}
// Helper type to simplify configuring X-Chain genesis balances
type XChainBalanceMap map[ids.ShortID]uint64

// Create a genesis struct valid for bootstrapping a test
// network. Note that many of the genesis fields (e.g. reward
// addresses) are randomly generated or hard-coded.
func NewTestGenesis(
networkID uint32,
xChainBalances []AddrAndBalance,
xChainBalances XChainBalanceMap,
cChainBalances core.GenesisAlloc,
validatorIDs []ids.NodeID,
) (*genesis.UnparsedConfig, error) {
// Validate inputs
Expand All @@ -299,7 +304,7 @@ func NewTestGenesis(
if len(validatorIDs) == 0 {
return nil, errMissingValidatorsForGenesis
}
if len(xChainBalances) == 0 {
if len(xChainBalances) == 0 || len(cChainBalances) == 0 {
return nil, errMissingBalancesForGenesis
}

Expand Down Expand Up @@ -343,22 +348,21 @@ func NewTestGenesis(
InitialStakedFunds: []string{stakeAddress},
InitialStakeDuration: 365 * 24 * 60 * 60, // 1 year
InitialStakeDurationOffset: 90 * 60, // 90 minutes
CChainGenesis: genesis.LocalConfig.CChainGenesis,
Message: "hello avalanche!",
}

// Set xchain balances
for _, addressBalance := range xChainBalances {
address, err := address.Format("X", constants.GetHRP(networkID), addressBalance.Addr[:])
// Set X-Chain balances
for xChainAddress, balance := range xChainBalances {
avaxAddr, err := address.Format("X", constants.GetHRP(networkID), xChainAddress[:])
if err != nil {
return nil, fmt.Errorf("failed to format balance address: %w", err)
return nil, fmt.Errorf("failed to format X-Chain address: %w", err)
}
config.Allocations = append(
config.Allocations,
genesis.UnparsedAllocation{
ETHAddr: ethAddress,
AVAXAddr: address,
InitialAmount: addressBalance.Balance,
AVAXAddr: avaxAddr,
InitialAmount: balance,
UnlockSchedule: []genesis.LockedAmount{
{
Amount: 20 * units.MegaAvax,
Expand All @@ -372,6 +376,21 @@ func NewTestGenesis(
)
}

// Define C-Chain genesis
cChainGenesis := &core.Genesis{
Config: &params.ChainConfig{
ChainID: big.NewInt(43112), // Arbitrary chain ID is arbitrary
},
Difficulty: big.NewInt(0), // Difficulty is a mandatory field
GasLimit: uint64(0x5f5e100), // Arbitrary gas limit is arbitrary
Alloc: cChainBalances,
}
cChainGenesisBytes, err := json.Marshal(cChainGenesis)
if err != nil {
return nil, fmt.Errorf("failed to marshal C-Chain genesis: %w", err)
}
config.CChainGenesis = string(cChainGenesisBytes)

// Give staking rewards for initial validators to a random address. Any testing of staking rewards
// will be easier to perform with nodes other than the initial validators since the timing of
// staking can be more easily controlled.
Expand Down