test: remove dual-denom test paths and add invariants coverage #1185
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package erc20 | ||
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| import ( | ||
| "fmt" | ||
| "math/big" | ||
| "math/rand" | ||
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| "github.com/cosmos/evm/contracts" | ||
| "github.com/cosmos/evm/x/erc20/types" | ||
|
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| "cosmossdk.io/math" | ||
|
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| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
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| // TestRandomizedConvertRoundTripInvariant runs randomized convert sequences and | ||
| // asserts that sender coin/token balances always conserve value. | ||
| func (s *KeeperTestSuite) TestRandomizedConvertRoundTripInvariant() { | ||
| const ( | ||
| initialMint = int64(5_000) | ||
| steps = 50 | ||
| ) | ||
|
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| for _, seed := range []int64{1, 7, 42, 777, 2026} { | ||
| s.Run(fmt.Sprintf("seed-%d", seed), func() { | ||
| s.mintFeeCollector = true | ||
| defer func() { | ||
| s.mintFeeCollector = false | ||
| }() | ||
| s.SetupTest() | ||
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| contractAddr, err := s.setupRegisterERC20Pair(contractMinterBurner) | ||
| s.Require().NoError(err) | ||
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| senderAcc := s.keyring.GetAccAddr(0) | ||
| senderHex := s.keyring.GetAddr(0) | ||
| denom := types.CreateDenom(contractAddr.String()) | ||
| total := math.NewInt(initialMint) | ||
|
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| _, err = s.MintERC20Token(contractAddr, senderHex, big.NewInt(initialMint)) | ||
| s.Require().NoError(err) | ||
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| rng := rand.New(rand.NewSource(seed)) | ||
| erc20Keeper := s.network.App.GetErc20Keeper() | ||
| bankKeeper := s.network.App.GetBankKeeper() | ||
| erc20ABI := contracts.ERC20MinterBurnerDecimalsContract.ABI | ||
|
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| for i := 0; i < steps; i++ { | ||
| ctx := s.network.GetContext() | ||
| erc20Bal := erc20Keeper.BalanceOf(ctx, erc20ABI, contractAddr, senderHex) | ||
| coinBal := bankKeeper.GetBalance(ctx, senderAcc, denom).Amount | ||
|
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| combined := new(big.Int).Add(erc20Bal, coinBal.BigInt()) | ||
| s.Require().Equal(total.String(), combined.String(), "value should be conserved before step") | ||
|
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| convertFromERC20 := rng.Intn(2) == 0 | ||
| if erc20Bal.Sign() == 0 { | ||
| convertFromERC20 = false | ||
| } | ||
| if coinBal.IsZero() { | ||
| convertFromERC20 = true | ||
| } | ||
|
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| if convertFromERC20 { | ||
| max := erc20Bal.Int64() | ||
| amount := int64(rng.Intn(int(max)) + 1) | ||
| _, err = erc20Keeper.ConvertERC20( | ||
| ctx, | ||
| types.NewMsgConvertERC20(math.NewInt(amount), senderAcc, contractAddr, senderHex), | ||
| ) | ||
| s.Require().NoError(err) | ||
| } else { | ||
| max := coinBal.Int64() | ||
| amount := int64(rng.Intn(int(max)) + 1) | ||
| _, err = erc20Keeper.ConvertCoin( | ||
| ctx, | ||
| types.NewMsgConvertCoin(sdk.NewCoin(denom, math.NewInt(amount)), senderHex, senderAcc), | ||
| ) | ||
| s.Require().NoError(err) | ||
| } | ||
| } | ||
|
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| ctx := s.network.GetContext() | ||
| finalERC20Bal := erc20Keeper.BalanceOf(ctx, erc20ABI, contractAddr, senderHex) | ||
| finalCoinBal := bankKeeper.GetBalance(ctx, senderAcc, denom).Amount | ||
| finalCombined := new(big.Int).Add(finalERC20Bal, finalCoinBal.BigInt()) | ||
| s.Require().Equal(total.String(), finalCombined.String(), "value should be conserved after sequence") | ||
| }) | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package types_test | ||
|
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| import ( | ||
| "testing" | ||
|
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| testconstants "github.com/cosmos/evm/testutil/constants" | ||
| evmtypes "github.com/cosmos/evm/x/vm/types" | ||
|
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| "cosmossdk.io/math" | ||
|
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| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| ) | ||
|
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| func FuzzConvertCoinsDenomToExtendedDenomWithEvmParams(f *testing.F) { | ||
| f.Add(uint64(0), false) | ||
| f.Add(uint64(1), false) | ||
| f.Add(uint64(1_000_000_000_000_000_000), true) | ||
| f.Add(uint64(42), true) | ||
|
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| coinInfo := testconstants.ExampleChainCoinInfo[testconstants.ExampleChainID] | ||
| params := evmtypes.Params{ | ||
| EvmDenom: coinInfo.Denom, | ||
| ExtendedDenomOptions: &evmtypes.ExtendedDenomOptions{ | ||
| ExtendedDenom: coinInfo.ExtendedDenom, | ||
| }, | ||
| } | ||
|
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| f.Fuzz(func(t *testing.T, amount uint64, includeOtherDenom bool) { | ||
| input := sdk.NewCoins(sdk.NewCoin(coinInfo.Denom, math.NewIntFromUint64(amount))) | ||
| if includeOtherDenom { | ||
| input = input.Add(sdk.NewCoin("other", math.NewIntFromUint64(amount+1))).Sort() | ||
| } | ||
|
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| converted := evmtypes.ConvertCoinsDenomToExtendedDenomWithEvmParams(input, params) | ||
| convertedAgain := evmtypes.ConvertCoinsDenomToExtendedDenomWithEvmParams(converted, params) | ||
|
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| // Conversion should be idempotent. | ||
| if !convertedAgain.Equal(converted) { | ||
| t.Fatalf("expected idempotent conversion, got %s then %s", converted, convertedAgain) | ||
| } | ||
|
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| // EVM coin amount should be preserved under denom relabeling. | ||
| if converted.AmountOf(coinInfo.ExtendedDenom).String() != math.NewIntFromUint64(amount).String() { | ||
| t.Fatalf("unexpected converted amount: %s", converted.AmountOf(coinInfo.ExtendedDenom)) | ||
| } | ||
|
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| // Non-EVM denoms should be preserved. | ||
| if includeOtherDenom && converted.AmountOf("other").String() != math.NewIntFromUint64(amount+1).String() { | ||
| t.Fatalf("unexpected non-evm denom amount: %s", converted.AmountOf("other")) | ||
| } | ||
| }) | ||
| } | ||
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