test: wrapped-a0gi-base precompile

app/test_common.go

@@ -49,6 +49,7 @@ import (
 	issuancekeeper "github.com/0glabs/0g-chain/x/issuance/keeper"
 	precisebankkeeper "github.com/0glabs/0g-chain/x/precisebank/keeper"
 	pricefeedkeeper "github.com/0glabs/0g-chain/x/pricefeed/keeper"
+	wrappeda0gibasekeeper "github.com/0glabs/0g-chain/x/wrapped-a0gi-base/keeper"
 )
 
 var (
@@ -118,6 +119,9 @@ func (tApp TestApp) GetEvmKeeper() *evmkeeper.Keeper                { return tAp
 func (tApp TestApp) GetFeeMarketKeeper() feemarketkeeper.Keeper     { return tApp.feeMarketKeeper }
 func (tApp TestApp) GetDASignersKeeper() dasignerskeeper.Keeper     { return tApp.dasignersKeeper }
 func (tApp TestApp) GetPrecisebankKeeper() precisebankkeeper.Keeper { return tApp.precisebankKeeper }
+func (tApp TestApp) GetWrappedA0GIBaseKeeper() wrappeda0gibasekeeper.Keeper {
+	return tApp.wrappeda0gibaseKeeper
+}
 
 func (tApp TestApp) GetKVStoreKey(key string) *storetypes.KVStoreKey {
 	return tApp.keys[key]

precompiles/interfaces/contracts/IWrappedA0GIBase.sol

@@ -20,7 +20,7 @@ interface IWrappedA0GIBase {
     /**
      * @dev get the wA0GI address.
      */
-    function getWA0GI() external returns (address);
+    function getWA0GI() external view returns (address);
 
     /**
      * @dev set the cap for a minter.
@@ -37,18 +37,17 @@ interface IWrappedA0GIBase {
     function minterSupply(address minter) external view returns (Supply memory);
 
     /**
-     * @dev mint a0gi to given address directly, add corresponding amount to minter's mint supply.
+     * @dev mint a0gi to this precompile, add corresponding amount to minter's mint supply.
      * If sender's final mint supply exceeds its mint cap, the transaction will revert.
-     * Can only be called by
-     *
+     * Can only be called by WA0GI.
      * @param minter minter address
-     * @param to recipient address
      * @param amount amount to mint
      */
-    function mint(address minter, address to, uint256 amount) external;
+    function mint(address minter, uint256 amount) external;
 
     /**
      * @dev burn given amount of a0gi on behalf of minter, reduce corresponding amount from sender's mint supply.
+     * Can only be called by WA0GI.
      * @param minter minter address
      * @param amount amount to burn
      */

precompiles/wrapped-a0gi-base/IWrappedA0GIBase.json

@@ -27,7 +27,7 @@
         "type": "address"
       }
     ],
-    "stateMutability": "nonpayable",
+    "stateMutability": "view",
     "type": "function"
   },
   {
@@ -37,11 +37,6 @@
         "name": "minter",
         "type": "address"
       },
-      {
-        "internalType": "address",
-        "name": "to",
-        "type": "address"
-      },
       {
         "internalType": "uint256",
         "name": "amount",

precompiles/wrapped-a0gi-base/contract.go

@@ -30,7 +30,7 @@ var (
 
 // Wrappeda0gibaseMetaData contains all meta data concerning the Wrappeda0gibase contract.
 var Wrappeda0gibaseMetaData = &bind.MetaData{
-	ABI: "[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getWA0GI\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"}],\"name\":\"minterSupply\",\"outputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"cap\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"total\",\"type\":\"uint256\"}],\"internalType\":\"structSupply\",\"name\":\"\",\"type\":\"tuple\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]",
+	ABI: "[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"getWA0GI\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"minter\",\"type\":\"address\"}],\"name\":\"minterSupply\",\"outputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"cap\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"total\",\"type\":\"uint256\"}],\"internalType\":\"structSupply\",\"name\":\"\",\"type\":\"tuple\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]",
 }
 
 // Wrappeda0gibaseABI is the input ABI used to generate the binding from.
@@ -179,6 +179,37 @@ func (_Wrappeda0gibase *Wrappeda0gibaseTransactorRaw) Transact(opts *bind.Transa
 	return _Wrappeda0gibase.Contract.contract.Transact(opts, method, params...)
 }
 
+// GetWA0GI is a free data retrieval call binding the contract method 0xa9283a7a.
+//
+// Solidity: function getWA0GI() view returns(address)
+func (_Wrappeda0gibase *Wrappeda0gibaseCaller) GetWA0GI(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _Wrappeda0gibase.contract.Call(opts, &out, "getWA0GI")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// GetWA0GI is a free data retrieval call binding the contract method 0xa9283a7a.
+//
+// Solidity: function getWA0GI() view returns(address)
+func (_Wrappeda0gibase *Wrappeda0gibaseSession) GetWA0GI() (common.Address, error) {
+	return _Wrappeda0gibase.Contract.GetWA0GI(&_Wrappeda0gibase.CallOpts)
+}
+
+// GetWA0GI is a free data retrieval call binding the contract method 0xa9283a7a.
+//
+// Solidity: function getWA0GI() view returns(address)
+func (_Wrappeda0gibase *Wrappeda0gibaseCallerSession) GetWA0GI() (common.Address, error) {
+	return _Wrappeda0gibase.Contract.GetWA0GI(&_Wrappeda0gibase.CallOpts)
+}
+
 // MinterSupply is a free data retrieval call binding the contract method 0x95609212.
 //
 // Solidity: function minterSupply(address minter) view returns((uint256,uint256))
@@ -231,44 +262,23 @@ func (_Wrappeda0gibase *Wrappeda0gibaseTransactorSession) Burn(minter common.Add
 	return _Wrappeda0gibase.Contract.Burn(&_Wrappeda0gibase.TransactOpts, minter, amount)
 }
 
-// GetWA0GI is a paid mutator transaction binding the contract method 0xa9283a7a.
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
 //
-// Solidity: function getWA0GI() returns(address)
-func (_Wrappeda0gibase *Wrappeda0gibaseTransactor) GetWA0GI(opts *bind.TransactOpts) (*types.Transaction, error) {
-	return _Wrappeda0gibase.contract.Transact(opts, "getWA0GI")
+// Solidity: function mint(address minter, uint256 amount) returns()
+func (_Wrappeda0gibase *Wrappeda0gibaseTransactor) Mint(opts *bind.TransactOpts, minter common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _Wrappeda0gibase.contract.Transact(opts, "mint", minter, amount)
 }
 
-// GetWA0GI is a paid mutator transaction binding the contract method 0xa9283a7a.
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
 //
-// Solidity: function getWA0GI() returns(address)
-func (_Wrappeda0gibase *Wrappeda0gibaseSession) GetWA0GI() (*types.Transaction, error) {
-	return _Wrappeda0gibase.Contract.GetWA0GI(&_Wrappeda0gibase.TransactOpts)
+// Solidity: function mint(address minter, uint256 amount) returns()
+func (_Wrappeda0gibase *Wrappeda0gibaseSession) Mint(minter common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _Wrappeda0gibase.Contract.Mint(&_Wrappeda0gibase.TransactOpts, minter, amount)
 }
 
-// GetWA0GI is a paid mutator transaction binding the contract method 0xa9283a7a.
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
 //
-// Solidity: function getWA0GI() returns(address)
-func (_Wrappeda0gibase *Wrappeda0gibaseTransactorSession) GetWA0GI() (*types.Transaction, error) {
-	return _Wrappeda0gibase.Contract.GetWA0GI(&_Wrappeda0gibase.TransactOpts)
-}
-
-// Mint is a paid mutator transaction binding the contract method 0xc6c3bbe6.
-//
-// Solidity: function mint(address minter, address to, uint256 amount) returns()
-func (_Wrappeda0gibase *Wrappeda0gibaseTransactor) Mint(opts *bind.TransactOpts, minter common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
-	return _Wrappeda0gibase.contract.Transact(opts, "mint", minter, to, amount)
-}
-
-// Mint is a paid mutator transaction binding the contract method 0xc6c3bbe6.
-//
-// Solidity: function mint(address minter, address to, uint256 amount) returns()
-func (_Wrappeda0gibase *Wrappeda0gibaseSession) Mint(minter common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
-	return _Wrappeda0gibase.Contract.Mint(&_Wrappeda0gibase.TransactOpts, minter, to, amount)
-}
-
-// Mint is a paid mutator transaction binding the contract method 0xc6c3bbe6.
-//
-// Solidity: function mint(address minter, address to, uint256 amount) returns()
-func (_Wrappeda0gibase *Wrappeda0gibaseTransactorSession) Mint(minter common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
-	return _Wrappeda0gibase.Contract.Mint(&_Wrappeda0gibase.TransactOpts, minter, to, amount)
+// Solidity: function mint(address minter, uint256 amount) returns()
+func (_Wrappeda0gibase *Wrappeda0gibaseTransactorSession) Mint(minter common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _Wrappeda0gibase.Contract.Mint(&_Wrappeda0gibase.TransactOpts, minter, amount)
 }

precompiles/wrapped-a0gi-base/errors.go

@@ -0,0 +1,5 @@
+package wrappeda0gibase
+
+const (
+	ErrSenderNotWA0GI = "sender is not WA0GI"
+)

precompiles/wrapped-a0gi-base/query.go

@@ -0,0 +1,38 @@
+package wrappeda0gibase
+
+import (
+	"math/big"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/vm"
+)
+
+func (w *WrappedA0giBasePrecompile) GetW0GI(ctx sdk.Context, _ *vm.EVM, method *abi.Method, args []interface{}) ([]byte, error) {
+	req, err := NewGetW0GIRequest(args)
+	if err != nil {
+		return nil, err
+	}
+	response, err := w.wrappeda0gibaseKeeper.GetWA0GI(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	return method.Outputs.Pack(common.BytesToAddress(response.Address))
+}
+
+func (w *WrappedA0giBasePrecompile) MinterSupply(ctx sdk.Context, _ *vm.EVM, method *abi.Method, args []interface{}) ([]byte, error) {
+	req, err := NewMinterSupplyRequest(args)
+	if err != nil {
+		return nil, err
+	}
+	response, err := w.wrappeda0gibaseKeeper.MinterSupply(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	supply := Supply{
+		Cap:   new(big.Int).SetBytes(response.Cap),
+		Total: new(big.Int).SetBytes(response.Supply),
+	}
+	return method.Outputs.Pack(supply)
+}

precompiles/wrapped-a0gi-base/query_test.go

@@ -0,0 +1,147 @@
+package wrappeda0gibase_test
+
+import (
+	"math/big"
+
+	wrappeda0gibaseprecompile "github.com/0glabs/0g-chain/precompiles/wrapped-a0gi-base"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ethereum/go-ethereum/common"
+)
+
+func (s *WrappedA0giBaseTestSuite) TestGetW0GI() {
+	method := wrappeda0gibaseprecompile.WrappedA0GIBaseFunctionGetWA0GI
+
+	testCases := []struct {
+		name        string
+		malleate    func() []byte
+		postCheck   func(bz []byte)
+		gas         uint64
+		expErr      bool
+		errContains string
+	}{
+		{
+			"success",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func(data []byte) {
+				out, err := s.abi.Methods[method].Outputs.Unpack(data)
+				s.Require().NoError(err, "failed to unpack output")
+				wa0gi := out[0].(common.Address)
+				s.Require().Equal(wa0gi, common.HexToAddress(types.DEFAULT_WRAPPED_A0GI))
+				// fmt.Println(wa0gi)
+			},
+			100000,
+			false,
+			"",
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			bz, err := s.runTx(tc.malleate(), s.signerOne, 10000000)
+
+			if tc.expErr {
+				s.Require().Error(err)
+				s.Require().Contains(err.Error(), tc.errContains)
+			} else {
+				s.Require().NoError(err)
+				s.Require().NotNil(bz)
+				tc.postCheck(bz)
+			}
+		})
+	}
+}
+
+func (s *WrappedA0giBaseTestSuite) TestMinterSupply() {
+	method := wrappeda0gibaseprecompile.WrappedA0GIBaseFunctionMinterSupply
+	govAccAddr := s.App.GetGovKeeper().GetGovernanceAccount(s.Ctx).GetAddress().String()
+
+	testCases := []struct {
+		name        string
+		malleate    func() []byte
+		postCheck   func(bz []byte)
+		gas         uint64
+		expErr      bool
+		errContains string
+	}{
+		{
+			"non-empty",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerOne.Addr,
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func(data []byte) {
+				out, err := s.abi.Methods[method].Outputs.Unpack(data)
+				s.Require().NoError(err, "failed to unpack output")
+				wa0gi := out[0].(wrappeda0gibaseprecompile.Supply)
+				s.Require().Equal(wa0gi.Cap, big.NewInt(8e18))
+				s.Require().Equal(wa0gi.Total, big.NewInt(1e18))
+				// fmt.Println(wa0gi)
+			},
+			100000,
+			false,
+			"",
+		}, {
+			"empty",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerTwo.Addr,
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func(data []byte) {
+				out, err := s.abi.Methods[method].Outputs.Unpack(data)
+				s.Require().NoError(err, "failed to unpack output")
+				supply := out[0].(wrappeda0gibaseprecompile.Supply)
+				s.Require().Equal(supply.Cap.Bytes(), big.NewInt(0).Bytes())
+				s.Require().Equal(supply.Total.Bytes(), big.NewInt(0).Bytes())
+				// fmt.Println(wa0gi)
+			},
+			100000,
+			false,
+			"",
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			s.wa0gibasekeeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+				Authority: govAccAddr,
+				Minter:    s.signerOne.Addr.Bytes(),
+				Cap:       big.NewInt(8e18).Bytes(),
+			})
+
+			s.wa0gibasekeeper.Mint(sdk.WrapSDKContext(s.Ctx), &types.MsgMint{
+				Minter: s.signerOne.Addr.Bytes(),
+				Amount: big.NewInt(1e18).Bytes(),
+			})
+
+			bz, err := s.runTx(tc.malleate(), s.signerOne, 10000000)
+
+			if tc.expErr {
+				s.Require().Error(err)
+				s.Require().Contains(err.Error(), tc.errContains)
+			} else {
+				s.Require().NoError(err)
+				s.Require().NotNil(bz)
+				tc.postCheck(bz)
+			}
+		})
+	}
+}

precompiles/wrapped-a0gi-base/tx.go

@@ -0,0 +1,62 @@
+package wrappeda0gibase
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/vm"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/evmos/ethermint/x/evm/statedb"
+)
+
+func (w *WrappedA0giBasePrecompile) Mint(
+	ctx sdk.Context,
+	evm *vm.EVM,
+	stateDB *statedb.StateDB,
+	contract *vm.Contract,
+	method *abi.Method,
+	args []interface{},
+) ([]byte, error) {
+	msg, err := NewMsgMint(args)
+	if err != nil {
+		return nil, err
+	}
+	// validation
+	wa0gi := common.BytesToAddress(w.wrappeda0gibaseKeeper.GetWA0GIAddress(ctx))
+	if contract.CallerAddress != wa0gi {
+		return nil, errors.New(ErrSenderNotWA0GI)
+	}
+	// execute
+	_, err = w.wrappeda0gibaseKeeper.Mint(sdk.WrapSDKContext(ctx), msg)
+	if err != nil {
+		return nil, err
+	}
+	return method.Outputs.Pack()
+}
+
+func (w *WrappedA0giBasePrecompile) Burn(
+	ctx sdk.Context,
+	evm *vm.EVM,
+	stateDB *statedb.StateDB,
+	contract *vm.Contract,
+	method *abi.Method,
+	args []interface{},
+) ([]byte, error) {
+	msg, err := NewMsgBurn(args)
+	if err != nil {
+		return nil, err
+	}
+	// validation
+	wa0gi := common.BytesToAddress(w.wrappeda0gibaseKeeper.GetWA0GIAddress(ctx))
+	if contract.CallerAddress != wa0gi {
+		return nil, errors.New(ErrSenderNotWA0GI)
+	}
+	// execute
+	_, err = w.wrappeda0gibaseKeeper.Burn(sdk.WrapSDKContext(ctx), msg)
+	if err != nil {
+		return nil, err
+	}
+	return method.Outputs.Pack()
+}

precompiles/wrapped-a0gi-base/tx_test.go

@@ -0,0 +1,218 @@
+package wrappeda0gibase_test
+
+import (
+	"fmt"
+	"math/big"
+
+	wrappeda0gibaseprecompile "github.com/0glabs/0g-chain/precompiles/wrapped-a0gi-base"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+func (s *WrappedA0giBaseTestSuite) TestMint() {
+	method := wrappeda0gibaseprecompile.WrappedA0GIBaseFunctionMint
+	govAccAddr := s.App.GetGovKeeper().GetGovernanceAccount(s.Ctx).GetAddress().String()
+
+	testCases := []struct {
+		name        string
+		malleate    func() []byte
+		postCheck   func()
+		gas         uint64
+		expErr      bool
+		errContains string
+		isSignerOne bool
+	}{
+		{
+			"success",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerOne.Addr,
+					big.NewInt(1e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {
+				supply, err := s.wa0gibasekeeper.MinterSupply(s.Ctx, &types.MinterSupplyRequest{
+					Address: s.signerOne.Addr.Bytes(),
+				})
+				s.Assert().NoError(err)
+				s.Require().Equal(supply.Cap, big.NewInt(8e18).Bytes())
+				s.Require().Equal(supply.Supply, big.NewInt(1e18).Bytes())
+				// fmt.Println(wa0gi)
+			},
+			100000,
+			false,
+			"",
+			true,
+		}, {
+			"fail",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerOne.Addr,
+					big.NewInt(9e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {},
+			100000,
+			true,
+			"insufficient mint cap",
+			true,
+		}, {
+			"invalid sender",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerTwo.Addr,
+					big.NewInt(9e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {},
+			100000,
+			true,
+			"sender is not WA0GI",
+			false,
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			fmt.Println(s.signerOne.Addr)
+			s.wa0gibasekeeper.SetWA0GIAddress(s.Ctx, s.signerOne.Addr)
+			s.wa0gibasekeeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+				Authority: govAccAddr,
+				Minter:    s.signerOne.Addr.Bytes(),
+				Cap:       big.NewInt(8e18).Bytes(),
+			})
+
+			var err error
+			if tc.isSignerOne {
+				_, err = s.runTx(tc.malleate(), s.signerOne, 10000000)
+			} else {
+				_, err = s.runTx(tc.malleate(), s.signerTwo, 10000000)
+			}
+
+			if tc.expErr {
+				s.Require().Error(err)
+				s.Require().Contains(err.Error(), tc.errContains)
+			} else {
+				s.Require().NoError(err)
+				tc.postCheck()
+			}
+		})
+	}
+}
+
+func (s *WrappedA0giBaseTestSuite) TestBurn() {
+	method := wrappeda0gibaseprecompile.WrappedA0GIBaseFunctionBurn
+	govAccAddr := s.App.GetGovKeeper().GetGovernanceAccount(s.Ctx).GetAddress().String()
+
+	testCases := []struct {
+		name        string
+		malleate    func() []byte
+		postCheck   func()
+		gas         uint64
+		expErr      bool
+		errContains string
+		isSignerOne bool
+	}{
+		{
+			"success",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerOne.Addr,
+					big.NewInt(1e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {
+				supply, err := s.wa0gibasekeeper.MinterSupply(s.Ctx, &types.MinterSupplyRequest{
+					Address: s.signerOne.Addr.Bytes(),
+				})
+				s.Assert().NoError(err)
+				s.Require().Equal(supply.Cap, big.NewInt(8e18).Bytes())
+				s.Require().Equal(supply.Supply, big.NewInt(3e18).Bytes())
+				// fmt.Println(wa0gi)
+			},
+			100000,
+			false,
+			"",
+			true,
+		}, {
+			"fail",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerOne.Addr,
+					big.NewInt(9e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {},
+			100000,
+			true,
+			"insufficient mint supply",
+			true,
+		}, {
+			"invalid sender",
+			func() []byte {
+				input, err := s.abi.Pack(
+					method,
+					s.signerTwo.Addr,
+					big.NewInt(9e18),
+				)
+				s.Assert().NoError(err)
+				return input
+			},
+			func() {},
+			100000,
+			true,
+			"sender is not WA0GI",
+			false,
+		},
+	}
+
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			fmt.Println(s.signerOne.Addr)
+			s.wa0gibasekeeper.SetWA0GIAddress(s.Ctx, s.signerOne.Addr)
+			s.wa0gibasekeeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+				Authority: govAccAddr,
+				Minter:    s.signerOne.Addr.Bytes(),
+				Cap:       big.NewInt(8e18).Bytes(),
+			})
+			s.wa0gibasekeeper.Mint(sdk.WrapSDKContext(s.Ctx), &types.MsgMint{
+				Minter: s.signerOne.Addr.Bytes(),
+				Amount: big.NewInt(4e18).Bytes(),
+			})
+
+			var err error
+			if tc.isSignerOne {
+				_, err = s.runTx(tc.malleate(), s.signerOne, 10000000)
+			} else {
+				_, err = s.runTx(tc.malleate(), s.signerTwo, 10000000)
+			}
+
+			if tc.expErr {
+				s.Require().Error(err)
+				s.Require().Contains(err.Error(), tc.errContains)
+			} else {
+				s.Require().NoError(err)
+				tc.postCheck()
+			}
+		})
+	}
+}

precompiles/wrapped-a0gi-base/types.go

@@ -1,8 +1,51 @@
 package wrappeda0gibase
 
-import "math/big"
+import (
+	"fmt"
+	"math/big"
+
+	precompiles_common "github.com/0glabs/0g-chain/precompiles/common"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	"github.com/ethereum/go-ethereum/common"
+)
 
 type Supply = struct {
 	Cap   *big.Int "json:\"cap\""
 	Total *big.Int "json:\"total\""
 }
+
+func NewGetW0GIRequest(args []interface{}) (*types.GetWA0GIRequest, error) {
+	if len(args) != 0 {
+		return nil, fmt.Errorf(precompiles_common.ErrInvalidNumberOfArgs, 0, len(args))
+	}
+	return &types.GetWA0GIRequest{}, nil
+}
+
+func NewMinterSupplyRequest(args []interface{}) (*types.MinterSupplyRequest, error) {
+	if len(args) != 1 {
+		return nil, fmt.Errorf(precompiles_common.ErrInvalidNumberOfArgs, 1, len(args))
+	}
+	return &types.MinterSupplyRequest{
+		Address: args[0].(common.Address).Bytes(),
+	}, nil
+}
+
+func NewMsgMint(args []interface{}) (*types.MsgMint, error) {
+	if len(args) != 2 {
+		return nil, fmt.Errorf(precompiles_common.ErrInvalidNumberOfArgs, 1, len(args))
+	}
+	return &types.MsgMint{
+		Minter: args[0].(common.Address).Bytes(),
+		Amount: args[1].(*big.Int).Bytes(),
+	}, nil
+}
+
+func NewMsgBurn(args []interface{}) (*types.MsgBurn, error) {
+	if len(args) != 2 {
+		return nil, fmt.Errorf(precompiles_common.ErrInvalidNumberOfArgs, 1, len(args))
+	}
+	return &types.MsgBurn{
+		Minter: args[0].(common.Address).Bytes(),
+		Amount: args[1].(*big.Int).Bytes(),
+	}, nil
+}

precompiles/wrapped-a0gi-base/wrapped_a0gi_base.go

@@ -5,7 +5,7 @@ import (
 
 	precompiles_common "github.com/0glabs/0g-chain/precompiles/common"
 	wrappeda0gibasekeeper "github.com/0glabs/0g-chain/x/wrapped-a0gi-base/keeper"
-	"github.com/cosmos/cosmos-sdk/store/types"
+	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	"github.com/ethereum/go-ethereum/accounts/abi"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/vm"
@@ -13,6 +13,13 @@ import (
 
 const (
 	PrecompileAddress = "0x0000000000000000000000000000000000001002"
+
+	// txs
+	WrappedA0GIBaseFunctionMint = "mint"
+	WrappedA0GIBaseFunctionBurn = "burn"
+	// queries
+	WrappedA0GIBaseFunctionGetWA0GI     = "getWA0GI"
+	WrappedA0GIBaseFunctionMinterSupply = "minterSupply"
 )
 
 var _ vm.PrecompiledContract = &WrappedA0giBasePrecompile{}
@@ -25,17 +32,23 @@ type WrappedA0giBasePrecompile struct {
 
 // Abi implements common.PrecompileCommon.
 func (w *WrappedA0giBasePrecompile) Abi() *abi.ABI {
-	panic("unimplemented")
+	return &w.abi
 }
 
 // IsTx implements common.PrecompileCommon.
-func (w *WrappedA0giBasePrecompile) IsTx(string) bool {
-	panic("unimplemented")
+func (w *WrappedA0giBasePrecompile) IsTx(method string) bool {
+	switch method {
+	case WrappedA0GIBaseFunctionMint,
+		WrappedA0GIBaseFunctionBurn:
+		return true
+	default:
+		return false
+	}
 }
 
 // KVGasConfig implements common.PrecompileCommon.
-func (w *WrappedA0giBasePrecompile) KVGasConfig() types.GasConfig {
-	panic("unimplemented")
+func (w *WrappedA0giBasePrecompile) KVGasConfig() storetypes.GasConfig {
+	return storetypes.KVGasConfig()
 }
 
 // Address implements vm.PrecompiledContract.
@@ -45,7 +58,7 @@ func (w *WrappedA0giBasePrecompile) Address() common.Address {
 
 // RequiredGas implements vm.PrecompiledContract.
 func (w *WrappedA0giBasePrecompile) RequiredGas(input []byte) uint64 {
-	panic("unimplemented")
+	return 0
 }
 
 func NewWrappedA0giBasePrecompile(wrappeda0gibaseKeeper wrappeda0gibasekeeper.Keeper) (*WrappedA0giBasePrecompile, error) {
@@ -61,5 +74,33 @@ func NewWrappedA0giBasePrecompile(wrappeda0gibaseKeeper wrappeda0gibasekeeper.Ke
 
 // Run implements vm.PrecompiledContract.
 func (w *WrappedA0giBasePrecompile) Run(evm *vm.EVM, contract *vm.Contract, readonly bool) ([]byte, error) {
-	panic("unimplemented")
+	ctx, stateDB, method, initialGas, args, err := precompiles_common.InitializePrecompileCall(w, evm, contract, readonly)
+	if err != nil {
+		return nil, err
+	}
+
+	var bz []byte
+	switch method.Name {
+	// queries
+	case WrappedA0GIBaseFunctionGetWA0GI:
+		bz, err = w.GetW0GI(ctx, evm, method, args)
+	case WrappedA0GIBaseFunctionMinterSupply:
+		bz, err = w.MinterSupply(ctx, evm, method, args)
+	// txs
+	case WrappedA0GIBaseFunctionMint:
+		bz, err = w.Mint(ctx, evm, stateDB, contract, method, args)
+	case WrappedA0GIBaseFunctionBurn:
+		bz, err = w.Burn(ctx, evm, stateDB, contract, method, args)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	cost := ctx.GasMeter().GasConsumed() - initialGas
+
+	if !contract.UseGas(cost) {
+		return nil, vm.ErrOutOfGas
+	}
+	return bz, nil
 }

precompiles/wrapped-a0gi-base/wrapped_a0gi_base_test.go

@@ -0,0 +1,80 @@
+package wrappeda0gibase_test
+
+import (
+	"math/big"
+	"strings"
+	"testing"
+
+	"github.com/0glabs/0g-chain/precompiles/testutil"
+	wrappeda0gibaseprecompile "github.com/0glabs/0g-chain/precompiles/wrapped-a0gi-base"
+	wrappeda0gibasekeeper "github.com/0glabs/0g-chain/x/wrapped-a0gi-base/keeper"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/evmos/ethermint/x/evm/statedb"
+	evmtypes "github.com/evmos/ethermint/x/evm/types"
+	"github.com/stretchr/testify/suite"
+)
+
+type WrappedA0giBaseTestSuite struct {
+	testutil.PrecompileTestSuite
+
+	abi             abi.ABI
+	addr            common.Address
+	wa0gibasekeeper wrappeda0gibasekeeper.Keeper
+	wa0gibase       *wrappeda0gibaseprecompile.WrappedA0giBasePrecompile
+	signerOne       *testutil.TestSigner
+	signerTwo       *testutil.TestSigner
+}
+
+func (suite *WrappedA0giBaseTestSuite) SetupTest() {
+	suite.PrecompileTestSuite.SetupTest()
+
+	suite.wa0gibasekeeper = suite.App.GetWrappedA0GIBaseKeeper()
+
+	suite.addr = common.HexToAddress(wrappeda0gibaseprecompile.PrecompileAddress)
+
+	precompiles := suite.EvmKeeper.GetPrecompiles()
+	precompile, ok := precompiles[suite.addr]
+	suite.Assert().EqualValues(ok, true)
+
+	suite.wa0gibase = precompile.(*wrappeda0gibaseprecompile.WrappedA0giBasePrecompile)
+
+	suite.signerOne = suite.GenSigner()
+	suite.signerTwo = suite.GenSigner()
+
+	abi, err := abi.JSON(strings.NewReader(wrappeda0gibaseprecompile.Wrappeda0gibaseABI))
+	suite.Assert().NoError(err)
+	suite.abi = abi
+}
+
+func (suite *WrappedA0giBaseTestSuite) runTx(input []byte, signer *testutil.TestSigner, gas uint64) ([]byte, error) {
+	contract := vm.NewPrecompile(vm.AccountRef(signer.Addr), vm.AccountRef(suite.addr), big.NewInt(0), gas)
+	contract.Input = input
+
+	msgEthereumTx := evmtypes.NewTx(suite.EvmKeeper.ChainID(), 0, &suite.addr, big.NewInt(0), gas, big.NewInt(0), big.NewInt(0), big.NewInt(0), input, nil)
+	msgEthereumTx.From = signer.HexAddr
+	err := msgEthereumTx.Sign(suite.EthSigner, signer.Signer)
+	suite.Assert().NoError(err, "failed to sign Ethereum message")
+
+	proposerAddress := suite.Ctx.BlockHeader().ProposerAddress
+	cfg, err := suite.EvmKeeper.EVMConfig(suite.Ctx, proposerAddress, suite.EvmKeeper.ChainID())
+	suite.Assert().NoError(err, "failed to instantiate EVM config")
+
+	msg, err := msgEthereumTx.AsMessage(suite.EthSigner, big.NewInt(0))
+	suite.Assert().NoError(err, "failed to instantiate Ethereum message")
+
+	evm := suite.EvmKeeper.NewEVM(suite.Ctx, msg, cfg, nil, suite.Statedb)
+	precompiles := suite.EvmKeeper.GetPrecompiles()
+	evm.WithPrecompiles(precompiles, []common.Address{suite.addr})
+
+	bz, err := suite.wa0gibase.Run(evm, contract, false)
+	if err == nil {
+		evm.StateDB.(*statedb.StateDB).Commit()
+	}
+	return bz, err
+}
+
+func TestWrappedA0giBaseTestSuite(t *testing.T) {
+	suite.Run(t, new(WrappedA0giBaseTestSuite))
+}

proto/zgc/wrappeda0gibase/tx.proto

@@ -33,8 +33,7 @@ message MsgSetMintCapResponse {}
 
 message MsgMint {
   bytes minter = 1;
-  bytes to = 2;
-  bytes amount = 3; // big endian
+  bytes amount = 2; // big endian
 }
 
 message MsgMintResponse {}

x/wrapped-a0gi-base/cli/query.go

@@ -11,7 +11,7 @@ import (
 func GetQueryCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:                        types.ModuleName,
-		Short:                      "Querying commands for the dasigners module",
+		Short:                      "Querying commands for the wrapped a0gi base module",
 		DisableFlagParsing:         true,
 		SuggestionsMinimumDistance: 2,
 		RunE:                       client.ValidateCmd,

x/wrapped-a0gi-base/genesis_test.go

@@ -0,0 +1,67 @@
+package wrappeda0gibase_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+
+	tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
+
+	"github.com/0glabs/0g-chain/app"
+	wrappeda0gibase "github.com/0glabs/0g-chain/x/wrapped-a0gi-base"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/testutil"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+)
+
+type GenesisTestSuite struct {
+	testutil.Suite
+}
+
+func (suite *GenesisTestSuite) TestInitGenesis() {
+	// Most genesis validation tests are located in the types directory. The 'invalid' test cases are
+	// randomly selected subset of those tests.
+	testCases := []struct {
+		name       string
+		genState   *types.GenesisState
+		expectPass bool
+	}{
+		{
+			name:       "default genesis",
+			genState:   types.DefaultGenesisState(),
+			expectPass: true,
+		},
+	}
+	for _, tc := range testCases {
+		suite.Run(tc.name, func() {
+			// Setup (note: suite.SetupTest is not run before every suite.Run)
+			suite.App = app.NewTestApp()
+			suite.Keeper = suite.App.GetWrappedA0GIBaseKeeper()
+			suite.Ctx = suite.App.NewContext(true, tmproto.Header{})
+
+			// Run
+			var exportedGenState *types.GenesisState
+			run := func() {
+				wrappeda0gibase.InitGenesis(suite.Ctx, suite.Keeper, *tc.genState)
+				exportedGenState = wrappeda0gibase.ExportGenesis(suite.Ctx, suite.Keeper)
+			}
+			if tc.expectPass {
+				suite.Require().NotPanics(run)
+			} else {
+				suite.Require().Panics(run)
+			}
+
+			// Check
+			if tc.expectPass {
+				expectedJson, err := suite.App.AppCodec().MarshalJSON(tc.genState)
+				suite.Require().NoError(err)
+				actualJson, err := suite.App.AppCodec().MarshalJSON(exportedGenState)
+				suite.Require().NoError(err)
+				suite.Equal(expectedJson, actualJson)
+			}
+		})
+	}
+}
+
+func TestGenesisTestSuite(t *testing.T) {
+	suite.Run(t, new(GenesisTestSuite))
+}

x/wrapped-a0gi-base/keeper/keeper_test.go

@@ -0,0 +1,40 @@
+package keeper_test
+
+import (
+	"testing"
+
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/testutil"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/stretchr/testify/suite"
+)
+
+type KeeperTestSuite struct {
+	testutil.Suite
+}
+
+func (s *KeeperTestSuite) TestSetWA0GIAddress() {
+	testCases := []struct {
+		name  string
+		wa0gi common.Address
+	}{
+		{
+			name:  "zero address",
+			wa0gi: common.HexToAddress("0x0000000000000000000000000000000000000000"),
+		},
+	}
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			s.Keeper.SetWA0GIAddress(s.Ctx, tc.wa0gi)
+			response, err := s.Keeper.GetWA0GI(s.Ctx, &types.GetWA0GIRequest{})
+			s.Require().NoError(err)
+			s.Require().Equal(common.BytesToAddress(response.Address), tc.wa0gi)
+		})
+	}
+}
+
+func TestKeeperSuite(t *testing.T) {
+	suite.Run(t, new(KeeperTestSuite))
+}

x/wrapped-a0gi-base/keeper/msg_server.go

@@ -18,10 +18,6 @@ var _ types.MsgServer = &Keeper{}
 func (k Keeper) Burn(goCtx context.Context, msg *types.MsgBurn) (*types.MsgBurnResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 	minter := common.BytesToAddress(msg.Minter)
-	cap, err := k.getMinterCap(ctx, minter)
-	if err != nil {
-		return nil, err
-	}
 	supply, err := k.getMinterSupply(ctx, minter)
 	if err != nil {
 		return nil, err
@@ -29,21 +25,17 @@ func (k Keeper) Burn(goCtx context.Context, msg *types.MsgBurn) (*types.MsgBurnR
 	amount := new(big.Int).SetBytes(msg.Amount)
 	// check & update mint supply
 	supply.Sub(supply, amount)
-	if supply.Cmp(cap) > 0 {
-		return nil, types.ErrInsufficientMintCap
+	if supply.Cmp(big.NewInt(0)) < 0 {
+		return nil, types.ErrInsufficientMintSupply
+	}
+	// burn
+	c := sdk.NewCoin(precisebanktypes.ExtendedCoinDenom, sdk.NewIntFromBigInt(amount))
+	if err = k.pbkeeper.BurnCoins(ctx, types.ModuleName, sdk.NewCoins(c)); err != nil {
+		return nil, err
 	}
 	if err = k.setMinterSupply(ctx, minter, supply); err != nil {
 		return nil, err
 	}
-	// transfer & burn
-	c := sdk.NewCoin(precisebanktypes.ExtendedCoinDenom, sdk.NewIntFromBigInt(amount))
-	burner := sdk.AccAddress(minter.Bytes())
-	if err = k.pbkeeper.SendCoinsFromAccountToModule(ctx, burner, types.ModuleName, sdk.NewCoins(c)); err != nil {
-		return nil, err
-	}
-	if err = k.pbkeeper.BurnCoins(ctx, types.ModuleName, sdk.NewCoins(c)); err != nil {
-		return nil, err
-	}
 	return &types.MsgBurnResponse{}, nil
 }
 
@@ -65,16 +57,12 @@ func (k Keeper) Mint(goCtx context.Context, msg *types.MsgMint) (*types.MsgMintR
 	if supply.Cmp(cap) > 0 {
 		return nil, types.ErrInsufficientMintCap
 	}
-	if err = k.setMinterSupply(ctx, minter, supply); err != nil {
-		return nil, err
-	}
-	// mint & transfer
+	// mint
 	c := sdk.NewCoin(precisebanktypes.ExtendedCoinDenom, sdk.NewIntFromBigInt(amount))
 	if err = k.pbkeeper.MintCoins(ctx, types.ModuleName, sdk.NewCoins(c)); err != nil {
 		return nil, err
 	}
-	recipient := sdk.AccAddress(common.BytesToAddress(msg.To).Bytes())
-	if err = k.pbkeeper.SendCoinsFromModuleToAccount(ctx, types.ModuleName, recipient, sdk.NewCoins(c)); err != nil {
+	if err = k.setMinterSupply(ctx, minter, supply); err != nil {
 		return nil, err
 	}
 	return &types.MsgMintResponse{}, nil

x/wrapped-a0gi-base/keeper/msg_server_test.go

@@ -0,0 +1,284 @@
+package keeper_test
+
+import (
+	"fmt"
+	"math/big"
+	"testing"
+
+	precisebanktypes "github.com/0glabs/0g-chain/x/precisebank/types"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/testutil"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/stretchr/testify/suite"
+)
+
+type MsgServerTestSuite struct {
+	testutil.Suite
+}
+
+func (s *MsgServerTestSuite) TestSetWA0GI() {
+	govAccAddr := s.GovKeeper.GetGovernanceAccount(s.Ctx).GetAddress().String()
+	testCases := []struct {
+		name      string
+		req       *types.MsgSetWA0GI
+		expectErr bool
+		errMsg    string
+	}{
+		{
+			name: "invalid signer",
+			req: &types.MsgSetWA0GI{
+				Authority: s.Addresses[0].String(),
+				Address:   common.HexToAddress("0x0000000000000000000000000000000000000001").Bytes(),
+			},
+			expectErr: true,
+			errMsg:    "expected gov account as only signer for proposal message",
+		},
+		{
+			name: "success",
+			req: &types.MsgSetWA0GI{
+				Authority: govAccAddr,
+				Address:   common.HexToAddress("0x0000000000000000000000000000000000000001").Bytes(),
+			},
+			expectErr: false,
+		},
+	}
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			_, err := s.Keeper.SetWA0GI(sdk.WrapSDKContext(s.Ctx), tc.req)
+			if tc.expectErr {
+				s.Require().Error(err)
+				s.Require().Contains(err.Error(), tc.errMsg)
+			} else {
+				s.Require().NoError(err)
+				response, err := s.Keeper.GetWA0GI(s.Ctx, &types.GetWA0GIRequest{})
+				s.Require().NoError(err)
+				s.Require().Equal(response.Address, tc.req.Address)
+			}
+		})
+	}
+}
+
+func (s *MsgServerTestSuite) TestSetMinterCap() {
+	testCases := []struct {
+		name string
+		caps []struct {
+			account common.Address
+			cap     *big.Int
+		}
+	}{
+		{
+			name: "success",
+			caps: []struct {
+				account common.Address
+				cap     *big.Int
+			}{
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000000"),
+					cap:     big.NewInt(100000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000001"),
+					cap:     big.NewInt(200000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000002"),
+					cap:     big.NewInt(300000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000003"),
+					cap:     big.NewInt(400000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000002"),
+					cap:     big.NewInt(500000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000001"),
+					cap:     big.NewInt(600000),
+				},
+				{
+					account: common.HexToAddress("0x0000000000000000000000000000000000000000"),
+					cap:     big.NewInt(700000),
+				},
+			},
+		},
+	}
+	s.Run("invalid authority", func() {
+		s.SetupTest()
+		_, err := s.Keeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+			Authority: s.Addresses[0].String(),
+			Minter:    common.HexToAddress("0x0000000000000000000000000000000000000000").Bytes(),
+			Cap:       big.NewInt(600000).Bytes(),
+		})
+		s.Require().Error(err)
+		s.Require().Contains(err.Error(), "expected gov account as only signer for proposal message")
+	})
+	govAccAddr := s.GovKeeper.GetGovernanceAccount(s.Ctx).GetAddress().String()
+	for _, tc := range testCases {
+		s.Run(tc.name, func() {
+			s.SetupTest()
+
+			c := make(map[common.Address]*big.Int)
+			for _, cap := range tc.caps {
+				_, err := s.Keeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+					Authority: govAccAddr,
+					Minter:    cap.account.Bytes(),
+					Cap:       cap.cap.Bytes(),
+				})
+				s.Require().NoError(err)
+				response, err := s.Keeper.MinterSupply(s.Ctx, &types.MinterSupplyRequest{
+					Address: cap.account.Bytes(),
+				})
+				s.Require().NoError(err)
+				s.Require().Equal(new(big.Int).SetBytes(response.Cap), cap.cap)
+				c[cap.account] = cap.cap
+			}
+			for account, cap := range c {
+				response, err := s.Keeper.MinterSupply(s.Ctx, &types.MinterSupplyRequest{
+					Address: account.Bytes(),
+				})
+				s.Require().NoError(err)
+				s.Require().Equal(new(big.Int).SetBytes(response.Cap), cap)
+			}
+		})
+	}
+}
+
+type MintBurn struct {
+	IsMint  bool
+	Minter  common.Address
+	Amount  *big.Int
+	Success bool
+}
+
+func (s *MsgServerTestSuite) TestSetMintBurn() {
+	precisebankKeeper := s.App.GetPrecisebankKeeper()
+	accountKeeper := s.App.GetAccountKeeper()
+	moduleAcc := accountKeeper.GetModuleAccount(s.Ctx, types.ModuleName).GetAddress()
+	govAccAddr := s.GovKeeper.GetGovernanceAccount(s.Ctx).GetAddress().String()
+
+	minter1 := common.HexToAddress("0x0000000000000000000000000000000000000001")
+	minter2 := common.HexToAddress("0x0000000000000000000000000000000000000002")
+
+	// set mint cap of minter 1 to 8 a0gi
+	_, err := s.Keeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+		Authority: govAccAddr,
+		Minter:    minter1.Bytes(),
+		Cap:       big.NewInt(8e18).Bytes(),
+	})
+	s.Require().NoError(err)
+	// set mint cap of minter 2 to 5 a0gi
+	_, err = s.Keeper.SetMinterCap(sdk.WrapSDKContext(s.Ctx), &types.MsgSetMintCap{
+		Authority: govAccAddr,
+		Minter:    minter2.Bytes(),
+		Cap:       big.NewInt(5e18).Bytes(),
+	})
+	s.Require().NoError(err)
+
+	testCases := []MintBurn{
+		// #0, failed burn
+		{
+			IsMint:  false,
+			Minter:  minter1,
+			Amount:  big.NewInt(1e18),
+			Success: false,
+		},
+		// #1, mint 5 a0gi by minter 1
+		{
+			IsMint:  true,
+			Minter:  minter1,
+			Amount:  big.NewInt(5e18),
+			Success: true,
+		},
+		// #2, burn 0.5 a0gi by minter 1
+		{
+			IsMint:  false,
+			Minter:  minter1,
+			Amount:  big.NewInt(5e17),
+			Success: true,
+		},
+		// #3, mint 0.7 a0gi by minter 2
+		{
+			IsMint:  true,
+			Minter:  minter2,
+			Amount:  big.NewInt(7e17),
+			Success: true,
+		},
+		// #4, mint 2 a0gi by minter 2
+		{
+			IsMint:  true,
+			Minter:  minter2,
+			Amount:  big.NewInt(2e18),
+			Success: true,
+		},
+		// #5, burn 0.3 a0gi by minter 2
+		{
+			IsMint:  false,
+			Minter:  minter1,
+			Amount:  big.NewInt(3e17),
+			Success: true,
+		},
+		// #6, failed to mint 4 a0gi by minter 1
+		{
+			IsMint:  true,
+			Minter:  minter1,
+			Amount:  big.NewInt(4e18),
+			Success: false,
+		},
+		// #7, mint 3.5 a0gi by minter 1
+		{
+			IsMint:  true,
+			Minter:  minter1,
+			Amount:  big.NewInt(3e18 + 5e17),
+			Success: true,
+		},
+	}
+	minted := big.NewInt(0)
+	supplied := make(map[common.Address]*big.Int)
+	for id, c := range testCases {
+		fmt.Println(id)
+		if c.IsMint {
+			_, err = s.Keeper.Mint(sdk.WrapSDKContext(s.Ctx), &types.MsgMint{
+				Minter: c.Minter.Bytes(),
+				Amount: c.Amount.Bytes(),
+			})
+		} else {
+			_, err = s.Keeper.Burn(sdk.WrapSDKContext(s.Ctx), &types.MsgBurn{
+				Minter: c.Minter.Bytes(),
+				Amount: c.Amount.Bytes(),
+			})
+		}
+		if c.Success {
+			if c.IsMint {
+				minted.Add(minted, c.Amount)
+				if amt, ok := supplied[c.Minter]; ok {
+					amt.Add(amt, c.Amount)
+				} else {
+					supplied[c.Minter] = new(big.Int).Set(c.Amount)
+				}
+			} else {
+				minted.Sub(minted, c.Amount)
+				if amt, ok := supplied[c.Minter]; ok {
+					amt.Sub(amt, c.Amount)
+				} else {
+					supplied[c.Minter] = new(big.Int).Set(c.Amount)
+				}
+			}
+			s.Require().NoError(err)
+			response, err := s.Keeper.MinterSupply(s.Ctx, &types.MinterSupplyRequest{
+				Address: c.Minter.Bytes(),
+			})
+			s.Require().NoError(err)
+			s.Require().Equal(supplied[c.Minter].Bytes(), response.Supply)
+		} else {
+			s.Require().Error(err)
+		}
+		coins := precisebankKeeper.GetBalance(s.Ctx, moduleAcc, precisebanktypes.ExtendedCoinDenom)
+		s.Require().Equal(coins.Amount.BigInt(), minted)
+	}
+}
+
+func TestMsgServerSuite(t *testing.T) {
+	suite.Run(t, new(MsgServerTestSuite))
+}

x/wrapped-a0gi-base/testutil/suite.go

@@ -0,0 +1,66 @@
+package testutil
+
+import (
+	"strings"
+
+	tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/stretchr/testify/suite"
+
+	"github.com/0glabs/0g-chain/app"
+	"github.com/0glabs/0g-chain/chaincfg"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/keeper"
+	"github.com/0glabs/0g-chain/x/wrapped-a0gi-base/types"
+	govkeeper "github.com/cosmos/cosmos-sdk/x/gov/keeper"
+	stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
+	"github.com/evmos/ethermint/crypto/ethsecp256k1"
+)
+
+// Suite implements a test suite for the module integration tests
+type Suite struct {
+	suite.Suite
+
+	Keeper        keeper.Keeper
+	StakingKeeper *stakingkeeper.Keeper
+	GovKeeper     govkeeper.Keeper
+	App           app.TestApp
+	Ctx           sdk.Context
+	QueryClient   types.QueryClient
+	Addresses     []sdk.AccAddress
+}
+
+// SetupTest instantiates a new app, keepers, and sets suite state
+func (suite *Suite) SetupTest() {
+	chaincfg.SetSDKConfig()
+	suite.App = app.NewTestApp()
+	suite.App.InitializeFromGenesisStates()
+	suite.Keeper = suite.App.GetWrappedA0GIBaseKeeper()
+	suite.GovKeeper = suite.App.GetGovKeeper()
+	suite.StakingKeeper = suite.App.GetStakingKeeper()
+
+	// make block header
+	privkey, _ := ethsecp256k1.GenerateKey()
+	consAddress := sdk.ConsAddress(privkey.PubKey().Address())
+	key, err := privkey.ToECDSA()
+	suite.Assert().NoError(err)
+	hexAddr := strings.ToLower(crypto.PubkeyToAddress(key.PublicKey).Hex()[2:])
+	valAddr, err := sdk.ValAddressFromHex(hexAddr)
+	suite.Assert().NoError(err)
+	suite.Ctx = suite.App.NewContext(true, tmproto.Header{Height: 1, ChainID: app.TestChainId, ProposerAddress: consAddress})
+	newValidator, err := stakingtypes.NewValidator(valAddr, privkey.PubKey(), stakingtypes.Description{})
+	suite.Assert().NoError(err)
+	err = suite.StakingKeeper.SetValidatorByConsAddr(suite.Ctx, newValidator)
+	suite.Assert().NoError(err)
+	suite.StakingKeeper.SetValidator(suite.Ctx, newValidator)
+
+	_, accAddresses := app.GeneratePrivKeyAddressPairs(10)
+	suite.Addresses = accAddresses
+
+	// Set query client
+	queryHelper := suite.App.NewQueryServerTestHelper(suite.Ctx)
+	queryHandler := suite.Keeper
+	types.RegisterQueryServer(queryHelper, queryHandler)
+	suite.QueryClient = types.NewQueryClient(queryHelper)
+}

x/wrapped-a0gi-base/testutil/types.go

@@ -0,0 +1,25 @@
+package testutil
+
+import (
+	"testing"
+
+	sdkmath "cosmossdk.io/math"
+	"github.com/cosmos/cosmos-sdk/codec"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/gogo/protobuf/proto"
+	"github.com/stretchr/testify/assert"
+)
+
+// Avoid cluttering test cases with long function names
+func I(in int64) sdkmath.Int                { return sdkmath.NewInt(in) }
+func D(str string) sdk.Dec                  { return sdk.MustNewDecFromStr(str) }
+func C(denom string, amount int64) sdk.Coin { return sdk.NewInt64Coin(denom, amount) }
+func Cs(coins ...sdk.Coin) sdk.Coins        { return sdk.NewCoins(coins...) }
+
+func AssertProtoMessageJSON(t *testing.T, cdc codec.Codec, expected proto.Message, actual proto.Message) {
+	expectedJson, err := cdc.MarshalJSON(expected)
+	assert.NoError(t, err)
+	actualJson, err := cdc.MarshalJSON(actual)
+	assert.NoError(t, err)
+	assert.Equal(t, string(expectedJson), string(actualJson))
+}

x/wrapped-a0gi-base/types/errors.go

@@ -3,6 +3,7 @@ package types
 import errorsmod "cosmossdk.io/errors"
 
 var (
-	ErrTxForbidden         = errorsmod.Register(ModuleName, 1, "cosmos tx forbidden")
-	ErrInsufficientMintCap = errorsmod.Register(ModuleName, 2, "insufficient mint cap")
+	ErrTxForbidden            = errorsmod.Register(ModuleName, 1, "cosmos tx forbidden")
+	ErrInsufficientMintCap    = errorsmod.Register(ModuleName, 2, "insufficient mint cap")
+	ErrInsufficientMintSupply = errorsmod.Register(ModuleName, 3, "insufficient mint supply")
 )

x/wrapped-a0gi-base/types/tx.pb.go

@@ -181,8 +181,7 @@ var xxx_messageInfo_MsgSetMintCapResponse proto.InternalMessageInfo
 
 type MsgMint struct {
 	Minter []byte `protobuf:"bytes,1,opt,name=minter,proto3" json:"minter,omitempty"`
-	To     []byte `protobuf:"bytes,2,opt,name=to,proto3" json:"to,omitempty"`
-	Amount []byte `protobuf:"bytes,3,opt,name=amount,proto3" json:"amount,omitempty"`
+	Amount []byte `protobuf:"bytes,2,opt,name=amount,proto3" json:"amount,omitempty"`
 }
 
 func (m *MsgMint) Reset()         { *m = MsgMint{} }
@@ -342,35 +341,34 @@ func init() {
 func init() { proto.RegisterFile("zgc/wrappeda0gibase/tx.proto", fileDescriptor_f80bf93a1fc022d3) }
 
 var fileDescriptor_f80bf93a1fc022d3 = []byte{
-	// 436 bytes of a gzipped FileDescriptorProto
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-	0xaf, 0x03, 0x00, 0x00,
+	// 421 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x93, 0x4f, 0xab, 0xd3, 0x40,
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+	0x27, 0x59, 0x32, 0x3d, 0xcd, 0xaa, 0xf7, 0x3a, 0xf6, 0xd6, 0x7f, 0x4c, 0x65, 0xbd, 0x35, 0xd5,
+	0xcd, 0xd6, 0x54, 0x7f, 0x6f, 0x4d, 0xf5, 0xc7, 0xce, 0x54, 0x36, 0x3b, 0x53, 0xf9, 0xb5, 0x33,
+	0x95, 0xcf, 0x2f, 0x69, 0x28, 0x66, 0x99, 0x6f, 0x07, 0x2c, 0x42, 0x0e, 0x9d, 0x63, 0x9f, 0x23,
+	0x87, 0x8e, 0x82, 0x19, 0x0e, 0x63, 0xb4, 0xa8, 0x2e, 0x6f, 0x24, 0xe1, 0xa3, 0xe2, 0xf6, 0x96,
+	0x09, 0xe1, 0x7e, 0x33, 0x3f, 0x8f, 0x17, 0x7f, 0x03, 0x00, 0x00, 0xff, 0xff, 0x6f, 0x43, 0x23,
+	0x4d, 0x9f, 0x03, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -713,13 +711,6 @@ func (m *MsgMint) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		copy(dAtA[i:], m.Amount)
 		i = encodeVarintTx(dAtA, i, uint64(len(m.Amount)))
 		i--
-		dAtA[i] = 0x1a
-	}
-	if len(m.To) > 0 {
-		i -= len(m.To)
-		copy(dAtA[i:], m.To)
-		i = encodeVarintTx(dAtA, i, uint64(len(m.To)))
-		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.Minter) > 0 {
@@ -892,10 +883,6 @@ func (m *MsgMint) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
 	}
-	l = len(m.To)
-	if l > 0 {
-		n += 1 + l + sovTx(uint64(l))
-	}
 	l = len(m.Amount)
 	if l > 0 {
 		n += 1 + l + sovTx(uint64(l))
@@ -1374,40 +1361,6 @@ func (m *MsgMint) Unmarshal(dAtA []byte) error {
 			}
 			iNdEx = postIndex
 		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field To", wireType)
-			}
-			var byteLen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowTx
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				byteLen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if byteLen < 0 {
-				return ErrInvalidLengthTx
-			}
-			postIndex := iNdEx + byteLen
-			if postIndex < 0 {
-				return ErrInvalidLengthTx
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			m.To = append(m.To[:0], dAtA[iNdEx:postIndex]...)
-			if m.To == nil {
-				m.To = []byte{}
-			}
-			iNdEx = postIndex
-		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Amount", wireType)
 			}