You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: fuzz_test.go
    path of file: ./repos/cosmos-sdk/x/tx/signing/aminojson
    
    the code of the file until where you have to start completion: package aminojson

import (
	"context"
	"encoding/json"
	"testing"

	fuzz "github.com/google/gofuzz"

	bankv1beta1 "cosmossdk.io/api/cosmos/bank/v1beta1"
	basev1beta1 "cosmossdk.io/api/cosmos/base/v1beta1"
	txv1beta1 "cosmossdk.io/api/cosmos/tx/v1beta1"
	"cosmossdk.io/x/tx/signing/testutil"
)

func FuzzSignModeGetSignBytes(f *testing.F) {
	if testing.Short() {
		f.Skip("not running in -short mode")
	}

	// 1. Create seeds.
	fee := &txv1beta1.Fee{
		Amount: []*basev1beta1.Coin{{Denom: "uatom", Amount: "1000"}},
	}
	seed := &testutil.HandlerArgumentOptions{
		ChainID: "test-chain",
		Memo:    "sometestmemo",

		Msg: &bankv1beta1.MsgSend{
			FromAddress: "foo",
			ToAddress:   "bar",
			Amount:      []*basev1beta1.Coin{{Denom: "demon", Amount: "100"}},
		},
		AccNum:        1,
		AccSeq:        2,
		SignerAddress: "signerAddress",
		Fee:           fee,
	}

    
func FuzzSignModeGetSignBytes(f *testing.F) {
	if testing.Short() {
		f.Skip("not running in -short mode")
	}

	// 1. Create seeds.
	fee := &txv1beta1.Fee{
		Amount: []*basev1beta1.Coin{{Denom: "uatom", Amount: "1000"}},
	}
	seed := &testutil.HandlerArgumentOptions{
		ChainID: "test-chain",
		Memo:    "sometestmemo",

		Msg: &bankv1beta1.MsgSend{
			FromAddress: "foo",
			ToAddress:   "bar",
			Amount:      []*basev1beta1.Coin{{Denom: "demon", Amount: "100"}},
		},
		AccNum:        1,
		AccSeq:        2,
		SignerAddress: "signerAddress",
		Fee:           fee,
	}

	gf := fuzz.New()
	for i := 0; i < 1e4; i++ {
		blob, err := json.Marshal(seed)
		if err != nil {
			f.Fatal(err)
		}
		f.Add(blob)

		// 1.5. Mutate the seed for the next iteration.
		// gofuzz cannot handle mutating "&bankv1beta1.MsgSend",
		// hence why we are mutating fields individually.
		gf.Fuzz(&seed.ChainID)
		gf.Fuzz(&seed.Memo)
		gf.Fuzz(&seed.AccNum)
		gf.Fuzz(&seed.AccSeq)
		gf.Fuzz(seed.Fee)
		gf.Fuzz(&seed.SignerAddress)
	}

	ctx := context.Background()
	handler := NewSignModeHandler(SignModeHandlerOptions{})

	// 2. Now run the fuzzers.
	f.Fuzz(func(t *testing.T, in []byte) {
		opts := new(testutil.HandlerArgumentOptions)
		if err := json.Unmarshal(in, opts); err != nil {
			return
		}

		signerData, txData, err := testutil.MakeHandlerArguments(*opts)
		if err != nil {
			return
		}
		_, _ = handler.GetSignBytes(ctx, signerData, txData)
	})
}