signverify_test.go

func TestVerifySignature(t *testing.T) {
	txBytes := []byte{
		10, 234, 1, 10, 131, /// ...
	}

	cdc := MakeEncodingConfig()

	var tx sdktx.Tx
	err := cdc.Codec.Unmarshal(txBytes, &tx)
	require.NoError(t, err)

	var pubkey secp256k1.PubKey
	err = cdc.Codec.Unmarshal(tx.AuthInfo.SignerInfos[0].PublicKey.Value, &pubkey)
	require.NoError(t, err)

	authTx := authtx.WrapTx(&tx).GetTx()

	sigTx, ok := authTx.(authsigning.SigVerifiableTx)
	require.Equal(t, true, ok)

	sigs, err := sigTx.GetSignaturesV2()
	require.NoError(t, err)

	signerData := authsigning.SignerData{
		ChainID:       "banana-1",
		AccountNumber: 123456,
		Sequence:      69,
	}

	err = ante.VerifySignature(&pubkey, signerData, sigs[0].Data, nil, authTx)
	require.NoError(t, err)
}