Initial Invoice implementation

go.mod

@@ -9,6 +9,7 @@ require (
 )
 
 require (
+	github.com/btcsuite/btcutil v1.0.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/ethereum/go-ethereum v1.13.8 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect

go.sum

@@ -89,6 +89,7 @@ github.com/VictoriaMetrics/fastcache v1.6.0/go.mod h1:0qHz5QP0GMX4pfmMA/zt5RgfNu
 github.com/VictoriaMetrics/fastcache v1.12.1/go.mod h1:tX04vaqcNoQeGLD+ra5pU5sWkuxnzWhEzLwhP9w653o=
 github.com/aclements/go-gg v0.0.0-20170118225347-6dbb4e4fefb0/go.mod h1:55qNq4vcpkIuHowELi5C8e+1yUHtoLoOUR9QU5j7Tes=
 github.com/aclements/go-moremath v0.0.0-20210112150236-f10218a38794/go.mod h1:7e+I0LQFUI9AXWxOfsQROs9xPhoJtbsyWcjJqDd4KPY=
+github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/ajstarks/svgo v0.0.0-20180226025133-644b8db467af/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
 github.com/ajstarks/svgo v0.0.0-20210923152817-c3b6e2f0c527/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
@@ -142,8 +143,18 @@ github.com/bmizerany/pat v0.0.0-20170815010413-6226ea591a40/go.mod h1:8rLXio+Wji
 github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps=
 github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
 github.com/boombuler/barcode v1.0.1/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
+github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btcd/btcec/v2 v2.2.0/go.mod h1:U7MHm051Al6XmscBQ0BoNydpOTsFAn707034b5nY8zU=
 github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1/go.mod h1:7SFka0XMvUgj3hfZtydOrQY2mwhPclbT2snogU7SQQc=
+github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
+github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
+github.com/btcsuite/btcutil v1.0.2 h1:9iZ1Terx9fMIOtq1VrwdqfsATL9MC2l8ZrUY6YZ2uts=
+github.com/btcsuite/btcutil v1.0.2/go.mod h1:j9HUFwoQRsZL3V4n+qG+CUnEGHOarIxfC3Le2Yhbcts=
+github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg=
+github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY=
+github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
+github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
+github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
@@ -204,6 +215,7 @@ github.com/crate-crypto/go-kzg-4844 v0.7.0/go.mod h1:1kMhvPgI0Ky3yIa+9lFySEBUBXk
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cyberdelia/templates v0.0.0-20141128023046-ca7fffd4298c/go.mod h1:GyV+0YP4qX0UQ7r2MoYZ+AvYDp12OF5yg4q8rGnyNh4=
 github.com/dave/jennifer v1.2.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
+github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -533,11 +545,13 @@ github.com/iris-contrib/schema v0.0.6/go.mod h1:iYszG0IOsuIsfzjymw1kMzTL8YQcCWlm
 github.com/jackpal/go-nat-pmp v1.0.2/go.mod h1:QPH045xvCAeXUZOxsnwmrtiCoxIr9eob+4orBN1SBKc=
 github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e/go.mod h1:G1CVv03EnqU1wYL2dFwXxW2An0az9JTl/ZsqXQeBlkU=
 github.com/jedisct1/go-minisign v0.0.0-20230811132847-661be99b8267/go.mod h1:h1nSAbGFqGVzn6Jyl1R/iCcBUHN4g+gW1u9CoBTrb9E=
+github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
+github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
@@ -581,6 +595,7 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
 github.com/klauspost/compress v1.4.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
 github.com/klauspost/compress v1.8.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
 github.com/klauspost/compress v1.9.0/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
@@ -712,13 +727,15 @@ github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.10.3/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
 github.com/onsi/ginkgo v1.13.0/go.mod h1:+REjRxOmWfHCjfv9TTWB1jD1Frx4XydAD3zm1lskyM0=
 github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
 github.com/onsi/ginkgo v1.16.4/go.mod h1:dX+/inL/fNMqNlz0e9LfyB9TswhZpCVdJM/Z6Vvnwo0=
 github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/ginkgo/v2 v2.0.0/go.mod h1:vw5CSIxN1JObi/U8gcbwft7ZxR2dgaR70JSE3/PpL4c=
+github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.17.0/go.mod h1:HnhC7FXeEQY45zxNK3PPoIUhzk/80Xly9PcubAlGdZY=
@@ -952,6 +969,7 @@ go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9i
 go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 go.uber.org/zap v1.17.0/go.mod h1:MXVU+bhUf/A7Xi2HNOnopQOrmycQ5Ih87HtOu4q5SSo=
+golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181029021203-45a5f77698d3/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
@@ -963,6 +981,7 @@ golang.org/x/crypto v0.0.0-20190820162420-60c769a6c586/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190909091759-094676da4a83/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191227163750-53104e6ec876/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200115085410-6d4e4cb37c7d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=

uma/protocol/counter_party_data.go

@@ -1,5 +1,10 @@
 package protocol
 
+import (
+	"fmt"
+	"strings"
+)
+
 type CounterPartyDataOption struct {
 	Mandatory bool `json:"mandatory"`
 }
@@ -22,3 +27,34 @@ const (
 func (c CounterPartyDataField) String() string {
 	return string(c)
 }
+
+func (c *CounterPartyDataOptions) MarshalBytes() ([]byte, error) {
+	pairs := make([]string, 0, len(*c))
+	for k, v := range *c {
+		str := k + ":"
+		if v.Mandatory {
+			str += "1"
+		} else {
+			str += "0"
+		}
+		pairs = append(pairs, str)
+	}
+
+	result := []byte(strings.Join(pairs, ","))
+	return result, nil
+}
+
+func (c *CounterPartyDataOptions) UnmarshalBytes(data []byte) error {
+	*c = make(CounterPartyDataOptions)
+	pairs := strings.Split(string(data), ",")
+	for _, pair := range pairs {
+		parts := strings.Split(pair, ":")
+		if len(parts) != 2 {
+			return fmt.Errorf("invalid pair: %s", pair)
+		}
+		(*c)[parts[0]] = CounterPartyDataOption{
+			Mandatory: parts[1] == "1",
+		}
+	}
+	return nil
+}

uma/protocol/invoice.go

@@ -0,0 +1,94 @@
+package protocol
+
+import (
+	"fmt"
+
+	"github.com/btcsuite/btcutil/bech32"
+	"github.com/uma-universal-money-address/uma-go-sdk/uma/utils"
+)
+
+type InvoiceCurrency struct {
+	// Code is the ISO 4217 (if applicable) currency code (eg. "USD"). For cryptocurrencies, this will  be a ticker
+	// symbol, such as BTC for Bitcoin.
+	Code string `tlv:"0"`
+
+	// Name is the full display name of the currency (eg. US Dollars).
+	Name string `tlv:"1"`
+
+	// Symbol is the symbol of the currency (eg. $ for USD).
+	Symbol string `tlv:"2"`
+}
+
+func (c *InvoiceCurrency) MarshalTLV() ([]byte, error) {
+	return utils.MarshalTLV(c)
+}
+
+func (c *InvoiceCurrency) UnmarshalTLV(data []byte) error {
+	return utils.UnmarshalTLV(c, data)
+}
+
+type UmaInvoice struct {
+	// Receiving UMA address
+	ReceiverUma string `tlv:"0"`
+
+	// Invoice UUID Served as both the identifier of the UMA invoice, and the validation of proof of payment.
+	InvoiceUUID string `tlv:"1"`
+
+	// The amount of invoice to be paid in the smalest unit of the ReceivingCurrency.
+	Amount uint64 `tlv:"2"`
+
+	// The currency of the invoice
+	ReceivingCurrency InvoiceCurrency `tlv:"3"`
+
+	// The unix timestamp the UMA invoice expires
+	Expiration uint64 `tlv:"4"`
+
+	// Indicates whether the VASP is a financial institution that requires travel rule information.
+	IsSubjectToTravelRule bool `tlv:"5"`
+
+	// RequiredPayerData the data about the payer that the sending VASP must provide in order to send a payment.
+	RequiredPayerData *CounterPartyDataOptions `tlv:"6"`
+
+	// UmaVersion is a list of UMA versions that the VASP supports for this transaction. It should be
+	// containing the lowest minor version of each major version it supported, separated by commas.
+	UmaVersion string `tlv:"7"`
+
+	// CommentCharsAllowed is the number of characters that the sender can include in the comment field of the pay request.
+	CommentCharsAllowed *int `tlv:"8"`
+
+	// The sender's UMA address. If this field presents, the UMA invoice should directly go to the sending VASP instead of showing in other formats.
+	SenderUma *string `tlv:"9"`
+
+	// The maximum number of the invoice can be paid
+	InvoiceLimit *uint64 `tlv:"10"`
+
+	// KYC status of the receiver, default is verified.
+	KycStatus *KycStatus `tlv:"11"`
+
+	// The signature of the UMA invoice
+	Signature *[]byte `tlv:"100"`
+}
+
+func (i *UmaInvoice) MarshalTLV() ([]byte, error) {
+	return utils.MarshalTLV(i)
+}
+
+func (i *UmaInvoice) UnmarshalTLV(data []byte) error {
+	return utils.UnmarshalTLV(i, data)
+}
+
+func (i *UmaInvoice) ToBech32String() (string, error) {
+	if i.Signature == nil {
+		return "", fmt.Errorf("signature is required to encode to bech32")
+	}
+	tlv, err := i.MarshalTLV()
+	if err != nil {
+		return "", err
+	}
+	conv, err := bech32.ConvertBits(tlv, 8, 5, true)
+	if err != nil {
+		return "", err
+	}
+
+	return bech32.Encode("uma", conv)
+}

uma/protocol/kyc_status.go

@@ -52,3 +52,11 @@ func (k KycStatus) MarshalJSON() ([]byte, error) {
 	s := k.StringValue()
 	return json.Marshal(s)
 }
+
+func (k *KycStatus) MarshalBytes() ([]byte, error) {
+	return []byte(k.StringValue()), nil
+}
+
+func (k *KycStatus) UnmarshalBytes(b []byte) error {
+	return k.UnmarshalJSON(b)
+}

uma/test/protocol_test.go

@@ -251,3 +251,61 @@ usLY8crt6ys3KQ==
 	require.NoError(t, err)
 	require.Equal(t, keysOnlyPubKeyResponse, reserializedPubKeyResponse)
 }
+
+func TestBinaryCodableForCounterPartyDataOptions(t *testing.T) {
+	counterPartyDataOptions := umaprotocol.CounterPartyDataOptions{
+		"name":       umaprotocol.CounterPartyDataOption{Mandatory: false},
+		"email":      umaprotocol.CounterPartyDataOption{Mandatory: false},
+		"compliance": umaprotocol.CounterPartyDataOption{Mandatory: true},
+	}
+	result, err := counterPartyDataOptions.MarshalBytes()
+	require.NoError(t, err)
+
+	resultStr := string(result)
+	require.Equal(t, "name:0,email:0,compliance:1", resultStr)
+
+	counterPartyDataOptions2 := umaprotocol.CounterPartyDataOptions{}
+	err = counterPartyDataOptions2.UnmarshalBytes([]byte(resultStr))
+	require.NoError(t, err)
+	require.Equal(t, counterPartyDataOptions, counterPartyDataOptions2)
+}
+
+func TestUnsignInvoiceTLVCoding(t *testing.T) {
+	kyc := umaprotocol.KycStatusVerified
+	signature := []byte("signature")
+	invoicenvoice := umaprotocol.UmaInvoice{
+		ReceiverUma: "[email protected]",
+		InvoiceUUID: "c7c07fec-cf00-431c-916f-6c13fc4b69f9",
+		Amount:      1000,
+		ReceivingCurrency: umaprotocol.InvoiceCurrency{
+			Code:   "USD",
+			Name:   "US Dollar",
+			Symbol: "$",
+		},
+		Expiration:            1000000,
+		IsSubjectToTravelRule: true,
+		RequiredPayerData: &umaprotocol.CounterPartyDataOptions{
+			"name":       umaprotocol.CounterPartyDataOption{Mandatory: false},
+			"email":      umaprotocol.CounterPartyDataOption{Mandatory: false},
+			"compliance": umaprotocol.CounterPartyDataOption{Mandatory: true},
+		},
+		UmaVersion:          "0.3",
+		CommentCharsAllowed: nil,
+		SenderUma:           nil,
+		InvoiceLimit:        nil,
+		KycStatus:           &kyc,
+		Signature:           &signature,
+	}
+
+	invoiceTLV, err := invoicenvoice.MarshalTLV()
+	require.NoError(t, err)
+
+	invoice2 := umaprotocol.UmaInvoice{}
+	err = invoice2.UnmarshalTLV(invoiceTLV)
+	require.NoError(t, err)
+	require.Equal(t, invoicenvoice, invoice2)
+
+	bech32String, err := invoice2.ToBech32String()
+	require.NoError(t, err)
+	require.Equal(t, "uma1qqxzgen0daqxyctj9e3k7mgpy33nwcesxanx2cedvdnrqvpdxsenzced8ycnve3dxe3nzvmxvv6xyd3evcusypp3xqcrqqcnqqp4256yqyy425eqg3hkcmrpwgpqzfqyqucnqvpsxqcrqpgpqyrpkcm0d4cxc6tpde3k2w3393hxzmt98gczcetdv95kcw3squpnqt3npvqnxeqfwd5kwmnpw36hyegr9rcpg", bech32String)
+}

uma/test/tlv_utils_test.go

@@ -20,10 +20,12 @@ func (b *BinaryCodableStruct) UnmarshalBytes(data []byte) error {
 }
 
 type TLVUtilsTests struct {
-	StringField string `tlv:"0"`
-	IntField    int    `tlv:"1"`
-	BoolField   bool   `tlv:"2"`
-	UInt64Field uint64 `tlv:"3"`
+	StringField              string  `tlv:"0"`
+	IntField                 int     `tlv:"1"`
+	BoolField                bool    `tlv:"2"`
+	UInt64Field              uint64  `tlv:"3"`
+	OptionalStringField      *string `tlv:"6"`
+	OptionalEmptyStringField *string `tlv:"7"`
 }
 
 func (d *TLVUtilsTests) MarshalTLV() ([]byte, error) {
@@ -35,11 +37,14 @@ func (d *TLVUtilsTests) UnmarshalTLV(data []byte) error {
 }
 
 func TestSimpleTLVCoder(t *testing.T) {
+	str := "optional"
 	tlvUtilsTests := TLVUtilsTests{
-		StringField: "hello",
-		IntField:    42,
-		BoolField:   true,
-		UInt64Field: 123,
+		StringField:              "hello",
+		IntField:                 42,
+		BoolField:                true,
+		UInt64Field:              123,
+		OptionalStringField:      &str,
+		OptionalEmptyStringField: nil,
 	}
 
 	data, err := tlvUtilsTests.MarshalTLV()
@@ -68,6 +73,14 @@ func TestSimpleTLVCoder(t *testing.T) {
 	if tlvUtilsTests.UInt64Field != tlvUtilsTests2.UInt64Field {
 		t.Fatalf("expected %d, got %d", tlvUtilsTests.UInt64Field, tlvUtilsTests2.UInt64Field)
 	}
+
+	if *tlvUtilsTests.OptionalStringField != *tlvUtilsTests2.OptionalStringField {
+		t.Fatalf("expected %s, got %s", *tlvUtilsTests.OptionalStringField, *tlvUtilsTests2.OptionalStringField)
+	}
+
+	if tlvUtilsTests2.OptionalEmptyStringField != nil {
+		t.Fatalf("expected optional empty string field to be nil")
+	}
 }
 
 type NestedTLVUtilsTests struct {