// MutateTransaction for Defaults sets reasonable defaults on the transaction being built
func (m Defaults) MutateTransaction(o *TransactionBuilder) error {
o.TX.Fee = 100
memo, err := xdr.NewMemo(xdr.MemoTypeMemoNone, nil)
o.TX.Memo = memo
o.NetworkID = DefaultNetwork.ID()
return err
}
// MutateTransaction for MemoText sets the memo.
func (m MemoText) MutateTransaction(o *TransactionBuilder) (err error) {
if len([]byte(m.Value)) > MemoTextMaxLength {
err = errors.New("Memo too long; over 28 bytes")
return
}
o.TX.Memo, err = xdr.NewMemo(xdr.MemoTypeMemoText, m.Value)
return
}
// MutateTransaction for MemoReturn sets the memo.
func (m MemoReturn) MutateTransaction(o *TransactionBuilder) (err error) {
o.TX.Memo, err = xdr.NewMemo(xdr.MemoTypeMemoReturn, m.Value)
return
}
// MutateTransaction for MemoID sets the memo.
func (m MemoID) MutateTransaction(o *TransactionBuilder) (err error) {
o.TX.Memo, err = xdr.NewMemo(xdr.MemoTypeMemoId, xdr.Uint64(m.Value))
return
}
func TestRequestHandlerPayment(t *testing.T) {
c := &config.Config{
NetworkPassphrase: "Test SDF Network ; September 2015",
Compliance: "http://compliance",
}
mockHorizon := new(mocks.MockHorizon)
mockHTTPClient := new(mocks.MockHTTPClient)
mockTransactionSubmitter := new(mocks.MockTransactionSubmitter)
mockFederationResolver := new(mocks.MockFederationResolver)
mockStellartomlResolver := new(mocks.MockStellartomlResolver)
requestHandler := RequestHandler{}
// Inject mocks
var g inject.Graph
err := g.Provide(
&inject.Object{Value: &requestHandler},
&inject.Object{Value: c},
&inject.Object{Value: mockHorizon},
&inject.Object{Value: mockHTTPClient},
&inject.Object{Value: mockTransactionSubmitter},
&inject.Object{Value: mockFederationResolver},
&inject.Object{Value: mockStellartomlResolver},
)
if err != nil {
panic(err)
}
if err := g.Populate(); err != nil {
panic(err)
}
testServer := httptest.NewServer(http.HandlerFunc(requestHandler.Payment))
defer testServer.Close()
Convey("Given payment request", t, func() {
Convey("When source is invalid", func() {
params := url.Values{
"source": {"SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX43"},
"destination": {"GBABZMS7MEDWKWSHOMUKAWGIOE5UA4XLVPUHRHVMUW2DUVEZXLH5OIET"},
"amount": {"20.0"},
}
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "source"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When destination is invalid", func() {
params := url.Values{
"source": {"SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX42"},
"destination": {"GD3YBOYIUVLU"},
"amount": {"20.0"},
}
mockFederationResolver.On(
"Resolve",
"GD3YBOYIUVLU",
).Return(
federation.Response{AccountID: "GD3YBOYIUVLU"},
stellartoml.StellarToml{},
nil,
).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "destination"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When destination is a Stellar address", func() {
params := url.Values{
"source": {"SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX42"},
"destination": {"bob*stellar.org"},
"amount": {"20.0"},
}
Convey("When FederationResolver returns error", func() {
mockFederationResolver.On(
"Resolve",
"bob*stellar.org",
).Return(
federation.Response{},
stellartoml.StellarToml{},
errors.New("stellar.toml response status code indicates error"),
).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "cannot_resolve_destination",
"message": "Cannot resolve federated Stellar address."
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When federation response is correct (no memo)", func() {
validParams := url.Values{
// GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ
"source": {"SDWLS4G3XCNIYPKXJWWGGJT6UDY63WV6PEFTWP7JZMQB4RE7EUJQN5XM"},
"destination": {"bob*stellar.org"},
"amount": {"20"},
}
mockFederationResolver.On(
"Resolve",
"bob*stellar.org",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
// Checking if destination account exists
mockHorizon.On(
"LoadAccount",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(horizon.AccountResponse{}, nil).Once()
// Loading sequence number
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988728
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAAAAAAAAAvrwgAAAAAAAAAAAfwmKjcAAABAh3M6y9LXiWD0GB1KCkgNS5H1Lnyr1wS1BsfzoM1/v0muzobwNkJinV+RcWyC8VfeKqOjKBOANJnEusl+sHkcAg==",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
"ledger": 1988728
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When federation response is correct (with memo)", func() {
validParams := url.Values{
// GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ
"source": {"SDWLS4G3XCNIYPKXJWWGGJT6UDY63WV6PEFTWP7JZMQB4RE7EUJQN5XM"},
"destination": {"bob*stellar.org"},
"amount": {"20"},
}
mockFederationResolver.On(
"Resolve",
"bob*stellar.org",
).Return(
federation.Response{
AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
MemoType: "text",
Memo: "125",
},
stellartoml.StellarToml{},
nil,
).Once()
// Checking if destination account exists
mockHorizon.On(
"LoadAccount",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(horizon.AccountResponse{}, nil).Once()
// Loading sequence number
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988728
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "ad71fc31bfae25b0bd14add4cc5306661edf84cdd73f1353d2906363899167e1",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAEAAAADMTI1AAAAAAEAAAAAAAAAAQAAAADkhVuboDyZuBz9qkCLPGYF/jNmapt51Hcp74xNrumNVgAAAAAAAAAAC+vCAAAAAAAAAAAB/CYqNwAAAEAjnc8Wf31VxgBXXhEmZfLo6c4YJtROVy5MTLsWFSx7TCkoQzCskBVcC30DrjQq7Vzm0zwg+mBmSGI5wFbctKgB",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "ad71fc31bfae25b0bd14add4cc5306661edf84cdd73f1353d2906363899167e1",
"ledger": 1988728
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
})
Convey("When asset_issuer is invalid", func() {
params := url.Values{
"source": {"SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX42"},
"destination": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
"asset_code": {"USD"},
"asset_issuer": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN631"},
"amount": {"100.0"},
}
mockFederationResolver.On(
"Resolve",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "asset_issuer"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When assetCode is invalid", func() {
// GBKGH7QZVCZ2ZA5OUGZSTHFNXTBHL3MPCKSCBJUAQODGPMWP7OMMRKDW
source := "SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX42"
destination := "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"
amount := "20"
assetCode := "1234567890123"
assetIssuer := "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"
mockFederationResolver.On(
"Resolve",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
Convey("it should return error", func() {
mockHorizon.On(
"LoadAccount",
"GBKGH7QZVCZ2ZA5OUGZSTHFNXTBHL3MPCKSCBJUAQODGPMWP7OMMRKDW",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
statusCode, response := net.GetResponse(
testServer,
url.Values{
"source": {source},
"destination": {destination},
"amount": {amount},
"asset_code": {assetCode},
"asset_issuer": {assetIssuer},
},
)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "asset_code"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When amount is invalid", func() {
// GBKGH7QZVCZ2ZA5OUGZSTHFNXTBHL3MPCKSCBJUAQODGPMWP7OMMRKDW
source := "SDRAS7XIQNX25UDCCX725R4EYGBFYGJE4HJ2A3DFCWJIHMRSMS7CXX42"
destination := "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"
amount := "test"
assetCode := "USD"
assetIssuer := "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"
mockFederationResolver.On(
"Resolve",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
mockHorizon.On(
"LoadAccount",
"GBKGH7QZVCZ2ZA5OUGZSTHFNXTBHL3MPCKSCBJUAQODGPMWP7OMMRKDW",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(
testServer,
url.Values{
"source": {source},
"destination": {destination},
"amount": {amount},
"asset_code": {assetCode},
"asset_issuer": {assetIssuer},
},
)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "amount"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("When params are valid (payment operation)", func() {
validParams := url.Values{
// GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ
"source": {"SDWLS4G3XCNIYPKXJWWGGJT6UDY63WV6PEFTWP7JZMQB4RE7EUJQN5XM"},
"destination": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
"amount": {"20"},
"asset_code": {"USD"},
"asset_issuer": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
}
mockFederationResolver.On(
"Resolve",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
Convey("When memo is set", func() {
Convey("only `memo` param is set", func() {
validParams.Add("memo", "test")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "missing_parameter",
"message": "Required parameter is missing.",
"data": {
"name": "memo_type"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("only `memo_type` param is set", func() {
validParams.Add("memo_type", "id")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "missing_parameter",
"message": "Required parameter is missing.",
"data": {
"name": "memo"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("memo_type=hash to long", func() {
validParams.Add("memo_type", "hash")
validParams.Add("memo", "012345678901234567890123456789012345678901234567890123456789012")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "memo"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("unsupported memo_type", func() {
validParams.Add("memo_type", "return_hash")
validParams.Add("memo", "0123456789")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "invalid_parameter",
"message": "Invalid parameter.",
"data": {
"name": "memo"
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("memo is attached to the transaction", func() {
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "f16040c1c6ee29eb4cc6f797651901750ff48a203985eea74f94353502f6629d",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAIAAAAAAAAAewAAAAEAAAAAAAAAAQAAAADkhVuboDyZuBz9qkCLPGYF/jNmapt51Hcp74xNrumNVgAAAAFVU0QAAAAAAOSFW5ugPJm4HP2qQIs8ZgX+M2Zqm3nUdynvjE2u6Y1WAAAAAAvrwgAAAAAAAAAAAfwmKjcAAABADsRVwB27jfr3OthAWlRMSrxAIDPENw1dOfga5/cahnIneJQ5NPS5g96Rp8Y5xTsOU3Y9JmBDKB8g8lXFCXdwCA==",
).Return(horizonResponse, nil).Once()
validParams.Add("memo_type", "id")
validParams.Add("memo", "123")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "f16040c1c6ee29eb4cc6f797651901750ff48a203985eea74f94353502f6629d",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("memo hash is attached to the transaction", func() {
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "b6802ab06786c923d7180236a84470c03b37ec71912bfe335d0cb57ebc534881",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAMCADrUIHRM3rjlJN62XzjLUJXTDQAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAQAAAADkhVuboDyZuBz9qkCLPGYF/jNmapt51Hcp74xNrumNVgAAAAFVU0QAAAAAAOSFW5ugPJm4HP2qQIs8ZgX+M2Zqm3nUdynvjE2u6Y1WAAAAAAvrwgAAAAAAAAAAAfwmKjcAAABAEV6Lzok4i4C1jJA3PVVARGx2+yfVw8odprnnnG0hqkUUwKnvVQcd59UJwbfzTG7oxR5DvxflV4aQ6RmZsIcmDQ==",
).Return(horizonResponse, nil).Once()
validParams.Add("memo_type", "hash")
validParams.Add("memo", "02003AD420744CDEB8E524DEB65F38CB5095D30D000000000000000000000000")
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "b6802ab06786c923d7180236a84470c03b37ec71912bfe335d0cb57ebc534881",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("source account does not exist", func() {
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(horizon.AccountResponse{}, errors.New("Not found")).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "source_not_exist",
"message": "Source account does not exist."
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("transaction failed in horizon", func() {
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
horizonResponse := horizon.SubmitTransactionResponse{
Ledger: nil,
Extras: &horizon.SubmitTransactionResponseExtras{
EnvelopeXdr: "envelope",
ResultXdr: "AAAAAAAAAAD////7AAAAAA==", // tx_bad_seq
},
}
mockHorizon.On(
"SubmitTransaction",
mock.AnythingOfType("string"),
).Return(horizonResponse, nil).Once()
Convey("it should return error", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 400, statusCode)
expected := test.StringToJSONMap(`{
"code": "transaction_bad_seq",
"message": "Bad Sequence. Please, try again."
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("transaction success (native)", func() {
validParams := url.Values{
// GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ
"source": {"SDWLS4G3XCNIYPKXJWWGGJT6UDY63WV6PEFTWP7JZMQB4RE7EUJQN5XM"},
"destination": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
"amount": {"20"},
}
// Checking if destination exists
mockHorizon.On(
"LoadAccount",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(horizon.AccountResponse{}, nil).Once()
// Loading sequence number
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAAAAAAAAAvrwgAAAAAAAAAAAfwmKjcAAABAh3M6y9LXiWD0GB1KCkgNS5H1Lnyr1wS1BsfzoM1/v0muzobwNkJinV+RcWyC8VfeKqOjKBOANJnEusl+sHkcAg==",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("transaction success (credit)", func() {
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "4c8ddbc990381d5f7fe5142be0ac70fb282e7c54347734cdd7f19716fa18930b",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAABVVNEAAAAAADkhVuboDyZuBz9qkCLPGYF/jNmapt51Hcp74xNrumNVgAAAAAL68IAAAAAAAAAAAH8Jio3AAAAQHbXpCBe/lDG5rWhwNpdH+DnrkYKONvMyPJDFik5mC/gcIL9xHx3FfB+u1Ik7N9gJxi8AlRRqXo+/yCyOoQQ3Ac=",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "4c8ddbc990381d5f7fe5142be0ac70fb282e7c54347734cdd7f19716fa18930b",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
})
Convey("When params are valid (path payment operation)", func() {
validParams := url.Values{
// GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ
"source": {"SDWLS4G3XCNIYPKXJWWGGJT6UDY63WV6PEFTWP7JZMQB4RE7EUJQN5XM"},
"destination": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
"amount": {"20"},
"asset_code": {"USD"},
"asset_issuer": {"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
"send_max": {"100"},
}
// Source
mockHorizon.On(
"LoadAccount",
"GCF3WVYTHF75PEG6622G5G6KU26GOSDQPDHSCJ3DQD7VONH4EYVDOGKJ",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
// Destination
mockFederationResolver.On(
"Resolve",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
federation.Response{AccountID: "GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632"},
stellartoml.StellarToml{},
nil,
).Once()
mockHorizon.On(
"LoadAccount",
"GDSIKW43UA6JTOA47WVEBCZ4MYC74M3GNKNXTVDXFHXYYTNO5GGVN632",
).Return(
horizon.AccountResponse{
SequenceNumber: "100",
},
nil,
).Once()
Convey("transaction success (send native)", func() {
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "88214f536658717d5a7d96e449d2fbd96277ce16f3d88dea023e5f20bd37325d",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAIAAAAAAAAAADuaygAAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAABVVNEAAAAAADkhVuboDyZuBz9qkCLPGYF/jNmapt51Hcp74xNrumNVgAAAAAL68IAAAAAAAAAAAAAAAAB/CYqNwAAAECx9I76SOIjCL3pgwZdmFj9KWFzvNL82dt3+Laokh6Zm2v0o1UNq1mQsrqrv0mXM6uNcA96NbkfbogtXauHmwML",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "88214f536658717d5a7d96e449d2fbd96277ce16f3d88dea023e5f20bd37325d",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("transaction success (send credit)", func() {
validParams["send_asset_code"] = []string{"USD"}
validParams["send_asset_issuer"] = []string{"GBDOSO3K4JTGSWJSIHXAOFIBMAABVM3YK3FI6VJPKIHHM56XAFIUCGD6"}
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "8d143f846c2e0ce20364be737c2ebdbcd0da307b4952ec8e91ffcbbc6f51f5ce",
Ledger: &ledger,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAIAAAABVVNEAAAAAABG6Ttq4mZpWTJB7gcVAWAAGrN4VsqPVS9SDnZ31wFRQQAAAAA7msoAAAAAAOSFW5ugPJm4HP2qQIs8ZgX+M2Zqm3nUdynvjE2u6Y1WAAAAAVVTRAAAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAAAC+vCAAAAAAAAAAAAAAAAAfwmKjcAAABA3rQOu+r9DvUhGDSOVaD05RWgzvzMJt49opYNfGLLOSo7/29rUkPIyw5PgV/1arrTwj90HRnzmVjHJK2xy+MfBQ==",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "8d143f846c2e0ce20364be737c2ebdbcd0da307b4952ec8e91ffcbbc6f51f5ce",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
Convey("transaction success (path)", func() {
validParams["send_asset_code"] = []string{"USD"}
validParams["send_asset_issuer"] = []string{"GBDOSO3K4JTGSWJSIHXAOFIBMAABVM3YK3FI6VJPKIHHM56XAFIUCGD6"}
// Native
validParams["path[0][asset_code]"] = []string{""}
validParams["path[0][asset_issuer]"] = []string{""}
// Credit
validParams["path[1][asset_code]"] = []string{"EUR"}
validParams["path[1][asset_issuer]"] = []string{"GAF3PBFQLH57KPECN4GRGHU5NUZ3XXKYYWLOTBIRJMBYHPUBWANIUCZU"}
var ledger uint64
ledger = 1988727
resultXdr := "AAAAAAAAAGQAAAAAAAAAAQAAAAAAAAACAAAAAAAAAAEAAAAAC8RjSvPMPWeQWzLq8JEM0BQNo0TfJQN/RwkCeJ+rT+YAAAAAAAAAAwAAAAFaQVIAAAAAAGDBYXf7bGrEkzodp+6aowtAynuEqzKzZRZKO2ftxMtDAAAAAa9EDYAAAAABVVNEAAAAAABstavC6cvn5h86pWOK5996Ape9k8mMM+Fgzqdp6J+9BwAAAAAeMEigAAAAAOj2P+n5SvD0Amrc4BYc6Zo8n6i6idQPeJdfwuvX+FVbAAAAAVpBUgAAAAAAYMFhd/tsasSTOh2n7pqjC0DKe4SrMrNlFko7Z+3Ey0MAAAABr0QNgAAAAAA="
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "be2765c309ab6911fe3938de0053672ef541290333a59dfb750f07919e9d6fec",
Ledger: &ledger,
ResultXdr: &resultXdr,
Extras: nil,
}
mockHorizon.On(
"SubmitTransaction",
"AAAAAIu7VxM5f9eQ3va0bpvKprxnSHB4zyEnY4D/VzT8Jio3AAAAZAAAAAAAAABlAAAAAAAAAAAAAAABAAAAAAAAAAIAAAABVVNEAAAAAABG6Ttq4mZpWTJB7gcVAWAAGrN4VsqPVS9SDnZ31wFRQQAAAAA7msoAAAAAAOSFW5ugPJm4HP2qQIs8ZgX+M2Zqm3nUdynvjE2u6Y1WAAAAAVVTRAAAAAAA5IVbm6A8mbgc/apAizxmBf4zZmqbedR3Ke+MTa7pjVYAAAAAC+vCAAAAAAIAAAAAAAAAAUVVUgAAAAAAC7eEsFn79TyCbw0THp1tM7vdWMWW6YURSwODvoGwGooAAAAAAAAAAfwmKjcAAABAyO0YxnfaIdY51J9BaPyZYNxsBY2AhWCZpK6FRlaE+ZbdmznZ9cio2G7+fJgl3hWZUrQknQHElmzAZdgsqNnZAQ==",
).Return(horizonResponse, nil).Once()
Convey("it should return success", func() {
statusCode, response := net.GetResponse(testServer, validParams)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "be2765c309ab6911fe3938de0053672ef541290333a59dfb750f07919e9d6fec",
"ledger": 1988727,
"send_amount": "50.6480800",
"result_xdr": "AAAAAAAAAGQAAAAAAAAAAQAAAAAAAAACAAAAAAAAAAEAAAAAC8RjSvPMPWeQWzLq8JEM0BQNo0TfJQN/RwkCeJ+rT+YAAAAAAAAAAwAAAAFaQVIAAAAAAGDBYXf7bGrEkzodp+6aowtAynuEqzKzZRZKO2ftxMtDAAAAAa9EDYAAAAABVVNEAAAAAABstavC6cvn5h86pWOK5996Ape9k8mMM+Fgzqdp6J+9BwAAAAAeMEigAAAAAOj2P+n5SvD0Amrc4BYc6Zo8n6i6idQPeJdfwuvX+FVbAAAAAVpBUgAAAAAAYMFhd/tsasSTOh2n7pqjC0DKe4SrMrNlFko7Z+3Ey0MAAAABr0QNgAAAAAA="
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
})
})
Convey("Given payment compliance request", t, func() {
Convey("When params are valid", func() {
params := url.Values{
// GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD
"source": {"SARMR3N465GTEHQLR3TSHDD7FHFC2I22ECFLYCHAZDEJWBVED66RW7FQ"},
"sender": {"alice*stellar.org"}, // GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD
"destination": {"bob*stellar.org"}, // GAMVF7G4GJC4A7JMFJWLUAEIBFQD5RT3DCB5DC5TJDEKQBBACQ4JZVEE
"amount": {"20"},
"asset_code": {"USD"},
"asset_issuer": {"GAMVF7G4GJC4A7JMFJWLUAEIBFQD5RT3DCB5DC5TJDEKQBBACQ4JZVEE"},
"extra_memo": {"hello world"},
}
Convey("it should return error when compliance server returns error", func() {
mockHTTPClient.On(
"PostForm",
"http://compliance/send",
mock.AnythingOfType("url.Values"),
).Return(
net.BuildHTTPResponse(400, "error"),
nil,
).Run(func(args mock.Arguments) {
values := args.Get(1).(url.Values)
// bridge server does not send source seed to compliance
assert.Equal(t, []string{"GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD"}, values["source"])
values.Del("source")
params.Del("source")
assert.Equal(t, values.Encode(), params.Encode())
}).Once()
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 500, statusCode)
expected := test.StringToJSONMap(`{
"code": "internal_server_error",
"message": "Internal Server Error, please try again."
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("it should return denied when compliance server returns denied", func() {
mockHTTPClient.On(
"PostForm",
"http://compliance/send",
mock.AnythingOfType("url.Values"),
).Return(
net.BuildHTTPResponse(200, "{\"auth_response\": {\"tx_status\": \"denied\"}}"),
nil,
).Run(func(args mock.Arguments) {
values := args.Get(1).(url.Values)
// bridge server does not send source seed to compliance
assert.Equal(t, []string{"GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD"}, values["source"])
values.Del("source")
params.Del("source")
assert.Equal(t, values.Encode(), params.Encode())
}).Once()
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 403, statusCode)
expected := test.StringToJSONMap(`{
"code": "denied",
"message": "Transaction denied by destination."
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("it should return pending when compliance server returns pending", func() {
mockHTTPClient.On(
"PostForm",
"http://compliance/send",
mock.AnythingOfType("url.Values"),
).Return(
net.BuildHTTPResponse(200, "{\"auth_response\": {\"info_status\": \"pending\", \"pending\": 3600}}"),
nil,
).Run(func(args mock.Arguments) {
values := args.Get(1).(url.Values)
// bridge server does not send source seed to compliance
assert.Equal(t, []string{"GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD"}, values["source"])
values.Del("source")
params.Del("source")
assert.Equal(t, values.Encode(), params.Encode())
}).Once()
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 202, statusCode)
expected := test.StringToJSONMap(`{
"code": "pending",
"message": "Transaction pending. Repeat your request after given time.",
"data": {
"pending": 3600
}
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
Convey("it should submit transaction when compliance server returns success", func() {
memoBytes, _ := hex.DecodeString("b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9")
var hashXdr xdr.Hash
copy(hashXdr[:], memoBytes[:])
memo, _ := xdr.NewMemo(xdr.MemoTypeMemoHash, hashXdr)
sourceBytes, _ := hex.DecodeString("2dffe7c67daf270d2e617abe8597f559831131551a116859feba99c32e8abfc3")
var sourceXdr xdr.Uint256
copy(sourceXdr[:], sourceBytes[:])
destinationBytes, _ := hex.DecodeString("1952fcdc3245c07d2c2a6cba008809603ec67b1883d18bb348c8a8042014389c")
var destinationXdr xdr.Uint256
copy(destinationXdr[:], destinationBytes[:])
issuerBytes, _ := hex.DecodeString("1952fcdc3245c07d2c2a6cba008809603ec67b1883d18bb348c8a8042014389c")
var issuerXdr xdr.Uint256
copy(issuerXdr[:], issuerBytes[:])
expectedTx := &xdr.Transaction{
SourceAccount: xdr.AccountId{
Type: xdr.CryptoKeyTypeKeyTypeEd25519,
Ed25519: &sourceXdr,
},
Fee: 100,
SeqNum: 0,
Memo: memo,
Operations: []xdr.Operation{
{
Body: xdr.OperationBody{
Type: xdr.OperationTypePayment,
PaymentOp: &xdr.PaymentOp{
Destination: xdr.AccountId{
Type: xdr.CryptoKeyTypeKeyTypeEd25519,
Ed25519: &destinationXdr,
},
Amount: 200000000,
Asset: xdr.Asset{
Type: xdr.AssetTypeAssetTypeCreditAlphanum4,
AlphaNum4: &xdr.AssetAlphaNum4{
AssetCode: [4]byte{'U', 'S', 'D', 0},
Issuer: xdr.AccountId{
Type: xdr.CryptoKeyTypeKeyTypeEd25519,
Ed25519: &issuerXdr,
},
},
},
},
},
},
},
}
complianceResponse := compliance.SendResponse{
TransactionXdr: "AAAAAC3/58Z9rycNLmF6voWX9VmDETFVGhFoWf66mcMuir/DAAAAZAAAAAAAAAAAAAAAAAAAAAO5TSe5k00+CKUuUtfafav6xITv43pTgO6QiPes4u/N6QAAAAEAAAAAAAAAAQAAAAAZUvzcMkXAfSwqbLoAiAlgPsZ7GIPRi7NIyKgEIBQ4nAAAAAFVU0QAAAAAABlS/NwyRcB9LCpsugCICWA+xnsYg9GLs0jIqAQgFDicAAAAAAvrwgAAAAAA",
}
mockHTTPClient.On(
"PostForm",
"http://compliance/send",
mock.AnythingOfType("url.Values"),
).Return(
net.BuildHTTPResponse(200, string(complianceResponse.Marshal())),
nil,
).Run(func(args mock.Arguments) {
values := args.Get(1).(url.Values)
assert.Equal(t, []string{"GAW77Z6GPWXSODJOMF5L5BMX6VMYGEJRKUNBC2CZ725JTQZORK74HQQD"}, values["source"])
values.Del("source")
params.Del("source")
assert.Equal(t, values.Encode(), params.Encode())
}).Once()
var ledger uint64
ledger = 1988727
horizonResponse := horizon.SubmitTransactionResponse{
Hash: "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
Ledger: &ledger,
Extras: nil,
}
mockTransactionSubmitter.On(
"SignAndSubmitRawTransaction",
params.Get("source"),
mock.AnythingOfType("*xdr.Transaction"),
).Run(func(args mock.Arguments) {
tx := args.Get(1).(*xdr.Transaction)
assert.Equal(t, *tx, *expectedTx)
}).Return(horizonResponse, nil).Once()
statusCode, response := net.GetResponse(testServer, params)
responseString := strings.TrimSpace(string(response))
assert.Equal(t, 200, statusCode)
expected := test.StringToJSONMap(`{
"hash": "6a0049b44e0d0341bd52f131c74383e6ccd2b74b92c829c990994d24bbfcfa7a",
"ledger": 1988727
}`)
assert.Equal(t, expected, test.StringToJSONMap(responseString))
})
})
})
}
// ExampleLowLevelTransaction creates and signs a simple transaction, and then
// encodes it into a hex string capable of being submitted to stellar-core.
//
// It uses the low-level xdr facilities to create the transaction.
func ExampleLowLevelTransaction() {
spub, spriv, err := GenerateKeyFromSeed("SA26PHIKZM6CXDGR472SSGUQQRYXM6S437ZNHZGRM6QA4FOPLLLFRGDX")
if err != nil {
panic(err)
}
dpub, _, err := GenerateKeyFromSeed("SBQHO2IMYKXAYJFCWGXC7YKLJD2EGDPSK3IUDHVJ6OOTTKLSCK6Z6POM")
if err != nil {
panic(err)
}
asset, err := xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
if err != nil {
panic(err)
}
destination, err := AddressToAccountId(dpub.Address())
if err != nil {
panic(err)
}
op := xdr.PaymentOp{
Destination: destination,
Asset: asset,
Amount: 50 * 10000000,
}
memo, err := xdr.NewMemo(xdr.MemoTypeMemoNone, nil)
source, err := AddressToAccountId(spub.Address())
if err != nil {
panic(err)
}
body, err := xdr.NewOperationBody(xdr.OperationTypePayment, op)
if err != nil {
panic(err)
}
tx := xdr.Transaction{
SourceAccount: source,
Fee: 10,
SeqNum: xdr.SequenceNumber(1),
Memo: memo,
Operations: []xdr.Operation{
{Body: body},
},
}
var txBytes bytes.Buffer
_, err = xdr.Marshal(&txBytes, tx)
if err != nil {
panic(err)
}
txHash := Hash(txBytes.Bytes())
signature := spriv.Sign(txHash[:])
ds := xdr.DecoratedSignature{
Hint: spriv.Hint(),
Signature: xdr.Signature(signature[:]),
}
txe := xdr.TransactionEnvelope{
Tx: tx,
Signatures: []xdr.DecoratedSignature{ds},
}
var txeBytes bytes.Buffer
_, err = xdr.Marshal(&txeBytes, txe)
if err != nil {
panic(err)
}
txeB64 := base64.StdEncoding.EncodeToString(txeBytes.Bytes())
fmt.Printf("tx base64: %s", txeB64)
// Output: tx base64: AAAAAAU08yUQ8sHqhY8j9mXWwERfHC/3cKFSe/spAr0rGtO2AAAACgAAAAAAAAABAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAA+fnTe7/v4whpBUx96oj92jfZPz7S00l3O2xeyeqWIA0AAAAAAAAAAB3NZQAAAAAAAAAAATXnnQoAAABAieruUIGcQH6RlQ+prYflPFU3nED2NvWhtaC+tgnKsqgiKURK4xo/W7EgH0+I6aQok52awbE+ksOxEQ5MLJ9eAw==
}
// MutateTransaction for SourceAccount sets the transaction's SourceAccount
// to the pubilic key for the address provided
func (m Defaults) MutateTransaction(o *xdr.Transaction) error {
o.Fee = 10
memo, err := xdr.NewMemo(xdr.MemoTypeMemoNone, nil)
o.Memo = memo
return err
}