@@ -1008,3 +1008,121 @@ func Test_EstimatedConfiscationResponse(t *testing.T) {
10081008 t .Logf ("Verified Estimated Response Funding : got %d, want %d" , funding ,
10091009 responseFee + outputValue )
10101010}
1011+
1012+ func Test_TransferResponseFees_Example1 (t * testing.T ) {
1013+ contractFees := []uint64 {2000 }
1014+ feeRate := float32 (0.05 )
1015+ dustFeeRate := float32 (0.0 )
1016+
1017+ h := "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"
1018+
1019+ b , err := hex .DecodeString (h )
1020+ if err != nil {
1021+ t .Fatalf ("Failed to parse transfer hex : %s" , err )
1022+ }
1023+
1024+ action , err := Deserialize (b , true )
1025+ if err != nil {
1026+ t .Fatalf ("Failed to deserialize transfer : %s" , err )
1027+ }
1028+
1029+ transfer := action .(* actions.Transfer )
1030+ js , _ := json .MarshalIndent (transfer , "" , " " )
1031+ t .Logf ("Transfer : %s" , js )
1032+
1033+ requestTx := wire .NewMsgTx (1 )
1034+
1035+ var lockingScripts []bitcoin.Script
1036+ for i := 0 ; i < 2 ; i ++ {
1037+ key , _ := bitcoin .GenerateKey (bitcoin .TestNet )
1038+ script , _ := key .LockingScript ()
1039+ lockingScripts = append (lockingScripts , script )
1040+
1041+ var randHash bitcoin.Hash32
1042+ rand .Read (randHash [:])
1043+ requestTx .AddTxIn (wire .NewTxIn (wire .NewOutPoint (& randHash , 1 ), nil ))
1044+ }
1045+
1046+ key , _ := bitcoin .GenerateKey (bitcoin .TestNet )
1047+ script , _ := key .LockingScript ()
1048+ requestTx .AddTxOut (wire .NewTxOut (2021 , script ))
1049+
1050+ requestTx .AddTxOut (wire .NewTxOut (0 , b ))
1051+
1052+ key , _ = bitcoin .GenerateKey (bitcoin .TestNet )
1053+ script , _ = key .LockingScript ()
1054+ requestTx .AddTxOut (wire .NewTxOut (187 , script ))
1055+
1056+ // Estimate funding
1057+ funding , boomerang , err := EstimatedTransferResponse (requestTx , lockingScripts , feeRate ,
1058+ dustFeeRate , contractFees , true )
1059+
1060+ if err != nil {
1061+ t .Fatalf ("Failed to estimate response : %s" , err )
1062+ }
1063+
1064+ t .Logf ("Funding : %v" , funding )
1065+ t .Logf ("Boomerang : %d" , boomerang )
1066+
1067+ if len (funding ) < 1 {
1068+ t .Fatalf ("No contract funding returned" )
1069+ }
1070+
1071+ // From response 522efbe6014b5bf740c48db0b7790d6f3a9203de06ecad1d67abeb01d1281aff
1072+ if funding [0 ] < 2022 {
1073+ t .Errorf ("Not enough contract funding : got %d, want %d" , funding [0 ], 2022 )
1074+ }
1075+
1076+ if boomerang > 0 {
1077+ t .Errorf ("Not enough boomerang : got %d, want %d" , boomerang , 0 )
1078+ }
1079+ }
1080+
1081+ func Test_TransferResponseFees_Example2 (t * testing.T ) {
1082+ contractFees := []uint64 {2000 , 2000 }
1083+ feeRate := float32 (0.05 )
1084+ dustFeeRate := float32 (0.0 )
1085+
1086+ h := "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"
1087+
1088+ b , err := hex .DecodeString (h )
1089+ if err != nil {
1090+ t .Fatalf ("Failed to parse request tx hex : %s" , err )
1091+ }
1092+
1093+ requestTx := & wire.MsgTx {}
1094+ if err := requestTx .Deserialize (bytes .NewReader (b )); err != nil {
1095+ t .Fatalf ("Failed to parse request tx : %s" , err )
1096+ }
1097+
1098+ key , _ := bitcoin .GenerateKey (bitcoin .TestNet )
1099+ script , _ := key .LockingScript ()
1100+ var lockingScripts []bitcoin.Script
1101+ for range requestTx .TxIn {
1102+ lockingScripts = append (lockingScripts , script )
1103+ }
1104+
1105+ // Estimate funding
1106+ funding , boomerang , err := EstimatedTransferResponse (requestTx , lockingScripts , feeRate ,
1107+ dustFeeRate , contractFees , true )
1108+
1109+ if err != nil {
1110+ t .Fatalf ("Failed to estimate response : %s" , err )
1111+ }
1112+
1113+ t .Logf ("Funding : %v" , funding )
1114+ t .Logf ("Boomerang : %d" , boomerang )
1115+
1116+ if len (funding ) < 1 {
1117+ t .Fatalf ("No contract funding returned" )
1118+ }
1119+
1120+ // From response 522efbe6014b5bf740c48db0b7790d6f3a9203de06ecad1d67abeb01d1281aff
1121+ if funding [0 ] < 2022 {
1122+ t .Errorf ("Not enough contract funding : got %d, want %d" , funding [0 ], 2022 )
1123+ }
1124+
1125+ if boomerang > 0 {
1126+ t .Errorf ("Not enough boomerang : got %d, want %d" , boomerang , 0 )
1127+ }
1128+ }
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