multi: Add tests for CT discount with latest lwk

Update the supported CLI version to 0.8.0.

This change ensures that lwkwallet is compatible with
the latest version of the command-line interface.

Adds tests to ensure that the CT discount
mechanism functions correctly with the latest version
of lwk.

flake.nix

@@ -10,10 +10,10 @@
     # blockstream-electrs: init at 0.4.1 #299761
     # https://github.com/NixOS/nixpkgs/pull/299761/commits/680d27ad847801af781e0a99e4b87ed73965c69a
     nixpkgs2.url = "github:NixOS/nixpkgs/680d27ad847801af781e0a99e4b87ed73965c69a";
-    # lwk: init at wasm_0.6.3 #14bac28
-    # https://github.com/Blockstream/lwk/releases/tag/wasm_0.6.3
+    # lwk: init at 9ddd20a806625bb40cd063ad61d80d106809a9fd
+    # https://github.com/Blockstream/lwk/commit/9ddd20a806625bb40cd063ad61d80d106809a9fd
     lwk-flake = {
-      url = "github:blockstream/lwk/14bac284fe712dd6fdbbbe82bda179a2a236b2fa";
+      url = "github:blockstream/lwk/9ddd20a806625bb40cd063ad61d80d106809a9fd";
       inputs = {
         nixpkgs.follows = "nixpkgs";
         flake-utils.follows = "flake-utils";

lwk/client.go

@@ -99,8 +99,9 @@ type unvalidatedAddressee struct {
 type sendRequest struct {
 	Addressees []*unvalidatedAddressee `json:"addressees"`
 	// Optional fee rate in sat/vb
-	FeeRate    *float64 `json:"fee_rate,omitempty"`
-	WalletName string   `json:"name"`
+	FeeRate          *float64 `json:"fee_rate,omitempty"`
+	WalletName       string   `json:"name"`
+	EnableCtDiscount bool     `json:"enable_ct_discount"`
 }
 
 type sendResponse struct {

lwk/lwkwallet.go

@@ -30,7 +30,7 @@ const (
 	// Set up here because ctx is not inherited throughout the current codebase.
 	defaultContextTimeout             = time.Second * 5
 	minimumFee            SatPerVByte = 0.1
-	supportedCLIVersion               = "0.5.1"
+	supportedCLIVersion               = "0.8.0"
 )
 
 func SatPerVByteFromFeeBTCPerKb(feeBTCPerKb float64) SatPerVByte {
@@ -169,8 +169,9 @@ func (r *LWKRpcWallet) CreateAndBroadcastTransaction(swapParams *swap.OpeningPar
 				Satoshi: swapParams.Amount,
 			},
 		},
-		WalletName: r.c.GetWalletName(),
-		FeeRate:    &feerate,
+		WalletName:       r.c.GetWalletName(),
+		FeeRate:          &feerate,
+		EnableCtDiscount: true,
 	})
 	if err != nil {
 		return "", "", 0, err
@@ -233,6 +234,7 @@ func (r *LWKRpcWallet) SendToAddress(address string, amount Satoshi) (string, er
 				Satoshi: amount,
 			},
 		},
+		EnableCtDiscount: true,
 	})
 	if err != nil {
 		return "", err

test/utils.go

@@ -14,7 +14,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-const defaultLines = 30
+const defaultLines = 1000
 
 func IsIntegrationTest(t *testing.T) {
 	if os.Getenv("RUN_INTEGRATION_TESTS") != "1" {

testframework/elements.go

@@ -32,6 +32,11 @@ func getLiquiddConfig() map[string]string {
 		"initialfreecoins": "2100000000000000",
 		"validatepegin":    "0",
 		"chain":            "liquidregtest",
+		"acceptdiscountct": "1",
+		"creatediscountct": "1",
+		"minrelaytxfee":    "0.00000001",
+		"mintxfee":         "0.00000001",
+		"blockmintxfee":    "0.00000001",
 	}
 }