itest: make small manual rfq liquidity case fail faster

Author: GeorgeTsagk

itest/litd_custom_channels_test.go

@@ -2897,7 +2897,7 @@ func testCustomChannelsLiquidtyEdgeCasesCore(ctx context.Context,
 	// amount of 354 sats.
 	createAssetInvoice(
 		t.t, dave, charlie, 1, assetID, withInvoiceErrSubStr(
-			"1 asset units, as the minimal transportable amount",
+			"could not create any quotes for the invoice",
 		),
 		withInvGroupKey(groupID),
 	)
@@ -3067,7 +3067,7 @@ func testCustomChannelsLiquidtyEdgeCasesCore(ctx context.Context,
 	res, err := charlieTap.RfqClient.AddAssetBuyOrder(
 		ctx, &rfqrpc.AddAssetBuyOrderRequest{
 			AssetSpecifier: &assetSpecifier,
-			AssetMaxAmt:    10_000,
+			AssetMaxAmt:    1_000,
 			Expiry:         uint64(inOneHour.Unix()),
 			PeerPubKey:     dave.PubKey[:],
 			TimeoutSeconds: 10,
@@ -3083,7 +3083,7 @@ func testCustomChannelsLiquidtyEdgeCasesCore(ctx context.Context,
 	// manually generated, quote.
 	iResp, err := charlie.AddInvoice(ctx, &lnrpc.Invoice{
 		Memo:       "",
-		Value:      200_000,
+		Value:      20_000,
 		RPreimage:  bytes.Repeat([]byte{11}, 32),
 		CltvExpiry: 60,
 		RouteHints: []*lnrpc.RouteHint{{
@@ -3098,8 +3098,8 @@ func testCustomChannelsLiquidtyEdgeCasesCore(ctx context.Context,
 	// Now Erin tries to pay the invoice. Since rfq quote cannot satisfy the
 	// total amount of the invoice this payment will fail.
 	payInvoiceWithSatoshi(
-		t.t, erin, iResp, withPayErrSubStr("context deadline exceeded"),
-		withFailure(lnrpc.Payment_FAILED, failureNone),
+		t.t, erin, iResp,
+		withFailure(lnrpc.Payment_FAILED, failureNoRoute),
 		withGroupKey(groupID),
 	)