loopout/test: prevent modification of global test request

loopout_test.go

@@ -225,12 +225,14 @@ func TestCustomSweepConfTarget(t *testing.T) {
 
 	// Use the highest sweep confirmation target before we attempt to use
 	// the default.
-	testRequest.SweepConfTarget = testLoopOutOnChainCltvDelta -
+	testReq := *testRequest
+
+	testReq.SweepConfTarget = testLoopOutOnChainCltvDelta -
 		DefaultSweepConfTargetDelta - 1
 
 	// Set up custom fee estimates such that the lower confirmation target
 	// yields a much higher fee rate.
-	ctx.Lnd.SetFeeEstimate(testRequest.SweepConfTarget, 250)
+	ctx.Lnd.SetFeeEstimate(testReq.SweepConfTarget, 250)
 	ctx.Lnd.SetFeeEstimate(DefaultSweepConfTarget, 10000)
 
 	cfg := newSwapConfig(
@@ -238,7 +240,7 @@ func TestCustomSweepConfTarget(t *testing.T) {
 	)
 
 	initResult, err := newLoopOutSwap(
-		context.Background(), cfg, ctx.Lnd.Height, testRequest,
+		context.Background(), cfg, ctx.Lnd.Height, &testReq,
 	)
 	if err != nil {
 		t.Fatal(err)
@@ -357,7 +359,7 @@ func TestCustomSweepConfTarget(t *testing.T) {
 
 	// The sweep should have a fee that corresponds to the custom
 	// confirmation target.
-	_ = assertSweepTx(testRequest.SweepConfTarget)
+	_ = assertSweepTx(testReq.SweepConfTarget)
 
 	// Once we have published an on chain sweep, we expect a preimage to
 	// have been pushed to our server.
@@ -424,15 +426,16 @@ func TestPreimagePush(t *testing.T) {
 
 	// Start with a high confirmation delta which will have a very high fee
 	// attached to it.
-	testRequest.SweepConfTarget = testLoopOutOnChainCltvDelta -
+	testReq := *testRequest
+	testReq.SweepConfTarget = testLoopOutOnChainCltvDelta -
 		DefaultSweepConfTargetDelta - 1
 
 	// We set our mock fee estimate for our target sweep confs to be our
 	// max miner fee *2, so that our fee will definitely be above what we
 	// are willing to pay, and we will not sweep.
 	ctx.Lnd.SetFeeEstimate(
-		testRequest.SweepConfTarget, chainfee.SatPerKWeight(
-			testRequest.MaxMinerFee*2,
+		testReq.SweepConfTarget, chainfee.SatPerKWeight(
+			testReq.MaxMinerFee*2,
 		),
 	)
 
@@ -446,7 +449,7 @@ func TestPreimagePush(t *testing.T) {
 	)
 
 	initResult, err := newLoopOutSwap(
-		context.Background(), cfg, ctx.Lnd.Height, testRequest,
+		context.Background(), cfg, ctx.Lnd.Height, &testReq,
 	)
 	require.NoError(t, err)
 	swap := initResult.swap