multi: context.Background() -> t.Context()

Use the new feature of Go 1.24, fix linter warnings.

This change was produced by:
 - running golangci-lint run --fix
 - sed 's/context.Background/t.Context/' -i `git grep -l context.Background | grep test.go`
 - manually fixing broken tests
 - itest, lntest: use ht.Context() where ht or hn is available
 - in HarnessNode.Stop() we keep using context.Background(), because it is
   called from a cleanup handler in which t.Context() is canceled already.

discovery/gossiper_test.go

@@ -1024,7 +1024,7 @@ func createTestCtx(t *testing.T, startHeight uint32, isChanPeer bool) (
 // the router subsystem.
 func TestProcessAnnouncement(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	timestamp := testTimestamp
 	tCtx, err := createTestCtx(t, 0, false)
@@ -1140,7 +1140,7 @@ func TestProcessAnnouncement(t *testing.T) {
 // propagated to the router subsystem.
 func TestPrematureAnnouncement(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	timestamp := testTimestamp
 
@@ -1176,7 +1176,7 @@ func TestPrematureAnnouncement(t *testing.T) {
 // properly processes partial and fully announcement signatures message.
 func TestSignatureAnnouncementLocalFirst(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -1355,7 +1355,7 @@ func TestSignatureAnnouncementLocalFirst(t *testing.T) {
 // processes announcement with unknown channel ids.
 func TestOrphanSignatureAnnouncement(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -1547,7 +1547,7 @@ func TestOrphanSignatureAnnouncement(t *testing.T) {
 // assembled.
 func TestSignatureAnnouncementRetryAtStartup(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -1783,7 +1783,7 @@ out:
 // the full proof (ChannelAnnouncement) to the remote peer.
 func TestSignatureAnnouncementFullProofWhenRemoteProof(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -2225,7 +2225,7 @@ func TestDeDuplicatedAnnouncements(t *testing.T) {
 // announcements for nodes who do not intend to publicly advertise themselves.
 func TestForwardPrivateNodeAnnouncement(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	const (
 		startingHeight = 100
@@ -2334,7 +2334,7 @@ func TestForwardPrivateNodeAnnouncement(t *testing.T) {
 // zombie edges.
 func TestRejectZombieEdge(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	// We'll start by creating our test context with a batch of
 	// announcements.
@@ -2436,7 +2436,7 @@ func TestRejectZombieEdge(t *testing.T) {
 // becomes live by receiving a fresh update.
 func TestProcessZombieEdgeNowLive(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	// We'll start by creating our test context with a batch of
 	// announcements.
@@ -2594,7 +2594,7 @@ func TestProcessZombieEdgeNowLive(t *testing.T) {
 // be reprocessed later, after our ChannelAnnouncement.
 func TestReceiveRemoteChannelUpdateFirst(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -2798,7 +2798,7 @@ func TestReceiveRemoteChannelUpdateFirst(t *testing.T) {
 // currently know of.
 func TestExtraDataChannelAnnouncementValidation(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 0, false)
 	require.NoError(t, err, "can't create context")
@@ -2835,7 +2835,7 @@ func TestExtraDataChannelAnnouncementValidation(t *testing.T) {
 // know of.
 func TestExtraDataChannelUpdateValidation(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	timestamp := testTimestamp
 	tCtx, err := createTestCtx(t, 0, false)
@@ -2896,7 +2896,7 @@ func TestExtraDataChannelUpdateValidation(t *testing.T) {
 // currently know of.
 func TestExtraDataNodeAnnouncementValidation(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 0, false)
 	require.NoError(t, err, "can't create context")
@@ -2969,7 +2969,7 @@ func assertProcessAnnouncement(t *testing.T, result chan error) {
 // the retransmit ticker ticks.
 func TestRetransmit(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -3079,7 +3079,7 @@ func TestRetransmit(t *testing.T) {
 // no existing channels in the graph do not get forwarded.
 func TestNodeAnnouncementNoChannels(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 0, false)
 	require.NoError(t, err, "can't create context")
@@ -3171,7 +3171,7 @@ func TestNodeAnnouncementNoChannels(t *testing.T) {
 // validate the msg flags and max HTLC field of a ChannelUpdate.
 func TestOptionalFieldsChannelUpdateValidation(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 0, false)
 	require.NoError(t, err, "can't create context")
@@ -3269,7 +3269,7 @@ func TestOptionalFieldsChannelUpdateValidation(t *testing.T) {
 // channel is always sent upon the remote party reconnecting.
 func TestSendChannelUpdateReliably(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	// We'll start by creating our test context and a batch of
 	// announcements.
@@ -3587,7 +3587,7 @@ func sendRemoteMsg(t *testing.T, ctx *testCtx, msg lnwire.Message,
 
 	select {
 	case err := <-ctx.gossiper.ProcessRemoteAnnouncement(
-		context.Background(), msg, remotePeer,
+		t.Context(), msg, remotePeer,
 	):
 		if err != nil {
 			t.Fatalf("unable to process channel msg: %v", err)
@@ -3718,7 +3718,7 @@ out:
 	// policy of all of them.
 	const newTimeLockDelta = 100
 	var edgesToUpdate []EdgeWithInfo
-	err = ctx.router.ForAllOutgoingChannels(context.Background(), func(
+	err = ctx.router.ForAllOutgoingChannels(t.Context(), func(
 		info *models.ChannelEdgeInfo,
 		edge *models.ChannelEdgePolicy) error {
 
@@ -3986,7 +3986,7 @@ func (m *SyncManager) markGraphSyncing() {
 // initial historical sync has completed.
 func TestBroadcastAnnsAfterGraphSynced(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 10, false)
 	require.NoError(t, err, "can't create context")
@@ -4064,7 +4064,7 @@ func TestBroadcastAnnsAfterGraphSynced(t *testing.T) {
 // is tested by TestRateLimitChannelUpdates.
 func TestRateLimitDeDup(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	// Create our test harness.
 	const blockHeight = 100
@@ -4261,7 +4261,7 @@ func TestRateLimitDeDup(t *testing.T) {
 // channel updates.
 func TestRateLimitChannelUpdates(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	// Create our test harness.
 	const blockHeight = 100
@@ -4416,7 +4416,7 @@ func TestRateLimitChannelUpdates(t *testing.T) {
 // about our own channels when coming from a remote peer.
 func TestIgnoreOwnAnnouncement(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -4563,7 +4563,7 @@ func TestIgnoreOwnAnnouncement(t *testing.T) {
 // error.
 func TestRejectCacheChannelAnn(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, proofMatureDelta, false)
 	require.NoError(t, err, "can't create context")
@@ -4644,7 +4644,7 @@ func TestFutureMsgCacheEviction(t *testing.T) {
 // channel announcements are banned properly.
 func TestChanAnnBanningNonChanPeer(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 1000, false)
 	require.NoError(t, err, "can't create context")
@@ -4739,7 +4739,7 @@ func TestChanAnnBanningNonChanPeer(t *testing.T) {
 // get disconnected.
 func TestChanAnnBanningChanPeer(t *testing.T) {
 	t.Parallel()
-	ctx := context.Background()
+	ctx := t.Context()
 
 	tCtx, err := createTestCtx(t, 1000, true)
 	require.NoError(t, err, "can't create context")
@@ -4832,7 +4832,7 @@ func assertChanChainRejection(t *testing.T, ctx *testCtx,
 	}
 
 	_, added := ctx.gossiper.handleChanAnnouncement(
-		context.Background(), nMsg, edge,
+		t.Context(), nMsg, edge,
 	)
 	require.False(t, added)