sweep: allow published input to be marked as PublishFailed

If anything happens during the fee bumping process, and causes the input
to be failed, we should be able to mark it as `PublishFailed`.

sweep/sweeper_test.go

@@ -2274,8 +2274,8 @@ func TestMarkInputsPublished(t *testing.T) {
 }
 
 // TestMarkInputsPublishFailed checks that given a list of inputs with
-// different states, only the state `PendingPublish` will be marked as
-// `PublishFailed`.
+// different states, only the state `PendingPublish` and `Published` will be
+// marked as `PublishFailed`.
 func TestMarkInputsPublishFailed(t *testing.T) {
 	t.Parallel()
 
@@ -2315,6 +2315,14 @@ func TestMarkInputsPublishFailed(t *testing.T) {
 		state: PendingPublish,
 	}
 
+	// inputPublished specifies an input that's published.
+	inputPublished := &wire.TxIn{
+		PreviousOutPoint: wire.OutPoint{Index: 4},
+	}
+	s.inputs[inputPublished.PreviousOutPoint] = &SweeperInput{
+		state: Published,
+	}
+
 	// Mark the test inputs. We expect the non-exist input and the
 	// inputInit to be skipped, and the final input to be marked as
 	// published.
@@ -2322,10 +2330,11 @@ func TestMarkInputsPublishFailed(t *testing.T) {
 		inputNotExist.PreviousOutPoint,
 		inputInit.PreviousOutPoint,
 		inputPendingPublish.PreviousOutPoint,
+		inputPublished.PreviousOutPoint,
 	})
 
 	// We expect unchanged number of pending inputs.
-	require.Len(s.inputs, 2)
+	require.Len(s.inputs, 3)
 
 	// We expect the init input's state to stay unchanged.
 	require.Equal(Init,
@@ -2336,6 +2345,10 @@ func TestMarkInputsPublishFailed(t *testing.T) {
 	require.Equal(PublishFailed,
 		s.inputs[inputPendingPublish.PreviousOutPoint].state)
 
+	// We expect the published input's is now marked as publish failed.
+	require.Equal(PublishFailed,
+		s.inputs[inputPublished.PreviousOutPoint].state)
+
 	// Assert mocked statements are executed as expected.
 	mockStore.AssertExpectations(t)
 }