From 9201bac71424de05d78e530765058aa504fb8234 Mon Sep 17 00:00:00 2001
From: mtfishman <mfishman@flatironinstitute.org>
Date: Thu, 28 Mar 2024 15:05:09 -0400
Subject: [PATCH] Try fixing tests

---
 src/apply.jl                                         | 2 +-
 src/solvers/alternating_update/alternating_update.jl | 4 +++-
 src/solvers/alternating_update/region_update.jl      | 4 +++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/apply.jl b/src/apply.jl
index 1201cbb7..163c7454 100644
--- a/src/apply.jl
+++ b/src/apply.jl
@@ -20,7 +20,7 @@ using ITensors.ContractionSequenceOptimization: optimal_contraction_sequence
 using ITensors.ITensorMPS: siteinds
 using LinearAlgebra: eigen, norm, svd
 using NamedGraphs: NamedEdge
-using Observers: insert_function!
+using Observers: Observers
 
 function sqrt_and_inv_sqrt(
   A::ITensor; ishermitian=false, cutoff=nothing, regularization=nothing
diff --git a/src/solvers/alternating_update/alternating_update.jl b/src/solvers/alternating_update/alternating_update.jl
index 7c423b0c..6d419366 100644
--- a/src/solvers/alternating_update/alternating_update.jl
+++ b/src/solvers/alternating_update/alternating_update.jl
@@ -1,3 +1,5 @@
+using Observers: Observers
+
 function alternating_update(
   operator,
   init_state::AbstractTTN;
@@ -77,7 +79,7 @@ function alternating_update(
       end
     end
 
-    update!(sweep_observer!; state, which_sweep, sweep_time, outputlevel, sweep_plans)
+    Observers.update!(sweep_observer!; state, which_sweep, sweep_time, outputlevel, sweep_plans)
     !isnothing(sweep_printer) &&
       sweep_printer(; state, which_sweep, sweep_time, outputlevel, sweep_plans)
     checkdone(;
diff --git a/src/solvers/alternating_update/region_update.jl b/src/solvers/alternating_update/region_update.jl
index 1085fa0a..ae2b2d78 100644
--- a/src/solvers/alternating_update/region_update.jl
+++ b/src/solvers/alternating_update/region_update.jl
@@ -1,3 +1,5 @@
+using Observers: Observers
+
 #ToDo: generalize beyond 2-site
 #ToDo: remove concept of orthogonality center for generality
 function current_ortho(sweep_plan, which_region_update)
@@ -122,7 +124,7 @@ function region_update(
     region_kwargs...,
     internal_kwargs...,
   )
-  update!(region_observer!; all_kwargs...)
+  Observers.update!(region_observer!; all_kwargs...)
   !(isnothing(region_printer)) && region_printer(; all_kwargs...)
 
   return state, projected_operator