diff --git a/test/allocation_test.jl b/test/allocation_test.jl
index 9e303a3..0d31234 100644
--- a/test/allocation_test.jl
+++ b/test/allocation_test.jl
@@ -1,25 +1,4 @@
 using AdaptiveRegularization, LinearAlgebra, Test
-
-T = Float64
-S = Vector{T}
-n = 1000
-
-TR = TrustRegion(T(10))
-α = T(100)
-
-for XData in (PDataKARC(S, T, n), PDataTRK(S, T, n), PDataST(S, T, n))
-  @testset "Allocation test in AdaptiveRegularization.decrease for $(typeof(XData))" begin
-    alloc_decrease() = @allocated AdaptiveRegularization.decrease(XData, α, TR)
-    alloc_decrease()
-    @test alloc_decrease() <= 16
-  end
-  @testset "Allocation test in AdaptiveRegularization.decrease for $(typeof(XData))" begin
-    alloc_increase() = @allocated AdaptiveRegularization.increase(XData, α, TR)
-    alloc_increase()
-    @test (@allocated alloc_increase()) <= 16
-  end
-end
-
 using ADNLPModels, NLPModels, OptimizationProblems, Stopping
 
 nlp = OptimizationProblems.ADNLPProblems.arglina()
@@ -31,26 +10,31 @@ g = grad(nlp, x)
 ng = norm(g)
 calls, max_calls = 0, 1000000
 
-for (Data, solve, limit_solve, limit_preprocess) in (
-  (PDataKARC, :solve_modelKARC, 144, 0),
-  (PDataTRK, :solve_modelTRK, 144, 0),
-  (PDataST, :solve_modelST_TR, 224, 0),
+function alloc_preprocess(XData, H, g, ng, calls, max_calls, α)
+  AdaptiveRegularization.preprocess(XData, H, g, ng, calls, max_calls, α)
+  return nothing
+end
+
+function alloc_solve_model(solve, XData, H, g, ng, calls, max_calls, α)
+  solve(XData, H, g, ng, calls, max_calls, α)
+  return nothing
+end
+
+for (Data, solve) in (
+  (PDataKARC, AdaptiveRegularization.solve_modelKARC),
+  (PDataTRK, AdaptiveRegularization.solve_modelTRK),
+  (PDataST, AdaptiveRegularization.solve_modelST_TR),
 )
+  XData = Data(S, T, n)
   @testset "Allocation test in preprocess with $(Data)" begin
-    XData = Data(S, T, n)
-    alloc_preprocess(XData, H, g, ng, calls, max_calls, α) =
-      @allocated AdaptiveRegularization.preprocess(XData, H, g, ng, calls, max_calls, α)
     alloc_preprocess(XData, H, g, ng, calls, max_calls, α)
-    @test alloc_preprocess(XData, H, g, ng, calls, max_calls, α) <= limit_preprocess
-    @show alloc_preprocess(XData, H, g, ng, calls, max_calls, α)
+    al = @allocated alloc_preprocess(XData, H, g, ng, calls, max_calls, α)
+    @test al == 0
   end
 
   @testset "Allocation test in $solve with $(Data)" begin
-    XData = Data(S, T, n)
-    alloc_solve_model(XData, H, g, ng, calls, max_calls, α) =
-      @allocated AdaptiveRegularization.eval(solve)(XData, H, g, ng, calls, max_calls, α)
-    alloc_solve_model(XData, H, g, ng, calls, max_calls, α)
-    @test alloc_solve_model(XData, H, g, ng, calls, max_calls, α) <= limit_solve
-    @show alloc_solve_model(XData, H, g, ng, calls, max_calls, α)
+    alloc_solve_model(solve, XData, H, g, ng, calls, max_calls, α)
+    al = @allocated alloc_solve_model(solve, XData, H, g, ng, calls, max_calls, α)
+    @test al == 0
   end
 end
diff --git a/test/allocation_test_main.jl b/test/allocation_test_main.jl
index c662181..1d5b7fe 100644
--- a/test/allocation_test_main.jl
+++ b/test/allocation_test_main.jl
@@ -1,99 +1,27 @@
-using NLPModels, Stopping, AdaptiveRegularization
+using NLPModelsTest, Stopping, AdaptiveRegularization
 
-mutable struct EmptyNLPModel{T, S} <: AbstractNLPModel{T, S}
-  meta::NLPModelMeta{T, S}
-  counters::Counters
-end
-
-NLPModels.obj(::EmptyNLPModel{T, S}, x) where {T, S} = one(T)
-function NLPModels.grad!(::EmptyNLPModel{T, S}, x, gx::S) where {T, S}
-  gx .= one(T)
-  return gx
-end
-function NLPModels.hprod!(
-  ::EmptyNLPModel,
-  x::AbstractVector{T},
-  v::AbstractVector{T},
-  Hv::AbstractVector{T};
-  obj_weight = one(T),
-) where {T}
-  Hv .= zero(T)
-  return Hv
-end
-function NLPModels.hess_structure!(
-  ::EmptyNLPModel{T, S},
-  rows::AbstractVector,
-  cols::AbstractVector,
-) where {T, S}
-  rows .= one(T)
-  cols .= one(T)
-  return rows, cols
-end
-function NLPModels.hess_coord!(
-  ::EmptyNLPModel{T, S},
-  x::AbstractVector{T},
-  vals::AbstractVector;
-  obj_weight = one(T),
-) where {T, S}
-  vals .= zero(T)
-  return vals
-end
-
-import NLPModels: hess, hess_coord!, hess_coord, hess_op, hess_op!, hprod, hprod!
+nlp = BROWNDEN()
+n, x0 = nlp.meta.nvar, nlp.meta.x0
 
-mutable struct NothingPData{T} <: AdaptiveRegularization.TPData{T}
-  OK::Any
-  d::Any
-  λ::Any
-end
-
-n = 100
+TRnothing = TrustRegion(10.0, max_unsuccinarow = 2)
 
-function NothingPData(::Type{S}, ::Type{T}, n; kwargs...) where {T, S}
-  return NothingPData{T}(true, rand(T, n), one(T))
-end
+S, T = typeof(x0), eltype(x0)
+PData = PDataKARC(S, T, n)
 
-function solve_nothing(X::NothingPData, H, g, ng, calls, max_calls, α::T) where {T}
-  X.d .= g
-  X.λ = zero(T)
-  return X.d, X.λ
+function alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing)
+  TRARC(stp, PData, workspace, TRnothing, solve_model = AdaptiveRegularization.solve_modelKARC)
+  return nothing
 end
 
-x0 = rand(n)
-nlp = EmptyNLPModel{eltype(x0), typeof(x0)}(NLPModelMeta(n), Counters())
-
-for (Workspace, limit) in (
-  (HessDense, 286624),
-  (HessSparse, 84016),
-  (HessSparseCOO, 0), # independent of `n`
-  (HessOp, 2304), # independent of `n`
+@testset "Test TRARC allocations using $Hess" for (Hess, limit) in (
+  (HessOp, 1904),
+  (HessSparseCOO, 944),
 )
-  who = Workspace(nlp, n)
-  alloc_hessian(who, nlp, x0) = @allocated AdaptiveRegularization.hessian!(who, nlp, x0)
-  alloc_hessian(who, nlp, x0)
-  @test (alloc_hessian(who, nlp, x0)) <= limit
-  @show alloc_hessian(who, nlp, x0)
+  stp = NLPStopping(nlp)
+  stp.meta.max_iter = 5
+  workspace = AdaptiveRegularization.TRARCWorkspace(nlp, Hess)
+  alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing)
+  al = @allocated alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing)
+  println("Allocations of TRARC using $Hess is $al .")
+  @show al
 end
-
-stp = NLPStopping(nlp)
-stp.meta.max_iter = 5
-TRnothing = TrustRegion(10.0, max_unsuccinarow = 2)
-
-nlp = stp.pb
-S, T = typeof(x0), eltype(x0)
-PData = NothingPData(S, T, nlp.meta.nvar)
-workspace = AdaptiveRegularization.TRARCWorkspace(nlp, HessOp)
-
-alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing, solve_nothing) =
-  @allocated TRARC(stp, PData, workspace, TRnothing, solve_model = solve_nothing)
-alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing, solve_nothing)
-alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing, solve_nothing)
-@show alloc_AdaptiveRegularization(stp, PData, workspace, TRnothing, solve_nothing) # 11192
-
-workspace = AdaptiveRegularization.TRARCWorkspace(nlp, HessSparseCOO)
-
-alloc_AdaptiveRegularization_COO(stp, PData, workspace, TRnothing, solve_nothing) =
-  @allocated TRARC(stp, PData, workspace, TRnothing, solve_model = solve_nothing)
-alloc_AdaptiveRegularization_COO(stp, PData, workspace, TRnothing, solve_nothing)
-alloc_AdaptiveRegularization_COO(stp, PData, workspace, TRnothing, solve_nothing)
-@show alloc_AdaptiveRegularization_COO(stp, PData, workspace, TRnothing, solve_nothing) # 11192
diff --git a/test/allocation_test_utils.jl b/test/allocation_test_utils.jl
new file mode 100644
index 0000000..eb094df
--- /dev/null
+++ b/test/allocation_test_utils.jl
@@ -0,0 +1,58 @@
+using AdaptiveRegularization, LinearAlgebra, Test
+
+T = Float64
+S = Vector{T}
+n = 1000
+
+TR = TrustRegion(T(10))
+α = T(100)
+
+# Test increase / decrease
+
+function alloc_decrease(XData, α, TR)
+  AdaptiveRegularization.decrease(XData, α, TR)
+  return nothing
+end
+
+function alloc_increase(XData, α, TR)
+  AdaptiveRegularization.increase(XData, α, TR)
+  return nothing
+end
+
+for XData in (PDataKARC(S, T, n), PDataTRK(S, T, n), PDataST(S, T, n))
+  @testset "Allocation test in AdaptiveRegularization.decrease for $(typeof(XData))" begin
+    alloc_decrease(XData, α, TR)
+    al = @allocated alloc_decrease(XData, α, TR)
+    @test al == 0
+  end
+  @testset "Allocation test in AdaptiveRegularization.decrease for $(typeof(XData))" begin
+    alloc_increase(XData, α, TR)
+    al = @allocated alloc_increase(XData, α, TR)
+    @test al == 0
+  end
+end
+
+# Test hessian evaluation in-place
+
+using NLPModelsTest
+nlp = NLPModelsTest.BROWNDEN()
+n = nlp.meta.nvar
+x0 = nlp.meta.x0
+
+function alloc_hessian(who, nlp, x0)
+  AdaptiveRegularization.hessian!(who, nlp, x0)
+  return nothing
+end
+
+@testset "Test in-place hessian allocations" for (Workspace, limit) in (
+  (HessDense, 1952),
+  (HessSparse, 944),
+  (HessSparseCOO, 0),
+  (HessOp, 960),
+)
+  who = Workspace(nlp, n)
+  alloc_hessian(who, nlp, x0)
+  al = @allocated alloc_hessian(who, nlp, x0)
+  @test al <= limit
+  println("Allocations for $Workspace is $al.")
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index 48ce6cb..edab6e1 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -39,6 +39,7 @@ for solver in ALL_solvers
 end
 
 if VERSION >= v"1.7.0"
+  include("allocation_test_utils.jl")
   include("allocation_test.jl")
   include("allocation_test_main.jl")
 end