From 8a24f22edd9c16d09d1ee5be944f638d6dd4427e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Legat?= <benoit.legat@gmail.com>
Date: Wed, 28 Oct 2026 19:01:43 +0100
Subject: [PATCH 1/2] Add a test of sum with init

---
 test/Utilities/test_mutable_arithmetics.jl | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test/Utilities/test_mutable_arithmetics.jl b/test/Utilities/test_mutable_arithmetics.jl
index 33a30d72c5..25a1bd6038 100644
--- a/test/Utilities/test_mutable_arithmetics.jl
+++ b/test/Utilities/test_mutable_arithmetics.jl
@@ -190,6 +190,20 @@ function test_VariableIndex()
     MA.Test.@test_rewrite(x - a)
 end
 
+function test_VariableIndex_sum_init()
+    x = MOI.VariableIndex.(1:3)
+    for T in (Int, Float32, Float64)
+        for init in (zero(T), T(2))
+            f = sum(x; init)
+            expected =
+                MOI.ScalarAffineFunction(MOI.ScalarAffineTerm.(one(T), x), init)
+            @test f isa MOI.ScalarAffineFunction{T}
+            @test f ≈ expected
+        end
+    end
+    return
+end
+
 function test_ScalarAffineFunction()
     T = Int
     MA.Test.int_test(

From a5011ac37ee9d24d2de84fdcf61ae2e4a6ada54b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Legat?= <benoit.legat@gmail.com>
Date: Wed, 28 Oct 2026 19:21:19 +0100
Subject: [PATCH 2/2] Only test with zero

---
 test/Utilities/test_mutable_arithmetics.jl | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/test/Utilities/test_mutable_arithmetics.jl b/test/Utilities/test_mutable_arithmetics.jl
index 25a1bd6038..041d0c15bc 100644
--- a/test/Utilities/test_mutable_arithmetics.jl
+++ b/test/Utilities/test_mutable_arithmetics.jl
@@ -193,13 +193,12 @@ end
 function test_VariableIndex_sum_init()
     x = MOI.VariableIndex.(1:3)
     for T in (Int, Float32, Float64)
-        for init in (zero(T), T(2))
-            f = sum(x; init)
-            expected =
-                MOI.ScalarAffineFunction(MOI.ScalarAffineTerm.(one(T), x), init)
-            @test f isa MOI.ScalarAffineFunction{T}
-            @test f ≈ expected
-        end
+        init = zero(T)
+        f = sum(x; init)
+        expected =
+            MOI.ScalarAffineFunction(MOI.ScalarAffineTerm.(one(T), x), init)
+        @test f isa MOI.ScalarAffineFunction{T}
+        @test f ≈ expected
     end
     return
 end