From 6270d4467c88664463ee6f03ffa73bce408128ea Mon Sep 17 00:00:00 2001
From: Jonas Hahnfeld <jonas.hahnfeld@cern.ch>
Date: Mon, 19 Oct 2026 15:39:38 +0200
Subject: [PATCH] [ntuple] Add test with SoALeafNewNoRenameRule

---
 tree/ntuple/test/ntuple_soa.cxx | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/tree/ntuple/test/ntuple_soa.cxx b/tree/ntuple/test/ntuple_soa.cxx
index 6bf4f198199f8..5181e17a5e907 100644
--- a/tree/ntuple/test/ntuple_soa.cxx
+++ b/tree/ntuple/test/ntuple_soa.cxx
@@ -623,6 +623,31 @@ TEST(RNTuple, SoARename)
       EXPECT_FLOAT_EQ(6.0, leafSoA->fLeaf[1]);
    }
 
+   {
+      auto model = ROOT::RNTupleModel::Create();
+      model->AddField(std::make_unique<RSoAField>("leaf", "SoALeafNewNoRenameRule"));
+      auto reader = ROOT::RNTupleReader::Open(std::move(model), "ntpl", fileGuard.GetPath());
+
+      // We cannot use "Show()" because that will reconstruct the original model as a display model, it will not
+      // use the imposed model.
+
+      auto leafSoA = reader->GetModel().GetDefaultEntry().GetPtr<SoALeafNewNoRenameRule>("leaf");
+      reader->LoadEntry(0);
+
+      EXPECT_EQ(2u, leafSoA->fBase.size());
+      EXPECT_EQ(2u, leafSoA->fNew.size());
+      EXPECT_EQ(2u, leafSoA->fIntermediate.size());
+      EXPECT_EQ(2u, leafSoA->fLeaf.size());
+      EXPECT_FLOAT_EQ(1.0, leafSoA->fBase[0]);
+      EXPECT_FLOAT_EQ(2.0, leafSoA->fBase[1]);
+      EXPECT_FLOAT_EQ(0.0, leafSoA->fNew[0]);
+      EXPECT_FLOAT_EQ(0.0, leafSoA->fNew[1]);
+      EXPECT_FLOAT_EQ(3.0, leafSoA->fIntermediate[0]);
+      EXPECT_FLOAT_EQ(4.0, leafSoA->fIntermediate[1]);
+      EXPECT_FLOAT_EQ(5.0, leafSoA->fLeaf[0]);
+      EXPECT_FLOAT_EQ(6.0, leafSoA->fLeaf[1]);
+   }
+
    {
       auto model = ROOT::RNTupleModel::Create();
       model->AddField(std::make_unique<RSoAField>("leaf", "SoALeafLikeNew"));