From b26e6971825f2e78e2d2435603816d8897cc8930 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 1 Dec 2014 14:41:39 +0100
Subject: Make SparseMatrix::coeff() returns a const reference and add a non
 const version of SparseMatrix::diagonal()

---
 test/sparse_basic.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'test/sparse_basic.cpp')

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index 2380dfa34..097959c84 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -472,6 +472,12 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
     SparseMatrixType m2(rows, cols);
     initSparse<Scalar>(density, refMat2, m2);
     VERIFY_IS_APPROX(m2.diagonal(), refMat2.diagonal().eval());
+    VERIFY_IS_APPROX(const_cast<const SparseMatrixType&>(m2).diagonal(), refMat2.diagonal().eval());
+    
+    initSparse<Scalar>(density, refMat2, m2, ForceNonZeroDiag);
+    m2.diagonal()      += refMat2.diagonal();
+    refMat2.diagonal() += refMat2.diagonal();
+    VERIFY_IS_APPROX(m2, refMat2);
   }
   
   // test conservative resize
-- 
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