From 7e029d1d6ec0eba495a31c72a328ee8160338e44 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 29 Aug 2016 12:06:37 +0200
Subject: bug #1271: add SparseMatrix::coeffs() methods returning a 1D view of
 the non zero coefficients.

---
 test/sparse_basic.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'test/sparse_basic.cpp')

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index 10309b3a9..7b5f3eb38 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -207,6 +207,16 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
     VERIFY_IS_APPROX((m1 = m1.transpose()), (refM1 = refM1.transpose().eval()));
     VERIFY_IS_APPROX((m1 = -m1.transpose()), (refM1 = -refM1.transpose().eval()));
     VERIFY_IS_APPROX((m1 += -m1), (refM1 += -refM1));
+
+    if(m1.isCompressed())
+    {
+      VERIFY_IS_APPROX(m1.coeffs().sum(), m1.sum());
+      m1.coeffs() += s1;
+      for(Index j = 0; j<m1.outerSize(); ++j)
+        for(typename SparseMatrixType::InnerIterator it(m1,j); it; ++it)
+          refM1(it.row(), it.col()) += s1;
+      VERIFY_IS_APPROX(m1, refM1);
+    }
   }
 
   // test transpose
-- 
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