From 5f178e54e9341c2c1d558b7755c71d59277c02a4 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 14 Jun 2013 10:52:19 +0200
Subject: [PATCH] Extend sparse-block unit test to explicitly cover bug #584

---
 test/sparse_basic.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index f2f14b2c7..e300f2537 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -308,6 +308,17 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
     else
       VERIFY_IS_APPROX(m2.block(0,j0,rows,n0)+m2.block(0,j1,rows,n0),
                       refMat2.block(0,j0,rows,n0)+refMat2.block(0,j1,rows,n0));
+      
+    int i = internal::random<int>(0,m2.outerSize()-1);
+    if(SparseMatrixType::IsRowMajor) {
+      m2.innerVector(i) = m2.innerVector(i) * s1;
+      refMat2.row(i) = refMat2.row(i) * s1;
+      VERIFY_IS_APPROX(m2,refMat2);
+    } else {
+      m2.innerVector(i) = m2.innerVector(i) * s1;
+      refMat2.col(i) = refMat2.col(i) * s1;
+      VERIFY_IS_APPROX(m2,refMat2);
+    }
   }
 
   // test prune