From 98ce4455ddad01ef028b65f96e232d4b750647f0 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 6 Mar 2013 11:58:22 +0100
Subject: fix sparse vector assignment from a sparse matrix

---
 test/sparse_product.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'test/sparse_product.cpp')

diff --git a/test/sparse_product.cpp b/test/sparse_product.cpp
index 4eae263fa..67a59ecd8 100644
--- a/test/sparse_product.cpp
+++ b/test/sparse_product.cpp
@@ -46,6 +46,9 @@ template<typename SparseMatrixType> void sparse_product()
   double density = (std::max)(8./(rows*cols), 0.1);
   typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrix;
   typedef Matrix<Scalar,Dynamic,1> DenseVector;
+  typedef Matrix<Scalar,1,Dynamic> RowDenseVector;
+  typedef SparseVector<Scalar,0,Index> ColSpVector;
+  typedef SparseVector<Scalar,RowMajor,Index> RowSpVector;
 
   Scalar s1 = internal::random<Scalar>();
   Scalar s2 = internal::random<Scalar>();
@@ -117,8 +120,23 @@ template<typename SparseMatrixType> void sparse_product()
     test_outer<SparseMatrixType,DenseMatrix>::run(m2,m4,refMat2,refMat4);
 
     VERIFY_IS_APPROX(m6=m6*m6, refMat6=refMat6*refMat6);
+    
+    // sparse matrix * sparse vector
+    ColSpVector cv0(cols), cv1;
+    DenseVector dcv0(cols), dcv1;
+    initSparse(2*density,dcv0, cv0);
+    
+    RowSpVector rv0(depth), rv1;
+    RowDenseVector drv0(depth), drv1(rv1);
+    initSparse(2*density,drv0, rv0);
+    
+    VERIFY_IS_APPROX(cv1=rv0*m3, dcv1=drv0*refMat3);
+    VERIFY_IS_APPROX(rv1=rv0*m3, drv1=drv0*refMat3);
+    VERIFY_IS_APPROX(cv1=m3*cv0, dcv1=refMat3*dcv0);
+    VERIFY_IS_APPROX(cv1=m3t.adjoint()*cv0, dcv1=refMat3t.adjoint()*dcv0);
+    VERIFY_IS_APPROX(rv1=m3*cv0, drv1=refMat3*dcv0);
   }
-
+  
   // test matrix - diagonal product
   {
     DenseMatrix refM2 = DenseMatrix::Zero(rows, cols);
-- 
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