commit 8456bbbadb8175a9e20d804b61de4da7d951d7f7
author Gael Guennebaud <g.gael@free.fr> Wed May 18 16:53:28 2016 +0200
committer Gael Guennebaud <g.gael@free.fr> Wed May 18 16:53:28 2016 +0200
tree d1d13d8c0a3ed74127eb51ab4ab012921a9007da
parent b507b8232643c2054397cbf58da3ec55c10d9133

bug #1224: fix regression in (dense*dense).sparseView() by specializing evaluator<SparseView<Product>> for sparse products only.

test/sparse_basic.cpp

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index 387b817..f28c5b8 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -372,6 +372,12 @@
     SparseMatrixType m2(rows, rows);
     initSparse<Scalar>(density, refMat2, m2);
     VERIFY_IS_APPROX(m2.eval(), refMat2.sparseView().eval());
+
+    // sparse view on expressions:
+    VERIFY_IS_APPROX((s1*m2).eval(), (s1*refMat2).sparseView().eval());
+    VERIFY_IS_APPROX((m2+m2).eval(), (refMat2+refMat2).sparseView().eval());
+    VERIFY_IS_APPROX((m2*m2).eval(), (refMat2.lazyProduct(refMat2)).sparseView().eval());
+    VERIFY_IS_APPROX((m2*m2).eval(), (refMat2*refMat2).sparseView().eval());
   }
 
   // test diagonal