Added debug only unit test for nesting ops - just run ./check nesting.

1 files changed, 53 insertions, 0 deletions

diff --git a/test/nesting_ops.cpp b/test/nesting_ops.cpp
new file mode 100644
index 000000000..4f6856108
--- /dev/null
+++ b/test/nesting_ops.cpp
@@ -0,0 +1,53 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#include "main.h"
+
+template <typename MatrixType> void run_nesting_ops(const MatrixType& m)
+{
+  typedef typename MatrixType::Scalar Scalar;
+
+#ifdef NDEBUG
+  const bool is_debug = false;
+#else
+  const bool is_debug = true;
+#endif
+
+  // Make really sure that we are in debug mode! We don't want any type of
+  // inlining for these tests to pass.
+  VERIFY(is_debug);
+
+  // The only intention of these tests is to ensure that this code does 
+  // not trigger any asserts or segmentation faults... more to come.
+  VERIFY( (m.transpose() * m).diagonal().sum() == (m.transpose() * m).diagonal().sum() );
+  VERIFY( (m.transpose() * m).diagonal().array().abs().sum() == (m.transpose() * m).diagonal().array().abs().sum() );
+}
+
+void test_nesting_ops()
+{
+  CALL_SUBTEST_1(run_nesting_ops(MatrixXf::Random(25,25)));
+  CALL_SUBTEST_2(run_nesting_ops(MatrixXd::Random(25,25)));
+  CALL_SUBTEST_3(run_nesting_ops(Matrix4f::Random()));
+  CALL_SUBTEST_4(run_nesting_ops(Matrix4d::Random()));
+}