added unit tests for sizeof and dynamic memory allocation

1 files changed, 46 insertions, 0 deletions

diff --git a/test/sizeof.cpp b/test/sizeof.cpp
new file mode 100644
index 000000000..4aaeb2df0
--- /dev/null
+++ b/test/sizeof.cpp
@@ -0,0 +1,46 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// 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 verifySizeOf(const MatrixType& m)
+{
+  typedef typename MatrixType::Scalar Scalar;
+  if (MatrixType::RowsAtCompileTime!=Dynamic && MatrixType::ColsAtCompileTime!=Dynamic)
+    VERIFY(sizeof(MatrixType)==sizeof(Scalar)*MatrixType::SizeAtCompileTime);
+  else
+    VERIFY(sizeof(MatrixType)==sizeof(Scalar*) + 2 * sizeof(int));
+}
+
+void test_sizeof()
+{
+  CALL_SUBTEST( verifySizeOf(Matrix<float, 1, 1>()) );
+  CALL_SUBTEST( verifySizeOf(Matrix4d()) );
+  CALL_SUBTEST( verifySizeOf(Matrix<double, 4, 2>()) );
+  CALL_SUBTEST( verifySizeOf(Matrix<bool, 7, 5>()) );
+  CALL_SUBTEST( verifySizeOf(MatrixXcf(3, 3)) );
+  CALL_SUBTEST( verifySizeOf(MatrixXi(8, 12)) );
+  CALL_SUBTEST( verifySizeOf(MatrixXcd(20, 20)) );
+  CALL_SUBTEST( verifySizeOf(Matrix<float, 100, 100>()) );
+}