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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2012 Giacomo Po <gpo@ucla.edu>
+// Copyright (C) 2011 Gael Guennebaud <g.gael@free.fr>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#include <cmath>
+
+#include "../../test/sparse_solver.h"
+#include <Eigen/IterativeSolvers>
+
+template <typename T>
+void test_minres_T() {
+  // Identity preconditioner
+  MINRES<SparseMatrix<T>, Lower, IdentityPreconditioner> minres_colmajor_lower_I;
+  MINRES<SparseMatrix<T>, Upper, IdentityPreconditioner> minres_colmajor_upper_I;
+
+  // Diagonal preconditioner
+  MINRES<SparseMatrix<T>, Lower, DiagonalPreconditioner<T> > minres_colmajor_lower_diag;
+  MINRES<SparseMatrix<T>, Upper, DiagonalPreconditioner<T> > minres_colmajor_upper_diag;
+  MINRES<SparseMatrix<T>, Lower | Upper, DiagonalPreconditioner<T> > minres_colmajor_uplo_diag;
+
+  // call tests for SPD matrix
+  CALL_SUBTEST(check_sparse_spd_solving(minres_colmajor_lower_I));
+  CALL_SUBTEST(check_sparse_spd_solving(minres_colmajor_upper_I));
+
+  CALL_SUBTEST(check_sparse_spd_solving(minres_colmajor_lower_diag));
+  CALL_SUBTEST(check_sparse_spd_solving(minres_colmajor_upper_diag));
+  CALL_SUBTEST(check_sparse_spd_solving(minres_colmajor_uplo_diag));
+
+  // TO DO: symmetric semi-definite matrix
+  // TO DO: symmetric indefinite matrix
+}
+
+EIGEN_DECLARE_TEST(minres) {
+  CALL_SUBTEST_1(test_minres_T<double>());
+  //  CALL_SUBTEST_2(test_minres_T<std::complex<double> >());
+}