[test.la.saddlepoint] add HAVE_EIGEN guard

dune/xt/test/la/saddlepoint.cc

@@ -165,53 +165,55 @@ GTEST_TEST(SaddlePointSolver, test_direct)
   DXTC_EXPECT_FLOAT_EQ(0., (p - data.expected_p_).l2_norm(), 1e-12, 1e-12);
 }
 
-GTEST_TEST(SaddlePointSolver, test_direct_eigen)
+GTEST_TEST(SaddlePointSolver, test_cg_direct_schurcomplement)
 {
-  using Matrix = XT::LA::EigenRowMajorSparseMatrix<double>;
-  using Vector = XT::LA::EigenDenseVector<double>;
+  using Matrix = XT::LA::IstlRowMajorSparseMatrix<double>;
+  using Vector = XT::LA::IstlDenseVector<double>;
   SaddlePointTestData<Matrix, Vector> data;
   XT::LA::SaddlePointSolver<Vector, Matrix> solver(data.A_, data.B_, data.B_, data.C_);
   Vector u(data.f_.size()), p(data.g_.size());
-  solver.apply(data.f_, data.g_, u, p, "direct");
+  solver.apply(data.f_, data.g_, u, p, "cg_direct_schurcomplement");
   DXTC_EXPECT_FLOAT_EQ(0., (u - data.expected_u_).l2_norm(), 1e-12, 1e-12);
   DXTC_EXPECT_FLOAT_EQ(0., (p - data.expected_p_).l2_norm(), 1e-12, 1e-12);
 }
 
-GTEST_TEST(SaddlePointSolver, test_cg_direct_schurcomplement)
+GTEST_TEST(SaddlePointSolver, test_cg_cg_schurcomplement)
 {
   using Matrix = XT::LA::IstlRowMajorSparseMatrix<double>;
   using Vector = XT::LA::IstlDenseVector<double>;
   SaddlePointTestData<Matrix, Vector> data;
   XT::LA::SaddlePointSolver<Vector, Matrix> solver(data.A_, data.B_, data.B_, data.C_);
   Vector u(data.f_.size()), p(data.g_.size());
-  solver.apply(data.f_, data.g_, u, p, "cg_direct_schurcomplement");
+  solver.apply(data.f_, data.g_, u, p, "cg_cg_schurcomplement");
   DXTC_EXPECT_FLOAT_EQ(0., (u - data.expected_u_).l2_norm(), 1e-12, 1e-12);
   DXTC_EXPECT_FLOAT_EQ(0., (p - data.expected_p_).l2_norm(), 1e-12, 1e-12);
 }
 
+#  if HAVE_EIGEN
 
-GTEST_TEST(SaddlePointSolver, test_cg_direct_schurcomplement_eigen)
+GTEST_TEST(SaddlePointSolver, test_direct_eigen)
 {
   using Matrix = XT::LA::EigenRowMajorSparseMatrix<double>;
   using Vector = XT::LA::EigenDenseVector<double>;
   SaddlePointTestData<Matrix, Vector> data;
   XT::LA::SaddlePointSolver<Vector, Matrix> solver(data.A_, data.B_, data.B_, data.C_);
   Vector u(data.f_.size()), p(data.g_.size());
-  solver.apply(data.f_, data.g_, u, p, "cg_direct_schurcomplement");
+  solver.apply(data.f_, data.g_, u, p, "direct");
   DXTC_EXPECT_FLOAT_EQ(0., (u - data.expected_u_).l2_norm(), 1e-12, 1e-12);
   DXTC_EXPECT_FLOAT_EQ(0., (p - data.expected_p_).l2_norm(), 1e-12, 1e-12);
 }
 
-GTEST_TEST(SaddlePointSolver, test_cg_cg_schurcomplement)
+GTEST_TEST(SaddlePointSolver, test_cg_direct_schurcomplement_eigen)
 {
-  using Matrix = XT::LA::IstlRowMajorSparseMatrix<double>;
-  using Vector = XT::LA::IstlDenseVector<double>;
+  using Matrix = XT::LA::EigenRowMajorSparseMatrix<double>;
+  using Vector = XT::LA::EigenDenseVector<double>;
   SaddlePointTestData<Matrix, Vector> data;
   XT::LA::SaddlePointSolver<Vector, Matrix> solver(data.A_, data.B_, data.B_, data.C_);
   Vector u(data.f_.size()), p(data.g_.size());
-  solver.apply(data.f_, data.g_, u, p, "cg_cg_schurcomplement");
+  solver.apply(data.f_, data.g_, u, p, "cg_direct_schurcomplement");
   DXTC_EXPECT_FLOAT_EQ(0., (u - data.expected_u_).l2_norm(), 1e-12, 1e-12);
   DXTC_EXPECT_FLOAT_EQ(0., (p - data.expected_p_).l2_norm(), 1e-12, 1e-12);
 }
 
-#endif
+#  endif // HAVE_EIGEN
+#endif // HAVE_DUNE_ISTL