Fix kernel test again

src/tests/test_kernel.cpp

@@ -29,9 +29,8 @@ BOOST_AUTO_TEST_CASE(test_kernel_SE_ARD)
 
     kernel::SquaredExpARD<Params> se(2);
     Eigen::VectorXd hp(se.h_params_size());
-    // kernel does not expect in log space anymore
-    hp(0) = 1;
-    hp(1) = 1;
+    hp(0) = 0;
+    hp(1) = 0;
 
     se.set_h_params(hp);
 
@@ -43,7 +42,7 @@ BOOST_AUTO_TEST_CASE(test_kernel_SE_ARD)
 
     BOOST_CHECK(std::abs(s1 - std::exp(-0.5 * (v1.transpose() * v2)[0])) < 1e-5);
 
-    hp(0) = std::exp(1);
+    hp(0) = 1;
     se.set_h_params(hp);
     double s2 = se(v1, v2);
     BOOST_CHECK(s1 < s2);
@@ -51,10 +50,10 @@ BOOST_AUTO_TEST_CASE(test_kernel_SE_ARD)
     Params::kernel_squared_exp_ard::set_k(1);
     se = kernel::SquaredExpARD<Params>(2);
     hp = Eigen::VectorXd(se.h_params_size());
-    hp(0) = 1;
-    hp(1) = 1;
-    hp(2) = 0;
-    hp(3) = 0;
+    hp(0) = 0;
+    hp(1) = 0;
+    hp(2) = -std::numeric_limits<double>::max();
+    hp(3) = -std::numeric_limits<double>::max();
 
     se.set_h_params(hp);
     BOOST_CHECK(s1 == se(v1, v2));