fixing unit tests

Tests/Extrapolator/MaterialCollectionTests.cpp

@@ -70,8 +70,8 @@ namespace Test {
   StraightLinePropagator slpropagator(std::move(slstepper),
                                       std::move(navigatorSL));
 
-  const int ntests           = 1000;  // test with 0.4 lower boundary - 952;
-  const int skip             = 0;     // test with 0.4 lower boundary - 951;
+  const int ntests           = 10;  // test with 0.4 lower boundary - 952;
+  const int skip             = 0;   // test with 0.4 lower boundary - 951;
   bool      debugModeFwd     = false;
   bool      debugModeBwd     = false;
   bool      debugModeFwdStep = false;

Tests/Extrapolator/NavigatorTests.cpp

@@ -143,10 +143,11 @@ namespace Test {
 
     // create a navigator
     Navigator navigator;
-    navigator.trackingGeometry = tGeometry;
-    navigator.resolveSensitive = true;
-    navigator.resolveMaterial  = true;
-    navigator.resolvePassive   = false;
+    navigator.initialStepFactor = 1.;
+    navigator.trackingGeometry  = tGeometry;
+    navigator.resolveSensitive  = true;
+    navigator.resolveMaterial   = true;
+    navigator.resolvePassive    = false;
 
     // position and direction vector
     Vector3D position(0., 0., 0);

Tests/Surfaces/LineSurfaceTests.cpp

@@ -107,8 +107,8 @@ namespace Test {
     const Vector3D      direction{0., 1., 2.};
     NavigationDirection navDir = anyDirection;
     BoundaryCheck       bcheck(false);
-    auto                intersection
-        = line.intersectionEstimate({0., 0., 0.}, direction, navDir, bcheck);
+    auto                intersection = line.intersectionEstimate(
+        {0., 0., 0.}, direction.unit(), navDir, bcheck);
     BOOST_CHECK(intersection.valid);
     Vector3D expectedIntersection(0, 1., 2.);
     BOOST_TEST(intersection.position