diff --git a/gmi_cap/CMakeLists.txt b/gmi_cap/CMakeLists.txt
index 1ab03efda..5e2cb3ea2 100644
--- a/gmi_cap/CMakeLists.txt
+++ b/gmi_cap/CMakeLists.txt
@@ -13,7 +13,7 @@ set(HEADERS gmi_cap.h)
 
 add_library(gmi_cap ${SOURCES})
 
-target_link_libraries(gmi_cap PUBLIC gmi pcu capstone_module framework_testing)
+target_link_libraries(gmi_cap PUBLIC gmi pcu lion capstone_module framework_testing)
 
 # Include directories
 target_include_directories(gmi_cap PUBLIC
diff --git a/gmi_cap/gmi_cap.cc b/gmi_cap/gmi_cap.cc
index 851c331ea..ce6495460 100644
--- a/gmi_cap/gmi_cap.cc
+++ b/gmi_cap/gmi_cap.cc
@@ -13,6 +13,7 @@
 #include <gmi.h>
 #include <vector>
 #include <pcu_util.h>
+#include <lionPrint.h>
 
 
 gmi_ent* toGmiEntity(M_GTopo topo)
@@ -219,7 +220,17 @@ static void closest_point(struct gmi_model* m, struct gmi_ent* e,
   (void)e;
   (void)to;
   (void)to_p;
-  printf("_closest_point_ not implemented!\n");
+  cap_model* cm = reinterpret_cast<cap_model*>(m);
+  M_GTopo topo = fromGmiEntity(e);
+  vec3d xyz_in, xyz_out, param_out;
+  xyz_in[0] = from[0]; xyz_in[1] = from[1]; xyz_in[2] = from[2];
+  // Capstone recommends replacing nullptr with `seedparam` -- a known nearby
+  // parametric point. This interface doesn't have that functionality, but if
+  // it becomes added, this call should be updated.
+  MG_API_CALL(cm->geomInterface, get_closest_point_param(topo, xyz_in, nullptr,
+    xyz_out, param_out));
+  to[0] = xyz_out[0]; to[1] = xyz_out[1]; to[2] = xyz_out[2];
+  to_p[0] = param_out[0]; to_p[1] = param_out[1];
 }
 
 static void normal(struct gmi_model* m, struct gmi_ent* e,
@@ -254,10 +265,14 @@ static void first_derivative(struct gmi_model* m, struct gmi_ent* e,
 static int is_point_in_region(struct gmi_model* m, struct gmi_ent* e,
     double point[3])
 {
-  (void)m;
-  (void)e;
-  (void)point;
-  printf("_is_point_in_region_ not implemented!\n");
+  cap_model* cm = (cap_model*) m;
+  std::vector<M_GTopo> topos;
+  MG_API_CALL(cm->geomInterface, find_point_containment(vec3d(point),
+    Geometry::REGION, topos, 0.0));
+  M_GTopo gtopo = fromGmiEntity(e);
+  for (size_t i = 0; i < topos.size(); ++i) {
+    if (topos[i] == gtopo) return 1;
+  }
   return 0;
 }
 
@@ -267,7 +282,20 @@ static int is_in_closure_of(struct gmi_model* m, struct gmi_ent* e,
   (void)m;
   (void)e;
   (void)et;
-  printf("_is_in_closure_of_ not implemented!\n");
+  if (get_dim(m, e) < get_dim(m, et)) {
+    cap_model* cm = (cap_model*)m;
+    M_GTopo ce = fromGmiEntity(e);
+    M_GTopo cet = fromGmiEntity(et);
+    GeometryTopo ce_type;
+    MG_API_CALL(cm->geomInterface, get_topo_type(ce, ce_type));
+    std::vector<M_GTopo> adj;
+    MG_API_CALL(cm->geomInterface, get_adjacency(cet, ce_type, adj));
+    for (size_t i = 0; i < adj.size(); ++i) {
+      if (ce == adj[i]) {
+        return 1;
+      }
+    }
+  }
   return 0;
 }
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 36cbaa07b..7c874b151 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -212,6 +212,8 @@ endif()
 if(ENABLE_CAPSTONE)
   util_exe_func(capVol capVol.cc)
   target_include_directories(capVol PRIVATE "${PROJECT_SOURCE_DIR}/capstone_clis")
+  test_exe_func(cap_inClosureOf cap_inClosureOf.cc)
+  test_exe_func(cap_closestPoint cap_closestPoint.cc)
   if(HAVE_CAPSTONE_SIZINGMETRICTOOL)
     util_exe_func(cap_smooth cap_smooth.cc)
   endif()
diff --git a/test/cap_closestPoint.cc b/test/cap_closestPoint.cc
new file mode 100644
index 000000000..dbde459fe
--- /dev/null
+++ b/test/cap_closestPoint.cc
@@ -0,0 +1,39 @@
+#include <apf.h>
+#include <apfCAP.h>
+#include <gmi_cap.h>
+#include <lionPrint.h>
+#include <pcu_util.h>
+#include <CapstoneModule.h>
+#include <PCU.h>
+
+int main (int argc, char* argv[]) {
+  MPI_Init(&argc, &argv);
+  PCU_Comm_Init();
+  lion_set_verbosity(1);
+  gmi_register_cap();
+
+  PCU_ALWAYS_ASSERT(argc == 2);
+  std::string creFile(argv[1]);
+  // 1. Load model.
+  CapstoneModule cs("cap_inClosureOf", "Geometry Database : SMLIB",
+    "Mesh Database : Create", "Attribution Database : Create");
+  cs.load_files(v_string(1, creFile));
+  // 2. CreateMesh.
+  apf::Mesh2* m = apf::createMesh(cs.get_mesh(), cs.get_geometry());
+
+  PCU_ALWAYS_ASSERT(m->canGetClosestPoint());
+
+  apf::ModelEntity* face = m->findModelEntity(2, 1);
+  apf::Vector3 from(0.3, 0.4, -0.8), to, p;
+  m->getClosestPoint(face, from, to, p);
+  PCU_ALWAYS_ASSERT((to - apf::Vector3(0.3, 0.4, -0.5)).getLength() < 0.0001);
+
+  apf::ModelEntity* edge = m->findModelEntity(1, 1);
+  from = apf::Vector3(0.6, 0.34, 0.6);
+  m->getClosestPoint(edge, from, to, p);
+  PCU_ALWAYS_ASSERT((to - apf::Vector3(0.5, 0.34, 0.5)).getLength() < 0.0001);
+
+  apf::destroyMesh(m);
+  PCU_Comm_Free();
+  MPI_Finalize();
+}
diff --git a/test/cap_inClosureOf.cc b/test/cap_inClosureOf.cc
new file mode 100644
index 000000000..05a2be88a
--- /dev/null
+++ b/test/cap_inClosureOf.cc
@@ -0,0 +1,49 @@
+#include <apf.h>
+#include <apfCAP.h>
+#include <gmi_cap.h>
+#include <lionPrint.h>
+#include <pcu_util.h>
+#include <CapstoneModule.h>
+#include <PCU.h>
+
+int main (int argc, char* argv[]) {
+  MPI_Init(&argc, &argv);
+  PCU_Comm_Init();
+  lion_set_verbosity(1);
+  gmi_register_cap();
+
+  PCU_ALWAYS_ASSERT(argc == 2);
+  std::string creFile(argv[1]);
+  // 1. Load model.
+  CapstoneModule cs("cap_inClosureOf", "Geometry Database : SMLIB",
+    "Mesh Database : Create", "Attribution Database : Create");
+  cs.load_files(v_string(1, creFile));
+  // 2. CreateMesh.
+  apf::Mesh2* m = apf::createMesh(cs.get_mesh(), cs.get_geometry());
+  // 3. Get region 1 ModelEntity*.
+  apf::ModelEntity* rgn = m->findModelEntity(3, 1);
+  PCU_ALWAYS_ASSERT(rgn);
+  // 4. Assert each model entity is in the closure of that region.
+  //FIXME: gmi_iter
+  for (int d = 0; d < 3; ++d) {
+    apf::MeshIterator* it = m->begin(d);
+    for (apf::MeshEntity* e = m->iterate(it); e; e = m->iterate(it)) {
+      apf::ModelEntity* ge = m->toModel(e);
+      PCU_ALWAYS_ASSERT(m->isInClosureOf(ge, rgn));
+    }
+  }
+  // 5. Test face 1 for edges 3, 5, 8, 12 and verts 3, 4, 7, 8.
+  apf::ModelEntity* f1 = m->findModelEntity(2, 1);
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(1, 3), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(1, 5), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(1, 8), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(1, 12), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(0, 3), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(0, 4), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(0, 7), f1));
+  PCU_ALWAYS_ASSERT(m->isInClosureOf(m->findModelEntity(0, 8), f1));
+
+  apf::destroyMesh(m);
+  PCU_Comm_Free();
+  MPI_Finalize();
+}
diff --git a/test/testing.cmake b/test/testing.cmake
index 1d0e617c5..d91f4b0f6 100644
--- a/test/testing.cmake
+++ b/test/testing.cmake
@@ -895,6 +895,8 @@ if(ENABLE_CAPSTONE)
   mpi_test(capVolWing 1 ./capVol -vg 2 ${MESHES}/cap/wing_surf_only.cre)
   mpi_test(capVolCube 1 ./capVol -vg 3 ${MESHES}/cap/cube_surf_only.cre)
   mpi_test(capVolCyl2 1 ./capVol -vg 4 ${MESHES}/cap/cyl_surf_only.cre)
+  mpi_test(cap_inClosureOf 1 ./cap_inClosureOf ${MESHES}/cap/cube_surf_only.cre)
+  mpi_test(cap_closestPoint 1 ./cap_closestPoint ${MESHES}/cap/cube_surf_only.cre)
   if(HAVE_CAPSTONE_SIZINGMETRICTOOL)
     mpi_test(cap_smooth 1 ./cap_smooth)
   endif()