diff --git a/src/test/cunit.c b/src/test/cunit.c
index 95a89b4..b2913a4 100644
--- a/src/test/cunit.c
+++ b/src/test/cunit.c
@@ -95,7 +95,11 @@ int main(void)
 		(NULL == CU_add_test(pSuite, "test3 parsing .obj",
 							 test_parse_obj3)) ||
 		(NULL == CU_add_test(pSuite, "test4 parsing .obj",
-							 test_parse_obj4))
+							 test_parse_obj4)) ||
+		(NULL == CU_add_test(pSuite, "test1 finding center ob obj",
+							 test_find_center1)) ||
+		(NULL == CU_add_test(pSuite, "test2 finding center ob obj",
+							 test_find_center2))
 		) {
 
 		CU_cleanup_registry();
diff --git a/src/test/cunit.h b/src/test/cunit.h
index c55e485..9e7b9c8 100644
--- a/src/test/cunit.h
+++ b/src/test/cunit.h
@@ -35,3 +35,6 @@ void test_parse_obj1(void);
 void test_parse_obj2(void);
 void test_parse_obj3(void);
 void test_parse_obj4(void);
+
+void test_find_center1(void);
+void test_find_center2(void);
diff --git a/src/test/cunit_half_edge.c b/src/test/cunit_half_edge.c
index 810d7c0..42eae54 100644
--- a/src/test/cunit_half_edge.c
+++ b/src/test/cunit_half_edge.c
@@ -427,3 +427,38 @@ void test_parse_obj4(void)
 
 	CU_ASSERT_PTR_NULL(obj);
 }
+
+void test_find_center1(void)
+{
+	char const * const string = ""
+		"v 9.0 10.0 11.0\n"
+		"v 11.0 10.0 11.0\n"
+		"v 9.0 11.0 11.0\n"
+		"v 11.0 11.0 11.0\n"
+		"v 9.0 11.0 9.0\n"
+		"v 11.0 11.0 9.0\n"
+		"v 9.0 10.0 9.0\n"
+		"v 11.0 10.0 9.0\n"
+		"f 1 2 4 3\n"
+		"f 3 4 6 5\n"
+		"f 5 6 8 7\n"
+		"f 7 8 2 1\n"
+		"f 2 8 6 4\n"
+		"f 7 1 3 5\n";
+
+	HE_obj *obj = parse_obj(string);
+	HE_vert *newvert = find_center(obj);
+
+	CU_ASSERT_PTR_NOT_NULL(obj);
+
+	CU_ASSERT_EQUAL(newvert->x, 10.0);
+	CU_ASSERT_EQUAL(newvert->y, 10.5);
+	CU_ASSERT_EQUAL(newvert->z, 10.0);
+}
+
+void test_find_center2(void)
+{
+	HE_vert *newvert = find_center(NULL);
+
+	CU_ASSERT_PTR_NULL(newvert);
+}