diff --git a/unit-tests/space_map_disk_t.cc b/unit-tests/space_map_disk_t.cc
index 5edc1e7..fce97f6 100644
--- a/unit-tests/space_map_disk_t.cc
+++ b/unit-tests/space_map_disk_t.cc
@@ -43,6 +43,14 @@ namespace {
 		return tm;
 	}
 
+	class sm_core_creator {
+	public:
+		static space_map::ptr
+		create() {
+			return space_map::ptr(new persistent_data::core_map(NR_BLOCKS));
+		}
+	};
+
 	class sm_disk_creator {
 	public:
 		static persistent_space_map::ptr
@@ -235,6 +243,11 @@ namespace {
 
 //----------------------------------------------------------------
 
+BOOST_AUTO_TEST_CASE(test_sm_core)
+{
+	do_tests<sm_core_creator>(space_map_tests);
+}
+
 BOOST_AUTO_TEST_CASE(test_sm_disk)
 {
 	do_tests<sm_disk_creator>(space_map_tests);