diff --git a/tests/test-range.c b/tests/test-range.c
index 145cf426..68d454d5 100644
--- a/tests/test-range.c
+++ b/tests/test-range.c
@@ -92,6 +92,60 @@ static struct {
     GCAL_RANGE_MATCH,
   },
 
+  /* Superset */
+  {
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    { "2020-03-05T00:00:00", "2020-03-08T00:00:00" },
+    GCAL_RANGE_SUPERSET,
+    GCAL_RANGE_AFTER,
+  },
+  {
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    { "2020-03-07T00:00:00", "2020-03-08T00:00:00" },
+    GCAL_RANGE_SUPERSET,
+    GCAL_RANGE_BEFORE,
+  },
+  {
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    { "2020-03-07T00:00:00", "2020-03-10T00:00:00" },
+    GCAL_RANGE_SUPERSET,
+    GCAL_RANGE_BEFORE,
+  },
+
+  /* Subset */
+  {
+    { "2020-03-05T00:00:00", "2020-03-08T00:00:00" },
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    GCAL_RANGE_SUBSET,
+    GCAL_RANGE_BEFORE,
+  },
+  {
+    { "2020-03-07T00:00:00", "2020-03-08T00:00:00" },
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    GCAL_RANGE_SUBSET,
+    GCAL_RANGE_AFTER,
+  },
+  {
+    { "2020-03-07T00:00:00", "2020-03-10T00:00:00" },
+    { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },
+    GCAL_RANGE_SUBSET,
+    GCAL_RANGE_AFTER,
+  },
+
+  /* Intersection */
+  {
+    { "2020-03-05T00:00:00", "2020-03-08T00:00:00" },
+    { "2020-03-07T00:00:00", "2020-03-10T00:00:00" },
+    GCAL_RANGE_INTERSECTS,
+    GCAL_RANGE_BEFORE,
+  },
+  {
+    { "2020-03-07T00:00:00", "2020-03-10T00:00:00" },
+    { "2020-03-05T00:00:00", "2020-03-08T00:00:00" },
+    GCAL_RANGE_INTERSECTS,
+    GCAL_RANGE_AFTER,
+  },
+
   /* No Overlap */
   {
     { "2020-03-05T00:00:00", "2020-03-10T00:00:00" },