1 files changed, 16 insertions, 0 deletions
diff --git a/test/unit/eval/typval_spec.lua b/test/unit/eval/typval_spec.lua
index 94ee394009..d308ee5794 100644
--- a/test/unit/eval/typval_spec.lua
+++ b/test/unit/eval/typval_spec.lua
@@ -1324,5 +1324,21 @@ describe('typval.c', function()
         end)
       end)
     end)
+    describe('idx_of_item()', function()
+      it('works', function()
+        local l = list(1, 2, 3, 4, 5)
+        local l2 = list(42, empty_list)
+        local lis = list_items(l)
+        local lis2 = list_items(l2)
+
+        for i, li in ipairs(lis) do
+          eq(i - 1, lib.tv_list_idx_of_item(l, li))
+        end
+        eq(-1, lib.tv_list_idx_of_item(l, lis2[1]))
+        eq(-1, lib.tv_list_idx_of_item(l, nil))
+        eq(-1, lib.tv_list_idx_of_item(nil, nil))
+        eq(-1, lib.tv_list_idx_of_item(nil, lis[1]))
+      end)
+    end)
   end)
 end)