improve hashset

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/modules/hashset/test.lua b/tests/modules/hashset/test.lua
new file mode 100644
index 000000000..a0df5a61d
--- /dev/null
+++ b/tests/modules/hashset/test.lua
@@ -0,0 +1,17 @@
+import("core.base.hashset")
+
+function test_hashset(t)
+    local h = hashset.of(1, 2, 3, 5, 5, 7, 1, 9, 4, 6, 8, 0)
+    t:require(h:size() == 10)
+    t:require_not(h:empty())
+    for item in h:items() do
+        t:require(h:has(item))
+        t:require_not(h:has(item + 10))
+    end
+    local prev = -1
+    for item in h:orderitems() do
+        t:require(item > prev)
+        prev = item
+    end
+end
+