add test case to #flatten

2026-06-08 16:11:16 +00:00 · 2014-08-03 12:50:23 +09:00
parent 2836acf045
commit 7861034bcf
1 changed files with 8 additions and 0 deletions
@@ -155,6 +155,14 @@ assert("Set#flatten") do
  assert_raise(ArgumentError) {
    set1.flatten
  }
+
+  # test4; miscellaneous
+  empty = Set[]
+  set = Set[Set[empty, "a"], Set[empty, "b"]]
+
+  assert_nothing_raised {
+    set.flatten
+  }
 end

 assert("Set#flatten!") do