1 files changed, 70 insertions, 0 deletions
diff --git a/tests/objvariant/tyaoption.nim b/tests/objvariant/tyaoption.nim
new file mode 100644
index 000000000..80bfa4bae
--- /dev/null
+++ b/tests/objvariant/tyaoption.nim
@@ -0,0 +1,70 @@
+discard """
+  output: '''some(str), some(5), none
+some(5!)
+some(10)
+34'''
+"""
+
+import strutils
+
+type Option[A] = object
+  case isDefined*: bool
+    of true:
+      value*: A
+    of false:
+      nil
+
+proc some[A](value: A): Option[A] =
+  Option[A](isDefined: true, value: value)
+
+proc none[A](): Option[A] =
+  Option[A](isDefined: false)
+
+proc `$`[A](o: Option[A]): string =
+  if o.isDefined:
+    "some($1)" % [$o.value]
+  else:
+    "none"
+
+let x = some("str")
+let y = some(5)
+let z = none[int]()
+
+echo x, ", ", y, ", ", z
+
+proc intOrString[A : int | string](o: Option[A]): Option[A] =
+  when A is int:
+    some(o.value + 5)
+  elif A is string:
+    some(o.value & "!")
+  else:
+    o
+
+#let a1 = intOrString(none[String]())
+let a2 = intOrString(some("5"))
+let a3 = intOrString(some(5))
+#echo a1
+echo a2
+echo a3
+
+
+# bug #10033
+
+type
+  Token = enum
+    Int,
+    Float
+
+  Base = ref object of RootObj
+    case token: Token
+    of Int:
+      bInt: int
+    of Float:
+      bFloat: float
+
+  Child = ref object of Base
+
+let c = new Child
+c.token = Int
+c.bInt = 34
+echo c.bInt