1 files changed, 56 insertions, 0 deletions
diff --git a/tests/012/oop-seq.tl b/tests/012/oop-seq.tl
new file mode 100644
index 00000000..919f34cc
--- /dev/null
+++ b/tests/012/oop-seq.tl
@@ -0,0 +1,56 @@
+(load "../common")
+
+(defstruct counter-iter-fast ()
+  cur-val
+  step
+  limit
+  (:method iter-item (me)
+    me.cur-val)
+  (:method iter-step (me)
+    (inc me.cur-val me.step)
+    (if (< me.cur-val me.limit) me)))
+
+(defstruct counter-fast ()
+  init
+  step
+  limit
+  (:method iter-begin (me)
+    (if (< me.init me.limit)
+      (new counter-iter-fast
+           cur-val me.init
+           step me.step
+           limit me.limit))))
+
+(defstruct counter-iter-canon ()
+  cur-val
+  step
+  limit
+  (:method iter-item (me)
+    me.cur-val)
+  (:method iter-more (me)
+    (< me.cur-val me.limit))
+  (:method iter-step (me)
+    (inc me.cur-val me.step)
+    me))
+
+(defstruct counter-canon ()
+  init
+  step
+  limit
+  (:method iter-begin (me)
+    (new counter-iter-canon
+         cur-val me.init
+         step me.step
+         limit me.limit)))
+
+(test (list-seq (new counter-canon init 0 step 2 limit 10))
+      (0 2 4 6 8))
+
+(test (list-seq (new counter-fast init 0 step 2 limit 10))
+      (0 2 4 6 8))
+
+(test (list-seq (new counter-canon init 0 step 1 limit 0))
+      nil)
+
+(test (list-seq (new counter-fast init 0 step 1 limit 0))
+      nil)