1 files changed, 33 insertions, 0 deletions
diff --git a/src/runtime/proc_runtime_test.go b/src/runtime/proc_runtime_test.go
new file mode 100644
index 0000000..a7bde2c
--- /dev/null
+++ b/src/runtime/proc_runtime_test.go
@@ -0,0 +1,33 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Proc unit tests. In runtime package so can use runtime guts.
+
+package runtime
+
+func RunStealOrderTest() {
+	var ord randomOrder
+	for procs := 1; procs <= 64; procs++ {
+		ord.reset(uint32(procs))
+		if procs >= 3 && len(ord.coprimes) < 2 {
+			panic("too few coprimes")
+		}
+		for co := 0; co < len(ord.coprimes); co++ {
+			enum := ord.start(uint32(co))
+			checked := make([]bool, procs)
+			for p := 0; p < procs; p++ {
+				x := enum.position()
+				if checked[x] {
+					println("procs:", procs, "inc:", enum.inc)
+					panic("duplicate during enumeration")
+				}
+				checked[x] = true
+				enum.next()
+			}
+			if !enum.done() {
+				panic("not done")
+			}
+		}
+	}
+}