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-rw-r--r--test/alias1.go54
1 files changed, 54 insertions, 0 deletions
diff --git a/test/alias1.go b/test/alias1.go
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+++ b/test/alias1.go
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+// run
+
+// Copyright 2011 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.
+
+// Test that dynamic interface checks treat byte=uint8
+// and rune=int or rune=int32.
+
+package main
+
+func main() {
+ var x interface{}
+
+ x = byte(1)
+ switch x.(type) {
+ case uint8:
+ // ok
+ default:
+ panic("byte != uint8")
+ }
+
+ x = uint8(2)
+ switch x.(type) {
+ case byte:
+ // ok
+ default:
+ panic("uint8 != byte")
+ }
+
+ rune32 := false
+ x = rune(3)
+ switch x.(type) {
+ case int:
+ // ok
+ case int32:
+ // must be new code
+ rune32 = true
+ default:
+ panic("rune != int and rune != int32")
+ }
+
+ if rune32 {
+ x = int32(4)
+ } else {
+ x = int(5)
+ }
+ switch x.(type) {
+ case rune:
+ // ok
+ default:
+ panic("int (or int32) != rune")
+ }
+}