1// run
2
3// Copyright 2009 The Go Authors. All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Test types of constant expressions, using reflect.
8
9package main
10
11import "reflect"
12
13func typeof(x interface{}) string { return reflect.TypeOf(x).String() }
14
15func f() int { return 0 }
16
17func g() int { return 0 }
18
19type T func() int
20
21var m = map[string]T{"f": f}
22
23type A int
24type B int
25
26var a A = 1
27var b B = 2
28var x int
29
30func main() {
31	want := typeof(g)
32	if t := typeof(f); t != want {
33		println("type of f is", t, "want", want)
34		panic("fail")
35	}
36
37	want = typeof(a)
38	if t := typeof(+a); t != want {
39		println("type of +a is", t, "want", want)
40		panic("fail")
41	}
42	if t := typeof(a + 0); t != want {
43		println("type of a+0 is", t, "want", want)
44		panic("fail")
45	}
46}
47