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 the cap predeclared function applied to channels.
8
9package main
10
11func main() {
12	c := make(chan int, 10)
13	if len(c) != 0 || cap(c) != 10 {
14		println("chan len/cap ", len(c), cap(c), " want 0 10")
15		panic("fail")
16	}
17
18	for i := 0; i < 3; i++ {
19		c <- i
20	}
21	if len(c) != 3 || cap(c) != 10 {
22		println("chan len/cap ", len(c), cap(c), " want 3 10")
23		panic("fail")
24	}
25
26	c = make(chan int)
27	if len(c) != 0 || cap(c) != 0 {
28		println("chan len/cap ", len(c), cap(c), " want 0 0")
29		panic("fail")
30	}
31}
32