gcc/testsuite/go.test/test/bigalg.go

   1 // $G $D/$F.go && $L $F.$A && ./$A.out
   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 package main
   8
   9 type T struct {
  10         a float64
  11         b int64
  12         c string
  13         d byte
  14 }
  15
  16 var a = []int{ 1, 2, 3 }
  17 var NIL []int
  18
  19 func arraycmptest() {
  20         if NIL != nil {
  21                 println("fail1:", NIL, "!= nil")
  22         }
  23         if nil != NIL {
  24                 println("fail2: nil !=", NIL)
  25         }
  26         if a == nil || nil == a {
  27                 println("fail3:", a, "== nil")
  28         }
  29 }
  30
  31 func SameArray(a, b []int) bool {
  32         if len(a) != len(b) || cap(a) != cap(b) {
  33                 return false
  34         }
  35         if len(a) > 0 && &a[0] != &b[0] {
  36                 return false
  37         }
  38         return true
  39 }
  40
  41 var t = T{1.5, 123, "hello", 255}
  42 var mt = make(map[int]T)
  43 var ma = make(map[int][]int)
  44
  45 func maptest() {
  46         mt[0] = t
  47         t1 := mt[0]
  48         if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
  49                 println("fail: map val struct", t1.a, t1.b, t1.c, t1.d)
  50         }
  51
  52         ma[1] = a
  53         a1 := ma[1]
  54         if !SameArray(a, a1) {
  55                 println("fail: map val array", a, a1)
  56         }
  57 }
  58
  59 var ct = make(chan T)
  60 var ca = make(chan []int)
  61
  62 func send() {
  63         ct <- t
  64         ca <- a
  65 }
  66
  67 func chantest() {
  68         go send()
  69
  70         t1 := <-ct
  71         if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
  72                 println("fail: map val struct", t1.a, t1.b, t1.c, t1.d)
  73         }
  74
  75         a1 := <-ca
  76         if !SameArray(a, a1) {
  77                 println("fail: map val array", a, a1)
  78         }
  79 }
  80
  81 type E struct { }
  82 var e E
  83
  84 func interfacetest() {
  85         var i interface{}
  86
  87         i = a
  88         a1 := i.([]int)
  89         if !SameArray(a, a1) {
  90                 println("interface <-> []int", a, a1)
  91         }
  92         pa := new([]int)
  93         *pa = a
  94         i = pa
  95         a1 = *i.(*[]int)
  96         if !SameArray(a, a1) {
  97                 println("interface <-> *[]int", a, a1)
  98         }
  99
 100         i = t
 101         t1 := i.(T)
 102         if t1.a != t.a || t1.b != t.b || t1.c != t.c || t1.d != t.d {
 103                 println("interface <-> struct", t1.a, t1.b, t1.c, t1.d)
 104         }
 105
 106         i = e
 107         e1 := i.(E)
 108         // nothing to check; just verify it doesn't crash
 109         _ = e1
 110 }
 111
 112 func main() {
 113         arraycmptest()
 114         maptest()
 115         chantest()
 116         interfacetest()
 117 }