test/ken/slicearray.go

   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 basic operations of slices and arrays.
   8
   9 package main
  10
  11 var bx [10]byte
  12 var by []byte
  13 var fx [10]float64
  14 var fy []float64
  15 var lb, hb int
  16 var t int
  17
  18 func main() {
  19         lb = 0
  20         hb = 10
  21         by = bx[0:]
  22         tstb()
  23
  24         lb = 0
  25         hb = 10
  26         fy = fx[0:]
  27         tstf()
  28
  29         // width 1 (byte)
  30         lb = 0
  31         hb = 10
  32         by = bx[lb:hb]
  33         tstb()
  34         by = bx[lb:10]
  35         tstb()
  36         by = bx[lb:]
  37         tstb()
  38         by = bx[:hb]
  39         tstb()
  40         by = bx[0:hb]
  41         tstb()
  42         by = bx[0:10]
  43         tstb()
  44         by = bx[0:]
  45         tstb()
  46         by = bx[:10]
  47         tstb()
  48         by = bx[:]
  49         tstb()
  50
  51         lb = 2
  52         hb = 10
  53         by = bx[lb:hb]
  54         tstb()
  55         by = bx[lb:10]
  56         tstb()
  57         by = bx[lb:]
  58         tstb()
  59         by = bx[2:hb]
  60         tstb()
  61         by = bx[2:10]
  62         tstb()
  63         by = bx[2:]
  64         tstb()
  65
  66         lb = 0
  67         hb = 8
  68         by = bx[lb:hb]
  69         tstb()
  70         by = bx[lb:8]
  71         tstb()
  72         by = bx[0:hb]
  73         tstb()
  74         by = bx[0:8]
  75         tstb()
  76         by = bx[:8]
  77         tstb()
  78         by = bx[:hb]
  79         tstb()
  80
  81         lb = 2
  82         hb = 8
  83         by = bx[lb:hb]
  84         tstb()
  85         by = bx[lb:8]
  86         tstb()
  87         by = bx[2:hb]
  88         tstb()
  89         by = bx[2:8]
  90         tstb()
  91
  92         // width 8 (float64)
  93         lb = 0
  94         hb = 10
  95         fy = fx[lb:hb]
  96         tstf()
  97         fy = fx[lb:10]
  98         tstf()
  99         fy = fx[lb:]
 100         tstf()
 101         fy = fx[:hb]
 102         tstf()
 103         fy = fx[0:hb]
 104         tstf()
 105         fy = fx[0:10]
 106         tstf()
 107         fy = fx[0:]
 108         tstf()
 109         fy = fx[:10]
 110         tstf()
 111         fy = fx[:]
 112         tstf()
 113
 114         lb = 2
 115         hb = 10
 116         fy = fx[lb:hb]
 117         tstf()
 118         fy = fx[lb:10]
 119         tstf()
 120         fy = fx[lb:]
 121         tstf()
 122         fy = fx[2:hb]
 123         tstf()
 124         fy = fx[2:10]
 125         tstf()
 126         fy = fx[2:]
 127         tstf()
 128
 129         lb = 0
 130         hb = 8
 131         fy = fx[lb:hb]
 132         tstf()
 133         fy = fx[lb:8]
 134         tstf()
 135         fy = fx[:hb]
 136         tstf()
 137         fy = fx[0:hb]
 138         tstf()
 139         fy = fx[0:8]
 140         tstf()
 141         fy = fx[:8]
 142         tstf()
 143
 144         lb = 2
 145         hb = 8
 146         fy = fx[lb:hb]
 147         tstf()
 148         fy = fx[lb:8]
 149         tstf()
 150         fy = fx[2:hb]
 151         tstf()
 152         fy = fx[2:8]
 153         tstf()
 154 }
 155
 156 func tstb() {
 157         t++
 158         if len(by) != hb-lb {
 159                 println("t=", t, "lb=", lb, "hb=", hb,
 160                         "len=", len(by), "hb-lb=", hb-lb)
 161                 panic("fail")
 162         }
 163         if cap(by) != len(bx)-lb {
 164                 println("t=", t, "lb=", lb, "hb=", hb,
 165                         "cap=", cap(by), "len(bx)-lb=", len(bx)-lb)
 166                 panic("fail")
 167         }
 168         for i := lb; i < hb; i++ {
 169                 if bx[i] != by[i-lb] {
 170                         println("t=", t, "lb=", lb, "hb=", hb,
 171                                 "bx[", i, "]=", bx[i],
 172                                 "by[", i-lb, "]=", by[i-lb])
 173                         panic("fail")
 174                 }
 175         }
 176         by = nil
 177 }
 178
 179 func tstf() {
 180         t++
 181         if len(fy) != hb-lb {
 182                 println("t=", t, "lb=", lb, "hb=", hb,
 183                         "len=", len(fy), "hb-lb=", hb-lb)
 184                 panic("fail")
 185         }
 186         if cap(fy) != len(fx)-lb {
 187                 println("t=", t, "lb=", lb, "hb=", hb,
 188                         "cap=", cap(fy), "len(fx)-lb=", len(fx)-lb)
 189                 panic("fail")
 190         }
 191         for i := lb; i < hb; i++ {
 192                 if fx[i] != fy[i-lb] {
 193                         println("t=", t, "lb=", lb, "hb=", hb,
 194                                 "fx[", i, "]=", fx[i],
 195                                 "fy[", i-lb, "]=", fy[i-lb])
 196                         panic("fail")
 197                 }
 198         }
 199         fy = nil
 200 }
 201
 202 func init() {
 203         for i := 0; i < len(bx); i++ {
 204                 bx[i] = byte(i + 20)
 205         }
 206         by = nil
 207
 208         for i := 0; i < len(fx); i++ {
 209                 fx[i] = float64(i + 20)
 210         }
 211         fy = nil
 212 }