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-rw-r--r--test/ken/sliceslice.go205
1 files changed, 205 insertions, 0 deletions
diff --git a/test/ken/sliceslice.go b/test/ken/sliceslice.go
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+++ b/test/ken/sliceslice.go
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+// run
+
+// Copyright 2009 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 slicing and re-slicing.
+
+package main
+
+var bx []byte
+var by []byte
+var fx []float64
+var fy []float64
+var lb, hb int
+var t int
+
+func main() {
+
+ // width 1 (byte)
+ lb = 0
+ hb = 10
+ by = bx[lb:hb]
+ tstb()
+ by = bx[lb:10]
+ tstb()
+ by = bx[lb:]
+ tstb()
+ by = bx[:hb]
+ tstb()
+ by = bx[0:hb]
+ tstb()
+ by = bx[0:10]
+ tstb()
+ by = bx[0:]
+ tstb()
+ by = bx[:10]
+ tstb()
+ by = bx[:]
+ tstb()
+
+ lb = 2
+ hb = 10
+ by = bx[lb:hb]
+ tstb()
+ by = bx[lb:10]
+ tstb()
+ by = bx[lb:]
+ tstb()
+ by = bx[2:hb]
+ tstb()
+ by = bx[2:10]
+ tstb()
+ by = bx[2:]
+ tstb()
+
+ lb = 0
+ hb = 8
+ by = bx[lb:hb]
+ tstb()
+ by = bx[lb:8]
+ tstb()
+ by = bx[0:hb]
+ tstb()
+ by = bx[0:8]
+ tstb()
+ by = bx[:8]
+ tstb()
+ by = bx[:hb]
+ tstb()
+
+ lb = 2
+ hb = 8
+ by = bx[lb:hb]
+ tstb()
+ by = bx[lb:8]
+ tstb()
+ by = bx[2:hb]
+ tstb()
+ by = bx[2:8]
+ tstb()
+
+ // width 4 (float64)
+ lb = 0
+ hb = 10
+ fy = fx[lb:hb]
+ tstf()
+ fy = fx[lb:10]
+ tstf()
+ fy = fx[lb:]
+ tstf()
+ fy = fx[:hb]
+ tstf()
+ fy = fx[0:hb]
+ tstf()
+ fy = fx[0:10]
+ tstf()
+ fy = fx[0:]
+ tstf()
+ fy = fx[:10]
+ tstf()
+ fy = fx[:]
+ tstf()
+
+ lb = 2
+ hb = 10
+ fy = fx[lb:hb]
+ tstf()
+ fy = fx[lb:10]
+ tstf()
+ fy = fx[lb:]
+ tstf()
+ fy = fx[2:hb]
+ tstf()
+ fy = fx[2:10]
+ tstf()
+ fy = fx[2:]
+ tstf()
+
+ lb = 0
+ hb = 8
+ fy = fx[lb:hb]
+ tstf()
+ fy = fx[lb:8]
+ tstf()
+ fy = fx[:hb]
+ tstf()
+ fy = fx[0:hb]
+ tstf()
+ fy = fx[0:8]
+ tstf()
+ fy = fx[:8]
+ tstf()
+
+ lb = 2
+ hb = 8
+ fy = fx[lb:hb]
+ tstf()
+ fy = fx[lb:8]
+ tstf()
+ fy = fx[2:hb]
+ tstf()
+ fy = fx[2:8]
+ tstf()
+}
+
+func tstb() {
+ t++
+ if len(by) != hb-lb {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "len=", len(by), "hb-lb=", hb-lb)
+ panic("fail")
+ }
+ if cap(by) != len(bx)-lb {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "cap=", cap(by), "len(bx)-lb=", len(bx)-lb)
+ panic("fail")
+ }
+ for i := lb; i < hb; i++ {
+ if bx[i] != by[i-lb] {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "bx[", i, "]=", bx[i],
+ "by[", i-lb, "]=", by[i-lb])
+ panic("fail")
+ }
+ }
+ by = nil
+}
+
+func tstf() {
+ t++
+ if len(fy) != hb-lb {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "len=", len(fy), "hb-lb=", hb-lb)
+ panic("fail")
+ }
+ if cap(fy) != len(fx)-lb {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "cap=", cap(fy), "len(fx)-lb=", len(fx)-lb)
+ panic("fail")
+ }
+ for i := lb; i < hb; i++ {
+ if fx[i] != fy[i-lb] {
+ println("t=", t, "lb=", lb, "hb=", hb,
+ "fx[", i, "]=", fx[i],
+ "fy[", i-lb, "]=", fy[i-lb])
+ panic("fail")
+ }
+ }
+ fy = nil
+}
+
+func init() {
+ bx = make([]byte, 10)
+ for i := 0; i < len(bx); i++ {
+ bx[i] = byte(i + 20)
+ }
+ by = nil
+
+ fx = make([]float64, 10)
+ for i := 0; i < len(fx); i++ {
+ fx[i] = float64(i + 20)
+ }
+ fy = nil
+}