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test copy([]byte, string)

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R=r, r2
CC=golang-dev
https://golang.org/cl/2740041
This commit is contained in:
Russ Cox 2010-10-26 08:36:23 -07:00
parent 82c6f5e3d1
commit 0f28983afa
1 changed files with 57 additions and 4 deletions
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61
test/copy.go
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@ -23,6 +23,15 @@ var input32 = make([]uint32, N)
var output32 = make([]uint32, N) var output32 = make([]uint32, N)
var input64 = make([]uint64, N) var input64 = make([]uint64, N)
var output64 = make([]uint64, N) var output64 = make([]uint64, N)
var inputS string
var outputS = make([]uint8, N)
type my8 []uint8
type my16 []uint16
type my32 []uint32
type my32b []uint32
type my64 []uint64
type myS string
func u8(i int) uint8 { func u8(i int) uint8 {
i = 'a' + i%26 i = 'a' + i%26
@ -64,6 +73,7 @@ func reset() {
for i := range input8 { for i := range input8 {
input8[i] = u8(in) input8[i] = u8(in)
output8[i] = u8(out) output8[i] = u8(out)
outputS[i] = u8(out)
input16[i] = u16(in) input16[i] = u16(in)
output16[i] = u16(out) output16[i] = u16(out)
input32[i] = u32(in) input32[i] = u32(in)
@ -73,6 +83,7 @@ func reset() {
in++ in++
out++ out++
} }
inputS = string(input8)
} }
func clamp(n int) int { func clamp(n int) int {
@ -95,13 +106,15 @@ func ncopied(length, in, out int) int {
func doAllSlices(length, in, out int) { func doAllSlices(length, in, out int) {
reset() reset()
n := copy(output8[out:clamp(out+length)], input8[in:clamp(in+length)]) n := copy(my8(output8[out:clamp(out+length)]), input8[in:clamp(in+length)])
verify8(length, in, out, n) verify8(length, in, out, n)
n = copy(output16[out:clamp(out+length)], input16[in:clamp(in+length)]) n = copy(my8(outputS[out:clamp(out+length)]), myS(inputS[in:clamp(in+length)]))
verifyS(length, in, out, n)
n = copy(my16(output16[out:clamp(out+length)]), input16[in:clamp(in+length)])
verify16(length, in, out, n) verify16(length, in, out, n)
n = copy(output32[out:clamp(out+length)], input32[in:clamp(in+length)]) n = copy(my32(output32[out:clamp(out+length)]), my32b(input32[in:clamp(in+length)]))
verify32(length, in, out, n) verify32(length, in, out, n)
n = copy(output64[out:clamp(out+length)], input64[in:clamp(in+length)]) n = copy(my64(output64[out:clamp(out+length)]), input64[in:clamp(in+length)])
verify64(length, in, out, n) verify64(length, in, out, n)
} }
@ -145,6 +158,46 @@ func verify8(length, in, out, m int) {
} }
} }
func badS(state string, i, length, in, out int) {
fmt.Printf("%s bad(%d %d %d): %c not %c:\n\t%s\n\t%s\n",
state,
length, in, out,
outputS[i],
uint8(i+13),
inputS, outputS)
os.Exit(1)
}
func verifyS(length, in, out, m int) {
n := ncopied(length, in, out)
if m != n {
fmt.Printf("count bad(%d %d %d): %d not %d\n", length, in, out, m, n)
return
}
// before
var i int
for i = 0; i < out; i++ {
if outputS[i] != u8(i+13) {
badS("beforeS", i, length, in, out)
return
}
}
// copied part
for ; i < out+n; i++ {
if outputS[i] != u8(i+in-out) {
badS("copiedS", i, length, in, out)
return
}
}
// after
for ; i < len(outputS); i++ {
if outputS[i] != u8(i+13) {
badS("afterS", i, length, in, out)
return
}
}
}
func bad16(state string, i, length, in, out int) { func bad16(state string, i, length, in, out int) {
fmt.Printf("%s bad(%d %d %d): %x not %x:\n\t%v\n\t%v\n", fmt.Printf("%s bad(%d %d %d): %x not %x:\n\t%v\n\t%v\n",
state, state,