1 // $G $F.go && $L $F.$A && ./$A.out
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.
7 // Semi-exhaustive test for copy()
18 var input8 = make([]uint8, N)
19 var output8 = make([]uint8, N)
20 var input16 = make([]uint16, N)
21 var output16 = make([]uint16, N)
22 var input32 = make([]uint32, N)
23 var output32 = make([]uint32, N)
24 var input64 = make([]uint64, N)
25 var output64 = make([]uint64, N)
27 func u8(i int) uint8 {
32 func u16(ii int) uint16 {
39 func u32(ii int) uint32 {
47 func u64(ii int) uint64 {
57 // swap in and out to exercise copy-up and copy-down
58 input8, output8 = output8, input8
59 input16, output16 = output16, input16
60 input32, output32 = output32, input32
61 input64, output64 = output64, input64
64 for i := range input8 {
68 output16[i] = u16(out)
70 output32[i] = u32(out)
72 output64[i] = u64(out)
78 func clamp(n int) int {
85 func ncopied(length, in, out int) int {
96 func doAllSlices(length, in, out int) {
98 n := copy(output8[out:clamp(out+length)], input8[in:clamp(in+length)])
99 verify8(length, in, out, n)
100 n = copy(output16[out:clamp(out+length)], input16[in:clamp(in+length)])
101 verify16(length, in, out, n)
102 n = copy(output32[out:clamp(out+length)], input32[in:clamp(in+length)])
103 verify32(length, in, out, n)
104 n = copy(output64[out:clamp(out+length)], input64[in:clamp(in+length)])
105 verify64(length, in, out, n)
108 func bad8(state string, i, length, in, out int) {
109 fmt.Printf("%s bad(%d %d %d): %c not %c:\n\t%s\n\t%s\n",
118 func verify8(length, in, out, m int) {
119 n := ncopied(length, in, out)
121 fmt.Printf("count bad(%d %d %d): %d not %d\n", length, in, out, m, n)
126 for i = 0; i < out; i++ {
127 if output8[i] != u8(i+13) {
128 bad8("before8", i, length, in, out)
133 for ; i < out+n; i++ {
134 if output8[i] != u8(i+in-out) {
135 bad8("copied8", i, length, in, out)
140 for ; i < len(output8); i++ {
141 if output8[i] != u8(i+13) {
142 bad8("after8", i, length, in, out)
148 func bad16(state string, i, length, in, out int) {
149 fmt.Printf("%s bad(%d %d %d): %x not %x:\n\t%v\n\t%v\n",
158 func verify16(length, in, out, m int) {
159 n := ncopied(length, in, out)
161 fmt.Printf("count bad(%d %d %d): %d not %d\n", length, in, out, m, n)
166 for i = 0; i < out; i++ {
167 if output16[i] != u16(i+13) {
168 bad16("before16", i, length, in, out)
173 for ; i < out+n; i++ {
174 if output16[i] != u16(i+in-out) {
175 bad16("copied16", i, length, in, out)
180 for ; i < len(output16); i++ {
181 if output16[i] != u16(i+13) {
182 bad16("after16", i, length, in, out)
188 func bad32(state string, i, length, in, out int) {
189 fmt.Printf("%s bad(%d %d %d): %x not %x:\n\t%v\n\t%v\n",
198 func verify32(length, in, out, m int) {
199 n := ncopied(length, in, out)
201 fmt.Printf("count bad(%d %d %d): %d not %d\n", length, in, out, m, n)
206 for i = 0; i < out; i++ {
207 if output32[i] != u32(i+13) {
208 bad32("before32", i, length, in, out)
213 for ; i < out+n; i++ {
214 if output32[i] != u32(i+in-out) {
215 bad32("copied32", i, length, in, out)
220 for ; i < len(output32); i++ {
221 if output32[i] != u32(i+13) {
222 bad32("after32", i, length, in, out)
228 func bad64(state string, i, length, in, out int) {
229 fmt.Printf("%s bad(%d %d %d): %x not %x:\n\t%v\n\t%v\n",
238 func verify64(length, in, out, m int) {
239 n := ncopied(length, in, out)
241 fmt.Printf("count bad(%d %d %d): %d not %d\n", length, in, out, m, n)
246 for i = 0; i < out; i++ {
247 if output64[i] != u64(i+13) {
248 bad64("before64", i, length, in, out)
253 for ; i < out+n; i++ {
254 if output64[i] != u64(i+in-out) {
255 bad64("copied64", i, length, in, out)
260 for ; i < len(output64); i++ {
261 if output64[i] != u64(i+13) {
262 bad64("after64", i, length, in, out)
269 for length := 0; length < N; length++ {
270 for in := 0; in <= 32; in++ {
271 for out := 0; out <= 32; out++ {
272 doAllSlices(length, in, out)
278 // Array test. Can be much simpler. It's only checking for correct handling of [0:].
282 copy(array[0:], input8)
283 for i := 0; i < N; i++ {
286 copy(output8, array[0:])