| // $G $F.go && $L $F.$A && ./$A.out |
| |
| // Copyright 2010 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. |
| |
| // Semi-exhaustive test for append() |
| |
| package main |
| |
| import ( |
| "fmt" |
| "reflect" |
| ) |
| |
| |
| func verify(name string, result, expected interface{}) { |
| if !reflect.DeepEqual(result, expected) { |
| panic(name) |
| } |
| } |
| |
| |
| func main() { |
| for _, t := range tests { |
| verify(t.name, t.result, t.expected) |
| } |
| verifyStruct() |
| verifyInterface() |
| } |
| |
| |
| var tests = []struct { |
| name string |
| result, expected interface{} |
| }{ |
| {"bool a", append([]bool{}), []bool{}}, |
| {"bool b", append([]bool{}, true), []bool{true}}, |
| {"bool c", append([]bool{}, true, false, true, true), []bool{true, false, true, true}}, |
| |
| {"bool d", append([]bool{true, false, true}), []bool{true, false, true}}, |
| {"bool e", append([]bool{true, false, true}, false), []bool{true, false, true, false}}, |
| {"bool f", append([]bool{true, false, true}, false, false, false), []bool{true, false, true, false, false, false}}, |
| |
| {"bool g", append([]bool{}, []bool{true}...), []bool{true}}, |
| {"bool h", append([]bool{}, []bool{true, false, true, false}...), []bool{true, false, true, false}}, |
| |
| {"bool i", append([]bool{true, false, true}, []bool{true}...), []bool{true, false, true, true}}, |
| {"bool j", append([]bool{true, false, true}, []bool{true, true, true}...), []bool{true, false, true, true, true, true}}, |
| |
| |
| {"byte a", append([]byte{}), []byte{}}, |
| {"byte b", append([]byte{}, 0), []byte{0}}, |
| {"byte c", append([]byte{}, 0, 1, 2, 3), []byte{0, 1, 2, 3}}, |
| |
| {"byte d", append([]byte{0, 1, 2}), []byte{0, 1, 2}}, |
| {"byte e", append([]byte{0, 1, 2}, 3), []byte{0, 1, 2, 3}}, |
| {"byte f", append([]byte{0, 1, 2}, 3, 4, 5), []byte{0, 1, 2, 3, 4, 5}}, |
| |
| {"byte g", append([]byte{}, []byte{0}...), []byte{0}}, |
| {"byte h", append([]byte{}, []byte{0, 1, 2, 3}...), []byte{0, 1, 2, 3}}, |
| |
| {"byte i", append([]byte{0, 1, 2}, []byte{3}...), []byte{0, 1, 2, 3}}, |
| {"byte j", append([]byte{0, 1, 2}, []byte{3, 4, 5}...), []byte{0, 1, 2, 3, 4, 5}}, |
| |
| |
| {"int16 a", append([]int16{}), []int16{}}, |
| {"int16 b", append([]int16{}, 0), []int16{0}}, |
| {"int16 c", append([]int16{}, 0, 1, 2, 3), []int16{0, 1, 2, 3}}, |
| |
| {"int16 d", append([]int16{0, 1, 2}), []int16{0, 1, 2}}, |
| {"int16 e", append([]int16{0, 1, 2}, 3), []int16{0, 1, 2, 3}}, |
| {"int16 f", append([]int16{0, 1, 2}, 3, 4, 5), []int16{0, 1, 2, 3, 4, 5}}, |
| |
| {"int16 g", append([]int16{}, []int16{0}...), []int16{0}}, |
| {"int16 h", append([]int16{}, []int16{0, 1, 2, 3}...), []int16{0, 1, 2, 3}}, |
| |
| {"int16 i", append([]int16{0, 1, 2}, []int16{3}...), []int16{0, 1, 2, 3}}, |
| {"int16 j", append([]int16{0, 1, 2}, []int16{3, 4, 5}...), []int16{0, 1, 2, 3, 4, 5}}, |
| |
| |
| {"uint32 a", append([]uint32{}), []uint32{}}, |
| {"uint32 b", append([]uint32{}, 0), []uint32{0}}, |
| {"uint32 c", append([]uint32{}, 0, 1, 2, 3), []uint32{0, 1, 2, 3}}, |
| |
| {"uint32 d", append([]uint32{0, 1, 2}), []uint32{0, 1, 2}}, |
| {"uint32 e", append([]uint32{0, 1, 2}, 3), []uint32{0, 1, 2, 3}}, |
| {"uint32 f", append([]uint32{0, 1, 2}, 3, 4, 5), []uint32{0, 1, 2, 3, 4, 5}}, |
| |
| {"uint32 g", append([]uint32{}, []uint32{0}...), []uint32{0}}, |
| {"uint32 h", append([]uint32{}, []uint32{0, 1, 2, 3}...), []uint32{0, 1, 2, 3}}, |
| |
| {"uint32 i", append([]uint32{0, 1, 2}, []uint32{3}...), []uint32{0, 1, 2, 3}}, |
| {"uint32 j", append([]uint32{0, 1, 2}, []uint32{3, 4, 5}...), []uint32{0, 1, 2, 3, 4, 5}}, |
| |
| |
| {"float64 a", append([]float64{}), []float64{}}, |
| {"float64 b", append([]float64{}, 0), []float64{0}}, |
| {"float64 c", append([]float64{}, 0, 1, 2, 3), []float64{0, 1, 2, 3}}, |
| |
| {"float64 d", append([]float64{0, 1, 2}), []float64{0, 1, 2}}, |
| {"float64 e", append([]float64{0, 1, 2}, 3), []float64{0, 1, 2, 3}}, |
| {"float64 f", append([]float64{0, 1, 2}, 3, 4, 5), []float64{0, 1, 2, 3, 4, 5}}, |
| |
| {"float64 g", append([]float64{}, []float64{0}...), []float64{0}}, |
| {"float64 h", append([]float64{}, []float64{0, 1, 2, 3}...), []float64{0, 1, 2, 3}}, |
| |
| {"float64 i", append([]float64{0, 1, 2}, []float64{3}...), []float64{0, 1, 2, 3}}, |
| {"float64 j", append([]float64{0, 1, 2}, []float64{3, 4, 5}...), []float64{0, 1, 2, 3, 4, 5}}, |
| |
| |
| {"complex128 a", append([]complex128{}), []complex128{}}, |
| {"complex128 b", append([]complex128{}, 0), []complex128{0}}, |
| {"complex128 c", append([]complex128{}, 0, 1, 2, 3), []complex128{0, 1, 2, 3}}, |
| |
| {"complex128 d", append([]complex128{0, 1, 2}), []complex128{0, 1, 2}}, |
| {"complex128 e", append([]complex128{0, 1, 2}, 3), []complex128{0, 1, 2, 3}}, |
| {"complex128 f", append([]complex128{0, 1, 2}, 3, 4, 5), []complex128{0, 1, 2, 3, 4, 5}}, |
| |
| {"complex128 g", append([]complex128{}, []complex128{0}...), []complex128{0}}, |
| {"complex128 h", append([]complex128{}, []complex128{0, 1, 2, 3}...), []complex128{0, 1, 2, 3}}, |
| |
| {"complex128 i", append([]complex128{0, 1, 2}, []complex128{3}...), []complex128{0, 1, 2, 3}}, |
| {"complex128 j", append([]complex128{0, 1, 2}, []complex128{3, 4, 5}...), []complex128{0, 1, 2, 3, 4, 5}}, |
| |
| |
| {"string a", append([]string{}), []string{}}, |
| {"string b", append([]string{}, "0"), []string{"0"}}, |
| {"string c", append([]string{}, "0", "1", "2", "3"), []string{"0", "1", "2", "3"}}, |
| |
| {"string d", append([]string{"0", "1", "2"}), []string{"0", "1", "2"}}, |
| {"string e", append([]string{"0", "1", "2"}, "3"), []string{"0", "1", "2", "3"}}, |
| {"string f", append([]string{"0", "1", "2"}, "3", "4", "5"), []string{"0", "1", "2", "3", "4", "5"}}, |
| |
| {"string g", append([]string{}, []string{"0"}...), []string{"0"}}, |
| {"string h", append([]string{}, []string{"0", "1", "2", "3"}...), []string{"0", "1", "2", "3"}}, |
| |
| {"string i", append([]string{"0", "1", "2"}, []string{"3"}...), []string{"0", "1", "2", "3"}}, |
| {"string j", append([]string{"0", "1", "2"}, []string{"3", "4", "5"}...), []string{"0", "1", "2", "3", "4", "5"}}, |
| } |
| |
| |
| func verifyStruct() { |
| type T struct { |
| a, b, c string |
| } |
| type S []T |
| e := make(S, 100) |
| for i := range e { |
| e[i] = T{"foo", fmt.Sprintf("%d", i), "bar"} |
| } |
| |
| verify("struct a", append(S{}), S{}) |
| verify("struct b", append(S{}, e[0]), e[0:1]) |
| verify("struct c", append(S{}, e[0], e[1], e[2]), e[0:3]) |
| |
| verify("struct d", append(e[0:1]), e[0:1]) |
| verify("struct e", append(e[0:1], e[1]), e[0:2]) |
| verify("struct f", append(e[0:1], e[1], e[2], e[3]), e[0:4]) |
| |
| verify("struct g", append(e[0:3]), e[0:3]) |
| verify("struct h", append(e[0:3], e[3]), e[0:4]) |
| verify("struct i", append(e[0:3], e[3], e[4], e[5], e[6]), e[0:7]) |
| |
| for i := range e { |
| verify("struct j", append(S{}, e[0:i]...), e[0:i]) |
| input := make(S, i) |
| copy(input, e[0:i]) |
| verify("struct k", append(input, e[i:]...), e) |
| verify("struct k - input modified", input, e[0:i]) |
| } |
| |
| s := make(S, 10, 20) |
| r := make(S, len(s)+len(e)) |
| for i, x := range e { |
| r[len(s)+i] = x |
| } |
| verify("struct l", append(s), s) |
| verify("struct m", append(s, e...), r) |
| } |
| |
| |
| func verifyInterface() { |
| type T interface{} |
| type S []T |
| e := make(S, 100) |
| for i := range e { |
| switch i % 4 { |
| case 0: |
| e[i] = i |
| case 1: |
| e[i] = "foo" |
| case 2: |
| e[i] = fmt.Sprintf("%d", i) |
| case 3: |
| e[i] = float64(i) |
| } |
| } |
| |
| verify("interface a", append(S{}), S{}) |
| verify("interface b", append(S{}, e[0]), e[0:1]) |
| verify("interface c", append(S{}, e[0], e[1], e[2]), e[0:3]) |
| |
| verify("interface d", append(e[0:1]), e[0:1]) |
| verify("interface e", append(e[0:1], e[1]), e[0:2]) |
| verify("interface f", append(e[0:1], e[1], e[2], e[3]), e[0:4]) |
| |
| verify("interface g", append(e[0:3]), e[0:3]) |
| verify("interface h", append(e[0:3], e[3]), e[0:4]) |
| verify("interface i", append(e[0:3], e[3], e[4], e[5], e[6]), e[0:7]) |
| |
| for i := range e { |
| verify("interface j", append(S{}, e[0:i]...), e[0:i]) |
| input := make(S, i) |
| copy(input, e[0:i]) |
| verify("interface k", append(input, e[i:]...), e) |
| verify("interface k - input modified", input, e[0:i]) |
| } |
| |
| s := make(S, 10, 20) |
| r := make(S, len(s)+len(e)) |
| for i, x := range e { |
| r[len(s)+i] = x |
| } |
| verify("interface l", append(s), s) |
| verify("interface m", append(s, e...), r) |
| } |