1 // Copyright 2012 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Tests that method calls through an interface always 6 // call the locally defined method localT.m independent 7 // at which embedding level it is and in which order 8 // embedding is done. 9 10 package main 11 12 import "./lib" 13 import "reflect" 14 import "fmt" 15 16 type localI interface { 17 m() string 18 } 19 20 type localT struct{} 21 22 func (t *localT) m() string { 23 return "main.localT.m" 24 } 25 26 type myT1 struct { 27 localT 28 } 29 30 type myT2 struct { 31 localT 32 lib.T 33 } 34 35 type myT3 struct { 36 lib.T 37 localT 38 } 39 40 func main() { 41 var i localI 42 43 i = new(localT) 44 if i.m() != "main.localT.m" { 45 println("BUG: localT:", i.m(), "called") 46 } 47 48 i = new(myT1) 49 if i.m() != "main.localT.m" { 50 println("BUG: myT1:", i.m(), "called") 51 } 52 53 i = new(myT2) 54 if i.m() != "main.localT.m" { 55 println("BUG: myT2:", i.m(), "called") 56 } 57 58 t3 := new(myT3) 59 if t3.m() != "main.localT.m" { 60 println("BUG: t3:", t3.m(), "called") 61 } 62 63 i = new(myT3) 64 if i.m() != "main.localT.m" { 65 t := reflect.TypeOf(i) 66 n := t.NumMethod() 67 for j := 0; j < n; j++ { 68 m := t.Method(j) 69 fmt.Printf("#%d: %s.%s %s\n", j, m.PkgPath, m.Name, m.Type) 70 } 71 println("BUG: myT3:", i.m(), "called") 72 } 73 74 var t4 struct { 75 localT 76 lib.T 77 } 78 if t4.m() != "main.localT.m" { 79 println("BUG: t4:", t4.m(), "called") 80 } 81 i = &t4 82 if i.m() != "main.localT.m" { 83 println("BUG: myT4:", i.m(), "called") 84 } 85 86 var t5 struct { 87 lib.T 88 localT 89 } 90 if t5.m() != "main.localT.m" { 91 println("BUG: t5:", t5.m(), "called") 92 } 93 i = &t5 94 if i.m() != "main.localT.m" { 95 println("BUG: myT5:", i.m(), "called") 96 } 97 } 98
