1 // Copyright 2011 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 package debug_test 6 7 import ( 8 . "runtime/debug" 9 "strings" 10 "testing" 11 ) 12 13 type T int 14 15 func (t *T) ptrmethod() []byte { 16 return Stack() 17 } 18 func (t T) method() []byte { 19 return t.ptrmethod() 20 } 21 22 /* 23 The traceback should look something like this, modulo line numbers and hex constants. 24 Don't worry much about the base levels, but check the ones in our own package. 25 26 goroutine 10 [running]: 27 runtime/debug.Stack(0x0, 0x0, 0x0) 28 /Users/r/go/src/runtime/debug/stack.go:28 +0x80 29 runtime/debug.(*T).ptrmethod(0xc82005ee70, 0x0, 0x0, 0x0) 30 /Users/r/go/src/runtime/debug/stack_test.go:15 +0x29 31 runtime/debug.T.method(0x0, 0x0, 0x0, 0x0) 32 /Users/r/go/src/runtime/debug/stack_test.go:18 +0x32 33 runtime/debug.TestStack(0xc8201ce000) 34 /Users/r/go/src/runtime/debug/stack_test.go:37 +0x38 35 testing.tRunner(0xc8201ce000, 0x664b58) 36 /Users/r/go/src/testing/testing.go:456 +0x98 37 created by testing.RunTests 38 /Users/r/go/src/testing/testing.go:561 +0x86d 39 */ 40 func TestStack(t *testing.T) { 41 b := T(0).method() 42 lines := strings.Split(string(b), "\n") 43 if len(lines) < 6 { 44 t.Fatal("too few lines") 45 } 46 n := 0 47 frame := func(line, code string) { 48 check(t, lines[n], code) 49 n++ 50 check(t, lines[n], line) 51 n++ 52 } 53 n++ 54 frame("src/runtime/debug/stack.go", "runtime/debug.Stack") 55 frame("src/runtime/debug/stack_test.go", "runtime/debug_test.(*T).ptrmethod") 56 frame("src/runtime/debug/stack_test.go", "runtime/debug_test.T.method") 57 frame("src/runtime/debug/stack_test.go", "runtime/debug_test.TestStack") 58 frame("src/testing/testing.go", "") 59 } 60 61 func check(t *testing.T, line, has string) { 62 if !strings.Contains(line, has) { 63 t.Errorf("expected %q in %q", has, line) 64 } 65 } 66
