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Source file src/runtime/debug/stack_test.go

Documentation: runtime/debug

  // Copyright 2011 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.
  package debug_test
  import (
  	. "runtime/debug"
  type T int
  func (t *T) ptrmethod() []byte {
  	return Stack()
  func (t T) method() []byte {
  	return t.ptrmethod()
  	The traceback should look something like this, modulo line numbers and hex constants.
  	Don't worry much about the base levels, but check the ones in our own package.
  		goroutine 10 [running]:
  		runtime/debug.Stack(0x0, 0x0, 0x0)
  			/Users/r/go/src/runtime/debug/stack.go:28 +0x80
  		runtime/debug.(*T).ptrmethod(0xc82005ee70, 0x0, 0x0, 0x0)
  			/Users/r/go/src/runtime/debug/stack_test.go:15 +0x29
  		runtime/debug.T.method(0x0, 0x0, 0x0, 0x0)
  			/Users/r/go/src/runtime/debug/stack_test.go:18 +0x32
  			/Users/r/go/src/runtime/debug/stack_test.go:37 +0x38
  		testing.tRunner(0xc8201ce000, 0x664b58)
  			/Users/r/go/src/testing/testing.go:456 +0x98
  		created by testing.RunTests
  			/Users/r/go/src/testing/testing.go:561 +0x86d
  func TestStack(t *testing.T) {
  	b := T(0).method()
  	lines := strings.Split(string(b), "\n")
  	if len(lines) < 6 {
  		t.Fatal("too few lines")
  	n := 0
  	frame := func(line, code string) {
  		check(t, lines[n], code)
  		check(t, lines[n], line)
  	frame("src/runtime/debug/stack.go", "runtime/debug.Stack")
  	frame("src/runtime/debug/stack_test.go", "runtime/debug_test.(*T).ptrmethod")
  	frame("src/runtime/debug/stack_test.go", "runtime/debug_test.T.method")
  	frame("src/runtime/debug/stack_test.go", "runtime/debug_test.TestStack")
  	frame("src/testing/testing.go", "")
  func check(t *testing.T, line, has string) {
  	if !strings.Contains(line, has) {
  		t.Errorf("expected %q in %q", has, line)

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