63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package debug
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import (
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"strings"
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"testing"
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)
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type T int
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func (t *T) ptrmethod() []byte {
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return Stack()
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}
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func (t T) method() []byte {
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return t.ptrmethod()
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}
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/*
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The traceback should look something like this, modulo line numbers and hex constants.
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Don't worry much about the base levels, but check the ones in our own package.
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/Users/r/go/src/pkg/runtime/debug/stack_test.go:15 (0x13878)
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(*T).ptrmethod: return Stack()
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/Users/r/go/src/pkg/runtime/debug/stack_test.go:18 (0x138dd)
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T.method: return t.ptrmethod()
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/Users/r/go/src/pkg/runtime/debug/stack_test.go:23 (0x13920)
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TestStack: b := T(0).method()
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/Users/r/go/src/pkg/testing/testing.go:132 (0x14a7a)
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tRunner: test.F(t)
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/Users/r/go/src/pkg/runtime/proc.c:145 (0xc970)
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???: runtime·unlock(&runtime·sched);
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*/
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func TestStack(t *testing.T) {
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b := T(0).method()
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lines := strings.Split(string(b), "\n")
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if len(lines) <= 6 {
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t.Fatal("too few lines")
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}
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n := 0
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frame := func(line, code string) {
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check(t, lines[n], line)
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n++
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// The source might not be available while running the test.
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if strings.HasPrefix(lines[n], "\t") {
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check(t, lines[n], code)
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n++
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}
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}
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frame("src/pkg/runtime/debug/stack_test.go", "\t(*T).ptrmethod: return Stack()")
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frame("src/pkg/runtime/debug/stack_test.go", "\tT.method: return t.ptrmethod()")
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frame("src/pkg/runtime/debug/stack_test.go", "\tTestStack: b := T(0).method()")
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frame("src/pkg/testing/testing.go", "")
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}
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func check(t *testing.T, line, has string) {
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if strings.Index(line, has) < 0 {
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t.Errorf("expected %q in %q", has, line)
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}
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}
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