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https://github.com/golang/go
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519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
84 lines
1.5 KiB
Go
84 lines
1.5 KiB
Go
// Copyright 2016 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 runtime_test
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import (
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"runtime"
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"strings"
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"testing"
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)
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func f1(pan bool) []uintptr {
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return f2(pan) // line 14
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}
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func f2(pan bool) []uintptr {
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return f3(pan) // line 18
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}
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func f3(pan bool) []uintptr {
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if pan {
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panic("f3") // line 23
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}
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ret := make([]uintptr, 20)
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return ret[:runtime.Callers(0, ret)] // line 26
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}
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func testCallers(t *testing.T, pcs []uintptr, pan bool) {
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m := make(map[string]int, len(pcs))
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frames := runtime.CallersFrames(pcs)
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for {
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frame, more := frames.Next()
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if frame.Function != "" {
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m[frame.Function] = frame.Line
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}
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if !more {
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break
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}
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}
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var seen []string
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for k := range m {
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seen = append(seen, k)
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}
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t.Logf("functions seen: %s", strings.Join(seen, " "))
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var f3Line int
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if pan {
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f3Line = 23
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} else {
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f3Line = 26
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}
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want := []struct {
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name string
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line int
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}{
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{"f1", 14},
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{"f2", 18},
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{"f3", f3Line},
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}
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for _, w := range want {
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if got := m["runtime_test."+w.name]; got != w.line {
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t.Errorf("%s is line %d, want %d", w.name, got, w.line)
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}
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}
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}
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func TestCallers(t *testing.T) {
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testCallers(t, f1(false), false)
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}
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func TestCallersPanic(t *testing.T) {
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defer func() {
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if r := recover(); r == nil {
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t.Fatal("did not panic")
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}
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pcs := make([]uintptr, 20)
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pcs = pcs[:runtime.Callers(0, pcs)]
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testCallers(t, pcs, true)
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}()
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f1(true)
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}
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