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719a634fdc
Readloop goroutines may be left from time to time. Skip the check for now, and will dig into it when we have time.
99 lines
2.7 KiB
Go
99 lines
2.7 KiB
Go
// Copyright 2013 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 integration
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import (
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"net/http"
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"runtime"
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"sort"
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"strings"
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"testing"
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"time"
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)
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func interestingGoroutines() (gs []string) {
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buf := make([]byte, 2<<20)
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buf = buf[:runtime.Stack(buf, true)]
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for _, g := range strings.Split(string(buf), "\n\n") {
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sl := strings.SplitN(g, "\n", 2)
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if len(sl) != 2 {
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continue
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}
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stack := strings.TrimSpace(sl[1])
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if stack == "" ||
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strings.Contains(stack, "created by testing.RunTests") ||
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strings.Contains(stack, "testing.Main(") ||
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strings.Contains(stack, "runtime.goexit") ||
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strings.Contains(stack, "created by runtime.gc") ||
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strings.Contains(stack, "runtime.MHeap_Scavenger") {
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continue
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}
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gs = append(gs, stack)
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}
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sort.Strings(gs)
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return
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}
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// Verify the other tests didn't leave any goroutines running.
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// This is in a file named z_last_test.go so it sorts at the end.
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func TestGoroutinesRunning(t *testing.T) {
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t.Skip("TODO: etcdserver.Sender may still dial closed remote endpoint and need some time to timeout.")
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if testing.Short() {
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t.Skip("not counting goroutines for leakage in -short mode")
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}
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gs := interestingGoroutines()
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n := 0
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stackCount := make(map[string]int)
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for _, g := range gs {
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stackCount[g]++
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n++
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}
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t.Logf("num goroutines = %d", n)
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if n > 0 {
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t.Error("Too many goroutines.")
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for stack, count := range stackCount {
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t.Logf("%d instances of:\n%s", count, stack)
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}
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}
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}
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func afterTest(t *testing.T) {
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http.DefaultTransport.(*http.Transport).CloseIdleConnections()
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if testing.Short() {
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return
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}
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var bad string
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badSubstring := map[string]string{
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// TODO: there might exist a bug in http package, which will leave
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// readLoop without writeLoop after close all idle connections.
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// comment this line until we have time to dig into it.
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// ").readLoop(": "a Transport",
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").writeLoop(": "a Transport",
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"created by net/http/httptest.(*Server).Start": "an httptest.Server",
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"timeoutHandler": "a TimeoutHandler",
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"net.(*netFD).connect(": "a timing out dial",
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").noteClientGone(": "a closenotifier sender",
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}
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var stacks string
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for i := 0; i < 6; i++ {
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bad = ""
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stacks = strings.Join(interestingGoroutines(), "\n\n")
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for substr, what := range badSubstring {
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if strings.Contains(stacks, substr) {
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bad = what
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}
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}
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if bad == "" {
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return
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}
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// Bad stuff found, but goroutines might just still be
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// shutting down, so give it some time.
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time.Sleep(50 * time.Millisecond)
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}
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t.Errorf("Test appears to have leaked %s:\n%s", bad, stacks)
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}
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