libgo/go/internal/pprof/profile/profile_test.go

   1 // Copyright 2015 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 profile
   6
   7 import (
   8         "bytes"
   9         "testing"
  10 )
  11
  12 func TestEmptyProfile(t *testing.T) {
  13         var buf bytes.Buffer
  14         p, err := Parse(&buf)
  15         if err != nil {
  16                 t.Error("Want no error, got", err)
  17         }
  18         if p == nil {
  19                 t.Fatal("Want a valid profile, got <nil>")
  20         }
  21         if !p.Empty() {
  22                 t.Errorf("Profile should be empty, got %#v", p)
  23         }
  24 }
  25
  26 func TestParseContention(t *testing.T) {
  27         tests := []struct {
  28                 name    string
  29                 in      string
  30                 wantErr bool
  31         }{
  32                 {
  33                         name: "valid",
  34                         in: `--- mutex:
  35 cycles/second=3491920901
  36 sampling period=1
  37 43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31
  38 34035731690 15760 @ 0x45e851 0x45f764 0x4a2b17 0x44ea31
  39 `,
  40                 },
  41                 {
  42                         name: "valid with comment",
  43                         in: `--- mutex:
  44 cycles/second=3491920901
  45 sampling period=1
  46 43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31
  47 #       0x45e850        sync.(*Mutex).Unlock+0x80       /go/src/sync/mutex.go:126
  48 #       0x45f763        sync.(*RWMutex).Unlock+0x83     /go/src/sync/rwmutex.go:125
  49 #       0x4a2be0        main.main.func3+0x70            /go/src/internal/pprof/profile/a_binary.go:58
  50
  51 34035731690 15760 @ 0x45e851 0x45f764 0x4a2b17 0x44ea31
  52 #       0x45e850        sync.(*Mutex).Unlock+0x80       /go/src/sync/mutex.go:126
  53 #       0x45f763        sync.(*RWMutex).Unlock+0x83     /go/src/sync/rwmutex.go:125
  54 #       0x4a2b16        main.main.func2+0xd6            /go/src/internal/pprof/profile/a_binary.go:48
  55 `,
  56                 },
  57                 {
  58                         name:    "empty",
  59                         in:      `--- mutex:`,
  60                         wantErr: true,
  61                 },
  62                 {
  63                         name: "invalid header",
  64                         in: `--- channel:
  65 43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31`,
  66                         wantErr: true,
  67                 },
  68         }
  69         for _, tc := range tests {
  70                 _, err := parseContention([]byte(tc.in))
  71                 if tc.wantErr && err == nil {
  72                         t.Errorf("parseContention(%q) succeeded unexpectedly", tc.name)
  73                 }
  74                 if !tc.wantErr && err != nil {
  75                         t.Errorf("parseContention(%q) failed unexpectedly: %v", tc.name, err)
  76                 }
  77         }
  78
  79 }