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Source file src/runtime/pprof/internal/profile/profile_test.go

Documentation: runtime/pprof/internal/profile

  // Copyright 2015 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 profile
  
  import (
  	"bytes"
  	"testing"
  )
  
  func TestEmptyProfile(t *testing.T) {
  	var buf bytes.Buffer
  	p, err := Parse(&buf)
  	if err != nil {
  		t.Error("Want no error, got", err)
  	}
  	if p == nil {
  		t.Fatal("Want a valid profile, got <nil>")
  	}
  	if !p.Empty() {
  		t.Errorf("Profile should be empty, got %#v", p)
  	}
  }
  
  func TestParseContention(t *testing.T) {
  	tests := []struct {
  		name    string
  		in      string
  		wantErr bool
  	}{
  		{
  			name: "valid",
  			in: `--- mutex:
  cycles/second=3491920901
  sampling period=1
  43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31
  34035731690 15760 @ 0x45e851 0x45f764 0x4a2b17 0x44ea31
  `,
  		},
  		{
  			name: "valid with comment",
  			in: `--- mutex:
  cycles/second=3491920901
  sampling period=1
  43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31
  #	0x45e850	sync.(*Mutex).Unlock+0x80	/go/src/sync/mutex.go:126
  #	0x45f763	sync.(*RWMutex).Unlock+0x83	/go/src/sync/rwmutex.go:125
  #	0x4a2be0	main.main.func3+0x70		/go/src/internal/pprof/profile/a_binary.go:58
  
  34035731690 15760 @ 0x45e851 0x45f764 0x4a2b17 0x44ea31
  #	0x45e850	sync.(*Mutex).Unlock+0x80	/go/src/sync/mutex.go:126
  #	0x45f763	sync.(*RWMutex).Unlock+0x83	/go/src/sync/rwmutex.go:125
  #	0x4a2b16	main.main.func2+0xd6		/go/src/internal/pprof/profile/a_binary.go:48
  `,
  		},
  		{
  			name:    "empty",
  			in:      `--- mutex:`,
  			wantErr: true,
  		},
  		{
  			name: "invalid header",
  			in: `--- channel:
  43227965305 1659640 @ 0x45e851 0x45f764 0x4a2be1 0x44ea31`,
  			wantErr: true,
  		},
  	}
  	for _, tc := range tests {
  		_, err := parseContention([]byte(tc.in))
  		if tc.wantErr && err == nil {
  			t.Errorf("parseContention(%q) succeeded unexpectedly", tc.name)
  		}
  		if !tc.wantErr && err != nil {
  			t.Errorf("parseContention(%q) failed unexpectedly: %v", tc.name, err)
  		}
  	}
  
  }
  

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