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// Copyright 2017 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 pprof
import (
"context"
"fmt"
"reflect"
"testing"
)
func TestSetGoroutineLabels(t *testing.T) {
sync := make(chan struct{})
wantLabels := map[string]string{}
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("Expected parent goroutine's profile labels to be empty before test, got %v", gotLabels)
}
go func() {
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("Expected child goroutine's profile labels to be empty before test, got %v", gotLabels)
}
sync <- struct{}{}
}()
<-sync
wantLabels = map[string]string{"key": "value"}
ctx := WithLabels(context.Background(), Labels("key", "value"))
SetGoroutineLabels(ctx)
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("parent goroutine's profile labels: got %v, want %v", gotLabels, wantLabels)
}
go func() {
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("child goroutine's profile labels: got %v, want %v", gotLabels, wantLabels)
}
sync <- struct{}{}
}()
<-sync
wantLabels = map[string]string{}
ctx = context.Background()
SetGoroutineLabels(ctx)
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("Expected parent goroutine's profile labels to be empty, got %v", gotLabels)
}
go func() {
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("Expected child goroutine's profile labels to be empty, got %v", gotLabels)
}
sync <- struct{}{}
}()
<-sync
}
func TestDo(t *testing.T) {
wantLabels := map[string]string{}
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("Expected parent goroutine's profile labels to be empty before Do, got %v", gotLabels)
}
Do(context.Background(), Labels("key1", "value1", "key2", "value2"), func(ctx context.Context) {
wantLabels := map[string]string{"key1": "value1", "key2": "value2"}
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("parent goroutine's profile labels: got %v, want %v", gotLabels, wantLabels)
}
sync := make(chan struct{})
go func() {
wantLabels := map[string]string{"key1": "value1", "key2": "value2"}
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
t.Errorf("child goroutine's profile labels: got %v, want %v", gotLabels, wantLabels)
}
sync <- struct{}{}
}()
<-sync
})
wantLabels = map[string]string{}
if gotLabels := getProfLabel(); !reflect.DeepEqual(gotLabels, wantLabels) {
fmt.Printf("%#v", gotLabels)
fmt.Printf("%#v", wantLabels)
t.Errorf("Expected parent goroutine's profile labels to be empty after Do, got %v", gotLabels)
}
}
func getProfLabel() map[string]string {
l := (*labelMap)(runtime_getProfLabel())
if l == nil {
return map[string]string{}
}
return *l
}
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