repo_description: Go HTTP framework with high-performance and strong-extensibility for building micro-services.
repo_topics: go http microservices
code: /*
   * Copyright 2022 CloudWeGo Authors
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *  http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package stats
  
  import (
  	"testing"
  	"time"
  
  	"github.com/cloudwego/hertz/pkg/common/test/assert"
  	"github.com/cloudwego/hertz/pkg/common/tracer/stats"
  	"github.com/cloudwego/hertz/pkg/common/tracer/traceinfo"
  )
  
  func TestUtil(t *testing.T) {
  	assert.Assert(t, CalcEventCostUs(nil, nil) == 0)
  
  	ti := traceinfo.NewTraceInfo()
  
  	// nil context
  	Record(ti, stats.HTTPStart, nil)
  	Record(ti, stats.HTTPFinish, nil)
  
  	st := ti.Stats()
  	assert.Assert(t, st != nil)
  
  	s, e := st.GetEvent(stats.HTTPStart), st.GetEvent(stats.HTTPFinish)
  	assert.Assert(t, s == nil)
  	assert.Assert(t, e == nil)
  
  	// stats disabled
  	Record(ti, stats.HTTPStart, nil)
  	time.Sleep(time.Millisecond)
  	Record(ti, stats.HTTPFinish, nil)
  
  	st = ti.Stats()
  	assert.Assert(t, st != nil)
  
  	s, e = st.GetEvent(stats.HTTPStart), st.GetEvent(stats.HTTPFinish)
  	assert.Assert(t, s == nil)
  	assert.Assert(t, e == nil)
  
  	// stats enabled
  	st = ti.Stats()
  	st.(interface{ SetLevel(stats.Level) }).SetLevel(stats.LevelBase)
  
  	Record(ti, stats.HTTPStart, nil)
  	time.Sleep(time.Millisecond)
  	Record(ti, stats.HTTPFinish, nil)
  
  	s, e = st.GetEvent(stats.HTTPStart), st.GetEvent(stats.HTTPFinish)
  	assert.Assert(t, s != nil, s)
  	assert.Assert(t, e != nil, e)
  	assert.Assert(t, CalcEventCostUs(s, e) > 0)
  }
  