bilibili-backup/library/net/trace/span_test.go
2019-04-22 02:59:20 +00:00

109 lines
3.1 KiB
Go

package trace
import (
"fmt"
"strconv"
"testing"
"time"
"github.com/pkg/errors"
"github.com/stretchr/testify/assert"
)
func TestSpan(t *testing.T) {
report := &mockReport{}
t1 := newTracer("service1", report, &Config{DisableSample: true})
t.Run("test span string", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
assert.NotEmpty(t, fmt.Sprint(sp1))
})
t.Run("test fork", func(t *testing.T) {
sp1 := t1.New("testfork").(*span)
sp2 := sp1.Fork("xxx", "opt_2").(*span)
assert.Equal(t, sp1.context.traceID, sp2.context.traceID)
assert.Equal(t, sp1.context.spanID, sp2.context.parentID)
t.Run("test max fork", func(t *testing.T) {
sp3 := sp2.Fork("xx", "xxx")
for i := 0; i < 100; i++ {
sp3 = sp3.Fork("", "xxx")
}
assert.Equal(t, noopspan{}, sp3)
})
t.Run("test max childs", func(t *testing.T) {
sp3 := sp2.Fork("xx", "xxx")
for i := 0; i < 4096; i++ {
sp3.Fork("", "xxx")
}
assert.Equal(t, noopspan{}, sp3.Fork("xx", "xx"))
})
})
t.Run("test finish", func(t *testing.T) {
t.Run("test finish ok", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
time.Sleep(time.Millisecond)
sp1.Finish(nil)
assert.True(t, sp1.startTime.Unix() > 0)
assert.True(t, sp1.duration > time.Microsecond)
})
t.Run("test finish error", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
time.Sleep(time.Millisecond)
err := fmt.Errorf("🍻")
sp1.Finish(&err)
assert.True(t, sp1.startTime.Unix() > 0)
assert.True(t, sp1.duration > time.Microsecond)
errorTag := false
for _, tag := range sp1.tags {
if tag.Key == TagError && tag.Value != nil {
errorTag = true
}
}
assert.True(t, errorTag)
messageLog := false
for _, log := range sp1.logs {
assert.True(t, log.Timestamp != 0)
for _, field := range log.Fields {
if field.Key == LogMessage && len(field.Value) != 0 {
messageLog = true
}
}
}
assert.True(t, messageLog)
})
t.Run("test finish error stack", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
time.Sleep(time.Millisecond)
err := fmt.Errorf("🍻")
err = errors.WithStack(err)
sp1.Finish(&err)
ok := false
for _, log := range sp1.logs {
for _, field := range log.Fields {
if field.Key == LogStack && len(field.Value) != 0 {
ok = true
}
}
}
assert.True(t, ok, "LogStack set")
})
t.Run("test too many tags", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
for i := 0; i < 1024; i++ {
sp1.SetTag(Tag{Key: strconv.Itoa(i), Value: "hello"})
}
assert.Len(t, sp1.tags, _maxTags+1)
assert.Equal(t, sp1.tags[_maxTags].Key, "trace.error")
assert.Equal(t, sp1.tags[_maxTags].Value, "too many tags")
})
t.Run("test too many logs", func(t *testing.T) {
sp1 := t1.New("testfinish").(*span)
for i := 0; i < 1024; i++ {
sp1.SetLog(LogField{Key: strconv.Itoa(i), Value: "hello"})
}
assert.Len(t, sp1.logs, _maxLogs+1)
assert.Equal(t, sp1.logs[_maxLogs].Fields[0].Key, "trace.error")
assert.Equal(t, sp1.logs[_maxLogs].Fields[0].Value, []byte("too many logs"))
})
})
}