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// Copyright 2022 The OpenZipkin 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 idgenerator_test
import (
"testing"
"github.com/openzipkin/zipkin-go/idgenerator"
"github.com/openzipkin/zipkin-go/model"
)
func TestRandom64(t *testing.T) {
var (
spanID model.ID
gen = idgenerator.NewRandom64()
traceID = gen.TraceID()
)
if traceID.Empty() {
t.Errorf("Expected valid TraceID, got: %+v", traceID)
}
if want, have := uint64(0), traceID.High; want != have {
t.Errorf("Expected TraceID.High to be 0, got %d", have)
}
spanID = gen.SpanID(traceID)
if want, have := model.ID(traceID.Low), spanID; want != have {
t.Errorf("Expected root span to have span ID %d, got %d", want, have)
}
spanID = gen.SpanID(model.TraceID{})
if spanID == 0 {
t.Errorf("Expected child span to have a valid span ID, got 0")
}
}
func TestRandom128(t *testing.T) {
var (
spanID model.ID
gen = idgenerator.NewRandom128()
traceID = gen.TraceID()
)
if traceID.Empty() {
t.Errorf("Expected valid TraceID, got: %+v", traceID)
}
if traceID.Low == 0 {
t.Error("Expected TraceID.Low to have value, got 0")
}
if traceID.High == 0 {
t.Error("Expected TraceID.High to have value, got 0")
}
spanID = gen.SpanID(traceID)
if want, have := model.ID(traceID.Low), spanID; want != have {
t.Errorf("Expected root span to have span ID %d, got %d", want, have)
}
spanID = gen.SpanID(model.TraceID{})
if spanID == 0 {
t.Errorf("Expected child span to have a valid span ID, got 0")
}
}
func TestRandomTimeStamped(t *testing.T) {
var (
spanID model.ID
gen = idgenerator.NewRandomTimestamped()
traceID = gen.TraceID()
)
if traceID.Empty() {
t.Errorf("Expected valid TraceID, got: %+v", traceID)
}
if traceID.Low == 0 {
t.Error("Expected TraceID.Low to have value, got 0")
}
if traceID.High == 0 {
t.Error("Expected TraceID.High to have value, got 0")
}
spanID = gen.SpanID(traceID)
if want, have := model.ID(traceID.Low), spanID; want != have {
t.Errorf("Expected root span to have span ID %d, got %d", want, have)
}
spanID = gen.SpanID(model.TraceID{})
if spanID == 0 {
t.Errorf("Expected child span to have a valid span ID, got 0")
}
// test chronological order
var ids []model.TraceID
for i := 0; i < 1000; i++ {
ids = append(ids, gen.TraceID())
}
var latestTS uint64
for idx, traceID := range ids {
if newVal, oldVal := traceID.High>>32, latestTS; newVal < oldVal {
t.Errorf("[%d] expected a higher timestamp part in traceid but got: old: %d new: %d", idx, oldVal, newVal)
}
latestTS = traceID.High >> 32
}
}
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