mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-14 10:13:10 +02:00
348 lines
10 KiB
Go
348 lines
10 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package oteltest_test
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import (
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"context"
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"fmt"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"go.opentelemetry.io/otel/internal/matchers"
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"go.opentelemetry.io/otel/label"
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"go.opentelemetry.io/otel/oteltest"
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"go.opentelemetry.io/otel/trace"
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)
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func TestTracer(t *testing.T) {
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tp := oteltest.NewTracerProvider()
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oteltest.NewHarness(t).TestTracer(func() func() trace.Tracer {
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tp := oteltest.NewTracerProvider()
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var i uint64
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return func() trace.Tracer {
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return tp.Tracer(fmt.Sprintf("tracer %d", atomic.AddUint64(&i, 1)))
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}
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}())
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t.Run("#Start", func(t *testing.T) {
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testTracedSpan(t, func(tracer trace.Tracer, name string) (trace.Span, error) {
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_, span := tracer.Start(context.Background(), name)
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return span, nil
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})
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t.Run("uses the start time from WithTimestamp", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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expectedStartTime := time.Now().AddDate(5, 0, 0)
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subject := tp.Tracer(t.Name())
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_, span := subject.Start(context.Background(), "test", trace.WithTimestamp(expectedStartTime))
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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e.Expect(testSpan.StartTime()).ToEqual(expectedStartTime)
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})
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t.Run("uses the attributes from WithAttributes", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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attr1 := label.String("a", "1")
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attr2 := label.String("b", "2")
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subject := tp.Tracer(t.Name())
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_, span := subject.Start(context.Background(), "test", trace.WithAttributes(attr1, attr2))
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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attributes := testSpan.Attributes()
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e.Expect(attributes[attr1.Key]).ToEqual(attr1.Value)
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e.Expect(attributes[attr2.Key]).ToEqual(attr2.Value)
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})
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t.Run("uses the current span from context as parent", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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parent, parentSpan := subject.Start(context.Background(), "parent")
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parentSpanContext := parentSpan.SpanContext()
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_, span := subject.Start(parent, "child")
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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childSpanContext := testSpan.SpanContext()
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e.Expect(childSpanContext.TraceID).ToEqual(parentSpanContext.TraceID)
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e.Expect(childSpanContext.SpanID).NotToEqual(parentSpanContext.SpanID)
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e.Expect(testSpan.ParentSpanID()).ToEqual(parentSpanContext.SpanID)
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})
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t.Run("uses the current span from context as parent, even if it has remote span context", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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parent, parentSpan := subject.Start(context.Background(), "parent")
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_, remoteParentSpan := subject.Start(context.Background(), "remote not-a-parent")
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parent = trace.ContextWithRemoteSpanContext(parent, remoteParentSpan.SpanContext())
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parentSpanContext := parentSpan.SpanContext()
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_, span := subject.Start(parent, "child")
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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childSpanContext := testSpan.SpanContext()
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e.Expect(childSpanContext.TraceID).ToEqual(parentSpanContext.TraceID)
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e.Expect(childSpanContext.SpanID).NotToEqual(parentSpanContext.SpanID)
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e.Expect(testSpan.ParentSpanID()).ToEqual(parentSpanContext.SpanID)
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})
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t.Run("uses the remote span context from context as parent, if current span is missing", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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_, remoteParentSpan := subject.Start(context.Background(), "remote parent")
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parent := trace.ContextWithRemoteSpanContext(context.Background(), remoteParentSpan.SpanContext())
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remoteParentSpanContext := remoteParentSpan.SpanContext()
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_, span := subject.Start(parent, "child")
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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childSpanContext := testSpan.SpanContext()
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e.Expect(childSpanContext.TraceID).ToEqual(remoteParentSpanContext.TraceID)
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e.Expect(childSpanContext.SpanID).NotToEqual(remoteParentSpanContext.SpanID)
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e.Expect(testSpan.ParentSpanID()).ToEqual(remoteParentSpanContext.SpanID)
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})
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t.Run("creates new root when both current span and remote span context are missing", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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_, parentSpan := subject.Start(context.Background(), "not-a-parent")
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_, remoteParentSpan := subject.Start(context.Background(), "remote not-a-parent")
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parentSpanContext := parentSpan.SpanContext()
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remoteParentSpanContext := remoteParentSpan.SpanContext()
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_, span := subject.Start(context.Background(), "child")
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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childSpanContext := testSpan.SpanContext()
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e.Expect(childSpanContext.TraceID).NotToEqual(parentSpanContext.TraceID)
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e.Expect(childSpanContext.TraceID).NotToEqual(remoteParentSpanContext.TraceID)
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e.Expect(childSpanContext.SpanID).NotToEqual(parentSpanContext.SpanID)
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e.Expect(childSpanContext.SpanID).NotToEqual(remoteParentSpanContext.SpanID)
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e.Expect(testSpan.ParentSpanID().IsValid()).ToBeFalse()
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})
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t.Run("creates new root when requested, even if both current span and remote span context are in context", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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parentCtx, parentSpan := subject.Start(context.Background(), "not-a-parent")
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_, remoteParentSpan := subject.Start(context.Background(), "remote not-a-parent")
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parentSpanContext := parentSpan.SpanContext()
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remoteParentSpanContext := remoteParentSpan.SpanContext()
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parentCtx = trace.ContextWithRemoteSpanContext(parentCtx, remoteParentSpanContext)
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_, span := subject.Start(parentCtx, "child", trace.WithNewRoot())
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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childSpanContext := testSpan.SpanContext()
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e.Expect(childSpanContext.TraceID).NotToEqual(parentSpanContext.TraceID)
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e.Expect(childSpanContext.TraceID).NotToEqual(remoteParentSpanContext.TraceID)
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e.Expect(childSpanContext.SpanID).NotToEqual(parentSpanContext.SpanID)
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e.Expect(childSpanContext.SpanID).NotToEqual(remoteParentSpanContext.SpanID)
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e.Expect(testSpan.ParentSpanID().IsValid()).ToBeFalse()
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expectedLinks := []trace.Link{
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{
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SpanContext: parentSpanContext,
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Attributes: []label.KeyValue{
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label.String("ignored-on-demand", "current"),
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},
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},
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{
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SpanContext: remoteParentSpanContext,
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Attributes: []label.KeyValue{
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label.String("ignored-on-demand", "remote"),
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},
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},
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}
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tsLinks := testSpan.Links()
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gotLinks := make([]trace.Link, 0, len(tsLinks))
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for sc, attributes := range tsLinks {
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gotLinks = append(gotLinks, trace.Link{
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SpanContext: sc,
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Attributes: attributes,
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})
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}
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e.Expect(gotLinks).ToMatchInAnyOrder(expectedLinks)
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})
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t.Run("uses the links provided through WithLinks", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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_, span := subject.Start(context.Background(), "link1")
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link1 := trace.Link{
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SpanContext: span.SpanContext(),
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Attributes: []label.KeyValue{
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label.String("a", "1"),
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},
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}
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_, span = subject.Start(context.Background(), "link2")
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link2 := trace.Link{
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SpanContext: span.SpanContext(),
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Attributes: []label.KeyValue{
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label.String("b", "2"),
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},
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}
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_, span = subject.Start(context.Background(), "test", trace.WithLinks(link1, link2))
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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links := testSpan.Links()
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e.Expect(links[link1.SpanContext]).ToEqual(link1.Attributes)
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e.Expect(links[link2.SpanContext]).ToEqual(link2.Attributes)
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})
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})
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}
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func testTracedSpan(t *testing.T, fn func(tracer trace.Tracer, name string) (trace.Span, error)) {
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tp := oteltest.NewTracerProvider()
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t.Run("starts a span with the expected name", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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expectedName := "test name"
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span, err := fn(subject, expectedName)
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e.Expect(err).ToBeNil()
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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e.Expect(testSpan.Name()).ToEqual(expectedName)
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})
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t.Run("uses the current time as the start time", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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subject := tp.Tracer(t.Name())
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start := time.Now()
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span, err := fn(subject, "test")
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end := time.Now()
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e.Expect(err).ToBeNil()
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testSpan, ok := span.(*oteltest.Span)
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e.Expect(ok).ToBeTrue()
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e.Expect(testSpan.StartTime()).ToBeTemporally(matchers.AfterOrSameTime, start)
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e.Expect(testSpan.StartTime()).ToBeTemporally(matchers.BeforeOrSameTime, end)
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})
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t.Run("calls SpanRecorder.OnStart", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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sr := new(oteltest.StandardSpanRecorder)
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subject := oteltest.NewTracerProvider(oteltest.WithSpanRecorder(sr)).Tracer(t.Name())
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subject.Start(context.Background(), "span1")
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e.Expect(len(sr.Started())).ToEqual(1)
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span, err := fn(subject, "span2")
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e.Expect(err).ToBeNil()
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spans := sr.Started()
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e.Expect(len(spans)).ToEqual(2)
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e.Expect(spans[1]).ToEqual(span)
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})
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t.Run("can be run concurrently with another call", func(t *testing.T) {
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t.Parallel()
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e := matchers.NewExpecter(t)
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sr := new(oteltest.StandardSpanRecorder)
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subject := oteltest.NewTracerProvider(oteltest.WithSpanRecorder(sr)).Tracer(t.Name())
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numSpans := 2
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var wg sync.WaitGroup
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wg.Add(numSpans)
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for i := 0; i < numSpans; i++ {
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go func() {
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_, err := fn(subject, "test")
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e.Expect(err).ToBeNil()
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wg.Done()
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}()
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}
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wg.Wait()
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e.Expect(len(sr.Started())).ToEqual(numSpans)
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})
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}
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