mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
94 lines
2.8 KiB
Go
94 lines
2.8 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 global_test
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/internal/global"
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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 TestTraceWithSDK(t *testing.T) {
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global.ResetForTest()
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ctx := context.Background()
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gtp := otel.GetTracerProvider()
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tracer1 := gtp.Tracer("pre")
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// This is started before an SDK was registered and should be dropped.
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_, span1 := tracer1.Start(ctx, "span1")
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sr := new(oteltest.StandardSpanRecorder)
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tp := oteltest.NewTracerProvider(oteltest.WithSpanRecorder(sr))
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otel.SetTracerProvider(tp)
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// This span was started before initialization, it is expected to be dropped.
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span1.End()
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// The existing Tracer should have been configured to now use the configured SDK.
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_, span2 := tracer1.Start(ctx, "span2")
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span2.End()
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// The global TracerProvider should now create Tracers that also use the newly configured SDK.
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tracer2 := gtp.Tracer("post")
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_, span3 := tracer2.Start(ctx, "span3")
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span3.End()
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filterNames := func(spans []*oteltest.Span) []string {
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names := make([]string, len(spans))
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for i := range spans {
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names[i] = spans[i].Name()
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}
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return names
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}
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expected := []string{"span2", "span3"}
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assert.ElementsMatch(t, expected, filterNames(sr.Started()))
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assert.ElementsMatch(t, expected, filterNames(sr.Completed()))
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}
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type fnTracerProvider struct {
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tracer func(string, ...trace.TracerOption) trace.Tracer
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}
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func (fn fnTracerProvider) Tracer(instrumentationName string, opts ...trace.TracerOption) trace.Tracer {
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return fn.tracer(instrumentationName, opts...)
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}
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func TestTraceProviderDelegates(t *testing.T) {
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global.ResetForTest()
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// Retrieve the placeholder TracerProvider.
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gtp := otel.GetTracerProvider()
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// Configure it with a spy.
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called := false
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otel.SetTracerProvider(fnTracerProvider{
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tracer: func(name string, opts ...trace.TracerOption) trace.Tracer {
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called = true
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assert.Equal(t, "abc", name)
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assert.Equal(t, []trace.TracerOption{trace.WithInstrumentationVersion("xyz")}, opts)
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return trace.NewNoopTracerProvider().Tracer("")
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},
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})
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gtp.Tracer("abc", trace.WithInstrumentationVersion("xyz"))
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assert.True(t, called, "expected configured TraceProvider to be called")
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}
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