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opentelemetry-go/api/global/trace_test.go
Tyler Yahn a98bb979df
Update Tracer API with instrumentation version (#802)
* Update Tracer API with instrumentation version

Add option to the `Provider.Tracer` method to specify the
instrumentation version.

Update the global, noop, opentracing bridge, and default SDK
implementations.

This does not propagate the instrumentation library version to the
exported span. That is left for a follow-on PR.

* Revert trace_test.go

This is for the next PR.

* Update SDK to include version for default instrumentation

If the instrumentation library name is empty and the default
instrumentation is uses, include the SDK version.

* Update comments and documentation

* Remove default instrumentation version
2020-06-09 11:47:54 -07:00

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1.2 KiB
Go

// Copyright The OpenTelemetry 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 global_test
import (
"testing"
"go.opentelemetry.io/otel/api/global"
"go.opentelemetry.io/otel/api/trace"
)
type testTraceProvider struct{}
var _ trace.Provider = &testTraceProvider{}
func (*testTraceProvider) Tracer(_ string, _ ...trace.TracerOption) trace.Tracer {
return &trace.NoopTracer{}
}
func TestMultipleGlobalTracerProvider(t *testing.T) {
p1 := testTraceProvider{}
p2 := trace.NoopProvider{}
global.SetTraceProvider(&p1)
global.SetTraceProvider(&p2)
got := global.TraceProvider()
want := &p2
if got != want {
t.Fatalf("Provider: got %p, want %p\n", got, want)
}
}