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state_test.go
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state_test.go
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// 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
import (
"testing"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
func TestSetTracerProvider(t *testing.T) {
t.Cleanup(ResetForTest)
t.Run("Set With default is a noop", func(t *testing.T) {
ResetForTest()
SetTracerProvider(TracerProvider())
tp, ok := TracerProvider().(*tracerProvider)
if !ok {
t.Fatal("Global Tracer Provider should be the default tracer provider")
}
if tp.delegate != nil {
t.Fatal("tracer provider should not delegate when setting itself")
}
})
t.Run("First Set() should replace the delegate", func(t *testing.T) {
ResetForTest()
SetTracerProvider(trace.NewNoopTracerProvider())
_, ok := TracerProvider().(*tracerProvider)
if ok {
t.Fatal("Global Tracer Provider was not changed")
}
})
t.Run("Set() should delegate existing Tracer Providers", func(t *testing.T) {
ResetForTest()
tp := TracerProvider()
SetTracerProvider(trace.NewNoopTracerProvider())
ntp := tp.(*tracerProvider)
if ntp.delegate == nil {
t.Fatal("The delegated tracer providers should have a delegate")
}
})
}
func TestSetTextMapPropagator(t *testing.T) {
t.Cleanup(ResetForTest)
t.Run("Set With default is a noop", func(t *testing.T) {
ResetForTest()
SetTextMapPropagator(TextMapPropagator())
tmp, ok := TextMapPropagator().(*textMapPropagator)
if !ok {
t.Fatal("Global TextMap Propagator should be the default propagator")
}
if tmp.delegate != nil {
t.Fatal("TextMap propagator should not delegate when setting itself")
}
})
t.Run("First Set() should replace the delegate", func(t *testing.T) {
ResetForTest()
SetTextMapPropagator(propagation.TraceContext{})
_, ok := TextMapPropagator().(*textMapPropagator)
if ok {
t.Fatal("Global TextMap Propagator was not changed")
}
})
t.Run("Set() should delegate existing propagators", func(t *testing.T) {
ResetForTest()
p := TextMapPropagator()
SetTextMapPropagator(propagation.TraceContext{})
np := p.(*textMapPropagator)
if np.delegate == nil {
t.Fatal("The delegated TextMap propagators should have a delegate")
}
})
}