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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 trace
import (
"context"
"testing"
)
func TestNewNoopTracerProvider(t *testing.T) {
got, want := NewNoopTracerProvider(), noopTracerProvider{}
if got != want {
t.Errorf("NewNoopTracerProvider() returned %#v, want %#v", got, want)
}
}
func TestNoopTracerProviderTracer(t *testing.T) {
tp := NewNoopTracerProvider()
got, want := tp.Tracer(""), noopTracer{}
if got != want {
t.Errorf("noopTracerProvider.Tracer() returned %#v, want %#v", got, want)
}
}
func TestNoopTracerStart(t *testing.T) {
ctx := context.Background()
tracer := NewNoopTracerProvider().Tracer("test instrumentation")
var span Span
ctx, span = tracer.Start(ctx, "span name")
got, ok := span.(noopSpan)
if !ok {
t.Fatalf("noopTracer.Start() returned a non-noopSpan: %#v", span)
}
want := noopSpan{}
if got != want {
t.Errorf("noopTracer.Start() returned %#v, want %#v", got, want)
}
got, ok = SpanFromContext(ctx).(noopSpan)
if !ok {
t.Fatal("noopTracer.Start() did not set span as current in returned context")
}
if got != want {
t.Errorf("noopTracer.Start() current span in returned context set to %#v, want %#v", got, want)
}
}
func TestNoopSpan(t *testing.T) {
tracer := NewNoopTracerProvider().Tracer("test instrumentation")
_, s := tracer.Start(context.Background(), "test span")
span := s.(noopSpan)
if got, want := span.SpanContext(), (SpanContext{}); !assertSpanContextEqual(got, want) {
t.Errorf("span.SpanContext() returned %#v, want %#v", got, want)
}
if got, want := span.IsRecording(), false; got != want {
t.Errorf("span.IsRecording() returned %#v, want %#v", got, want)
}
}
func TestNonRecordingSpanTracerStart(t *testing.T) {
tid, err := TraceIDFromHex("01000000000000000000000000000000")
if err != nil {
t.Fatalf("failure creating TraceID: %s", err.Error())
}
sid, err := SpanIDFromHex("0200000000000000")
if err != nil {
t.Fatalf("failure creating SpanID: %s", err.Error())
}
sc := NewSpanContext(SpanContextConfig{TraceID: tid, SpanID: sid})
ctx := ContextWithSpanContext(context.Background(), sc)
_, span := NewNoopTracerProvider().Tracer("test instrumentation").Start(ctx, "span1")
if got, want := span.SpanContext(), sc; !assertSpanContextEqual(got, want) {
t.Errorf("SpanContext not carried by nonRecordingSpan. got %#v, want %#v", got, want)
}
}