// 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) } if got, want := span.Tracer(), tracer; got != want { t.Errorf("span.Tracer() returned %#v, want %#v", got, want) } }