| // Copyright 2017, OpenCensus 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 ocgrpc |
| |
| import ( |
| "testing" |
| |
| "context" |
| "go.opencensus.io/trace" |
| "google.golang.org/grpc/metadata" |
| "google.golang.org/grpc/stats" |
| ) |
| |
| func TestClientHandler_traceTagRPC(t *testing.T) { |
| ch := &ClientHandler{} |
| ch.StartOptions.Sampler = trace.AlwaysSample() |
| rti := &stats.RPCTagInfo{ |
| FullMethodName: "xxx", |
| } |
| ctx := context.Background() |
| ctx = ch.traceTagRPC(ctx, rti) |
| |
| span := trace.FromContext(ctx) |
| if span == nil { |
| t.Fatal("expected span, got nil") |
| } |
| if !span.IsRecordingEvents() { |
| t.Errorf("span should be sampled") |
| } |
| md, ok := metadata.FromOutgoingContext(ctx) |
| if !ok || len(md) == 0 || len(md[traceContextKey]) == 0 { |
| t.Fatal("no metadata") |
| } |
| } |
