| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 util |
| |
| import ( |
| "context" |
| "testing" |
| |
| "google.golang.org/grpc/metadata" |
| ) |
| |
| func TestFromMetadata(t *testing.T) { |
| v := FromMetadata(context.Background(), "a") |
| if v != "" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| ctx := context.WithValue(context.Background(), "a", "b") |
| v = FromMetadata(ctx, "a") |
| if v != "" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| ctx = metadata.NewIncomingContext(ctx, metadata.MD{}) |
| v = FromMetadata(ctx, "a") |
| if v != "" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| ctx = metadata.NewIncomingContext(ctx, metadata.MD{"a": []string{}}) |
| v = FromMetadata(ctx, "a") |
| if v != "" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| ctx = metadata.NewIncomingContext(ctx, metadata.MD{"a": []string{"b", "c"}}) |
| v = FromMetadata(ctx, "a") |
| if v != "b" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| |
| // clone |
| cloneCtx := CloneContext(ctx) |
| v = FromMetadata(cloneCtx, "a") |
| if v != "b" { |
| t.Fatalf("TestFromMetadata failed") |
| } |
| } |