1 // Copyright 2022 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package test 16 17 import ( 18 "context" 19 "testing" 20 ) 21 22 type testKeyType int 23 24 // testKey is the key value for testing.T in a context.Context 25 var testKey testKeyType 26 27 func TestFromContext(ctx context.Context) *testing.T { 28 v := ctx.Value(testKey) 29 if v == nil { 30 return nil 31 } 32 return v.(*testing.T) 33 } 34 35 func WithContext(ctx context.Context, t *testing.T) context.Context { 36 return context.WithValue(ctx, testKey, t) 37 } 38