istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/bootstrap/fuzz_test.go (about) 1 // Copyright Istio Authors 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 bootstrap 16 17 import ( 18 "bytes" 19 "io" 20 "os" 21 "testing" 22 23 fuzz "github.com/AdaLogics/go-fuzz-headers" 24 ) 25 26 func FuzzWriteTo(f *testing.F) { 27 f.Fuzz(func(t *testing.T, data []byte) { 28 ff := fuzz.NewConsumer(data) 29 30 // create config 31 cfg := Config{} 32 33 err := ff.GenerateStruct(&cfg) 34 if err != nil { 35 return 36 } 37 38 if cfg.Metadata == nil { 39 return 40 } 41 if cfg.Metadata.ProxyConfig == nil { 42 return 43 } 44 45 i := New(cfg) 46 47 // create template file 48 templateBytes, err := ff.GetBytes() 49 if err != nil { 50 return 51 } 52 53 tf, err := os.Create("templateFile") 54 if err != nil { 55 return 56 } 57 defer func() { 58 tf.Close() 59 os.Remove("templateFile") 60 }() 61 _, err = tf.Write(templateBytes) 62 if err != nil { 63 return 64 } 65 66 // call target 67 var buf bytes.Buffer 68 i.WriteTo("templateFile", io.Writer(&buf)) 69 }) 70 }