| // Copyright 2020 Google LLC |
| // |
| // 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 mypackagebeingfuzzed |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "runtime/pprof" |
| "testing" |
| ) |
| |
| func TestFuzzCorpus(t *testing.T) { |
| dir := os.Getenv("FUZZ_CORPUS_DIR") |
| if dir == "" { |
| t.Logf("No fuzzing corpus directory set") |
| return |
| } |
| infos, err := ioutil.ReadDir(dir) |
| if err != nil { |
| t.Logf("Not fuzzing corpus directory %s", err) |
| return |
| } |
| filename := "" |
| defer func() { |
| if r := recover(); r != nil { |
| t.Error("Fuzz panicked in "+filename, r) |
| } |
| }() |
| profname := os.Getenv("FUZZ_PROFILE_NAME") |
| if profname != "" { |
| f, err := os.Create(profname + ".cpu.prof") |
| if err != nil { |
| t.Logf("error creating profile file %s\n", err) |
| } else { |
| _ = pprof.StartCPUProfile(f) |
| } |
| } |
| for i := range infos { |
| filename = dir + infos[i].Name() |
| data, err := ioutil.ReadFile(filename) |
| if err != nil { |
| t.Error("Failed to read corpus file", err) |
| } |
| FuzzFunction(data) |
| } |
| if profname != "" { |
| pprof.StopCPUProfile() |
| f, err := os.Create(profname + ".heap.prof") |
| if err != nil { |
| t.Logf("error creating heap profile file %s\n", err) |
| } |
| if err = pprof.WriteHeapProfile(f); err != nil { |
| t.Logf("error writing heap profile file %s\n", err) |
| } |
| f.Close() |
| } |
| } |
