| // Copyright 2015 Google Inc. All rights reserved. |
| // |
| // 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 main |
| |
| import ( |
| "bytes" |
| "flag" |
| "fmt" |
| "go/ast" |
| "go/doc" |
| "go/parser" |
| "go/token" |
| "io/ioutil" |
| "os" |
| "reflect" |
| "sort" |
| "strings" |
| "testing" |
| "text/template" |
| ) |
| |
| var ( |
| output = flag.String("o", "", "output filename") |
| pkg = flag.String("pkg", "", "test package") |
| exitCode = 0 |
| ) |
| |
| type data struct { |
| Package string |
| Tests []string |
| Examples []*doc.Example |
| HasMain bool |
| MainStartTakesFuzzers bool |
| } |
| |
| func findTests(srcs []string) (tests []string, examples []*doc.Example, hasMain bool) { |
| for _, src := range srcs { |
| f, err := parser.ParseFile(token.NewFileSet(), src, nil, parser.ParseComments) |
| if err != nil { |
| panic(err) |
| } |
| for _, obj := range f.Scope.Objects { |
| if obj.Kind != ast.Fun || !strings.HasPrefix(obj.Name, "Test") { |
| continue |
| } |
| if obj.Name == "TestMain" { |
| hasMain = true |
| } else { |
| tests = append(tests, obj.Name) |
| } |
| } |
| |
| examples = append(examples, doc.Examples(f)...) |
| } |
| sort.Strings(tests) |
| return |
| } |
| |
| // Returns true for go1.18+, where testing.MainStart takes an extra slice of fuzzers. |
| func mainStartTakesFuzzers() bool { |
| return reflect.TypeOf(testing.MainStart).NumIn() > 4 |
| } |
| |
| func main() { |
| flag.Parse() |
| |
| if flag.NArg() == 0 { |
| fmt.Fprintln(os.Stderr, "error: must pass at least one input") |
| exitCode = 1 |
| return |
| } |
| |
| buf := &bytes.Buffer{} |
| |
| tests, examples, hasMain := findTests(flag.Args()) |
| |
| d := data{ |
| Package: *pkg, |
| Tests: tests, |
| Examples: examples, |
| HasMain: hasMain, |
| MainStartTakesFuzzers: mainStartTakesFuzzers(), |
| } |
| |
| err := testMainTmpl.Execute(buf, d) |
| if err != nil { |
| panic(err) |
| } |
| |
| err = ioutil.WriteFile(*output, buf.Bytes(), 0666) |
| if err != nil { |
| panic(err) |
| } |
| } |
| |
| var testMainTmpl = template.Must(template.New("testMain").Parse(` |
| package main |
| |
| import ( |
| "io" |
| {{if not .HasMain}} |
| "os" |
| {{end}} |
| "reflect" |
| "regexp" |
| "testing" |
| "time" |
| |
| pkg "{{.Package}}" |
| ) |
| |
| var t = []testing.InternalTest{ |
| {{range .Tests}} |
| {"{{.}}", pkg.{{.}}}, |
| {{end}} |
| } |
| |
| var e = []testing.InternalExample{ |
| {{range .Examples}} |
| {{if or .Output .EmptyOutput}} |
| {"{{.Name}}", pkg.Example{{.Name}}, {{.Output | printf "%q" }}, {{.Unordered}}}, |
| {{end}} |
| {{end}} |
| } |
| |
| var matchPat string |
| var matchRe *regexp.Regexp |
| |
| type matchString struct{} |
| |
| func MatchString(pat, str string) (result bool, err error) { |
| if matchRe == nil || matchPat != pat { |
| matchPat = pat |
| matchRe, err = regexp.Compile(matchPat) |
| if err != nil { |
| return |
| } |
| } |
| return matchRe.MatchString(str), nil |
| } |
| |
| func (matchString) MatchString(pat, str string) (bool, error) { |
| return MatchString(pat, str) |
| } |
| |
| func (matchString) StartCPUProfile(w io.Writer) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) StopCPUProfile() { |
| } |
| |
| func (matchString) WriteHeapProfile(w io.Writer) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) WriteProfileTo(string, io.Writer, int) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) ImportPath() string { |
| return "{{.Package}}" |
| } |
| |
| func (matchString) StartTestLog(io.Writer) { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) StopTestLog() error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) SetPanicOnExit0(bool) { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) CoordinateFuzzing(time.Duration, int64, time.Duration, int64, int, []corpusEntry, []reflect.Type, string, string) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) RunFuzzWorker(func(corpusEntry) error) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) ReadCorpus(string, []reflect.Type) ([]corpusEntry, error) { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) CheckCorpus([]interface{}, []reflect.Type) error { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) ResetCoverage() { |
| panic("shouldn't get here") |
| } |
| |
| func (matchString) SnapshotCoverage() { |
| panic("shouldn't get here") |
| } |
| |
| type corpusEntry = struct { |
| Parent string |
| Path string |
| Data []byte |
| Values []interface{} |
| Generation int |
| IsSeed bool |
| } |
| |
| func main() { |
| {{if .MainStartTakesFuzzers }} |
| m := testing.MainStart(matchString{}, t, nil, nil, e) |
| {{else}} |
| m := testing.MainStart(matchString{}, t, nil, e) |
| {{end}} |
| {{if .HasMain}} |
| pkg.TestMain(m) |
| {{else}} |
| os.Exit(m.Run()) |
| {{end}} |
| } |
| `)) |