| // 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 gotestmain |
| |
| import ( |
| "bytes" |
| "flag" |
| "fmt" |
| "go/ast" |
| "go/parser" |
| "go/token" |
| "io/ioutil" |
| "os" |
| "strings" |
| "text/template" |
| ) |
| |
| var ( |
| output = flag.String("o", "", "output filename") |
| pkg = flag.String("pkg", "", "test package") |
| exitCode = 0 |
| ) |
| |
| type data struct { |
| Package string |
| Tests []string |
| } |
| |
| func findTests(srcs []string) (tests []string) { |
| for _, src := range srcs { |
| f, err := parser.ParseFile(token.NewFileSet(), src, nil, 0) |
| if err != nil { |
| panic(err) |
| } |
| for _, obj := range f.Scope.Objects { |
| if obj.Kind != ast.Fun || !strings.HasPrefix(obj.Name, "Test") { |
| continue |
| } |
| tests = append(tests, obj.Name) |
| } |
| } |
| return |
| } |
| |
| 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{} |
| |
| d := data{ |
| Package: *pkg, |
| Tests: findTests(flag.Args()), |
| } |
| |
| 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 ( |
| "testing" |
| |
| pkg "{{.Package}}" |
| ) |
| |
| var t = []testing.InternalTest{ |
| {{range .Tests}} |
| {"{{.}}", pkg.{{.}}}, |
| {{end}} |
| } |
| |
| func matchString(pat, str string) (bool, error) { |
| return true, nil |
| } |
| |
| func main() { |
| testing.Main(matchString, t, nil, nil) |
| } |
| `)) |