diff options
Diffstat (limited to 'infra/bots/gen_tasks.go')
| -rw-r--r-- | infra/bots/gen_tasks.go | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/infra/bots/gen_tasks.go b/infra/bots/gen_tasks.go index 50af1b9444..0751124368 100644 --- a/infra/bots/gen_tasks.go +++ b/infra/bots/gen_tasks.go @@ -11,6 +11,7 @@ package main import ( "bytes" "encoding/json" + "flag" "fmt" "io/ioutil" "os" @@ -62,6 +63,9 @@ var ( // Path to the infra/bots directory. infrabotsDir = "" + + // Flags. + testing = flag.Bool("test", false, "Run in test mode: verify that the output hasn't changed.") ) // deriveCompileTaskName returns the name of a compile task based on the given @@ -492,7 +496,6 @@ func main() { } // Write the tasks.json file. - outFile := path.Join(root, specs.TASKS_CFG_FILE) b, err := json.MarshalIndent(cfg, "", " ") if err != nil { glog.Fatal(err) @@ -501,8 +504,21 @@ func main() { // much less readable. Replace the escape characters with the real // character. b = bytes.Replace(b, []byte("\\u003c"), []byte("<"), -1) - if err := ioutil.WriteFile(outFile, b, os.ModePerm); err != nil { - glog.Fatal(err) + + outFile := path.Join(root, specs.TASKS_CFG_FILE) + if *testing { + // Don't write the file; read it and compare. + expect, err := ioutil.ReadFile(outFile) + if err != nil { + glog.Fatal(err) + } + if !bytes.Equal(expect, b) { + glog.Fatalf("Expected no changes, but changes were found!") + } + } else { + if err := ioutil.WriteFile(outFile, b, os.ModePerm); err != nil { + glog.Fatal(err) + } } } |