build: add -race flag to integration tester test_all

fstest/test_all/run.go

@@ -286,6 +286,9 @@ func (r *Run) MakeTestBinary() {
 	binaryName := r.BinaryName()
 	log.Printf("%s: Making test binary %q", r.Path, binaryName)
 	CmdLine := []string{"go", "test", "-c"}
+	if *race {
+		CmdLine = append(CmdLine, "-race")
+	}
 	if *dryRun {
 		log.Printf("Not executing: %v", CmdLine)
 		return

fstest/test_all/test_all.go

@@ -35,6 +35,7 @@ var (
 	clean        = flag.Bool("clean", false, "Instead of testing, clean all left over test directories")
 	runOnly      = flag.String("run", "", "Run only those tests matching the regexp supplied")
 	timeout      = flag.Duration("timeout", 60*time.Minute, "Maximum time to run each test for before giving up")
+	race         = flag.Bool("race", false, "If set run the tests under the race detector")
 	configFile   = flag.String("config", "fstest/test_all/config.yaml", "Path to config file")
 	outputDir    = flag.String("output", path.Join(os.TempDir(), "rclone-integration-tests"), "Place to store results")
 	emailReport  = flag.String("email", "", "Set to email the report to the address supplied")