Merge pull request #20 from dnephin/add-vendor

Fix vendor, update to new spf13/pflag behaviour

.circleci/config.yml

@@ -21,7 +21,7 @@ jobs:
                 dep ensure
             docker cp \
                 deps-$CIRCLE_BUILD_NUM:/go/src/gotest.tools/gotestsum/vendor \
-                vendor
+                .
       - run:
           name: "Lint"
           command: |

Gopkg.toml

@@ -1,3 +1,7 @@
+[prune]
+  non-go = true
+  go-tests = true
+  unused-packages = true
 
 [[constraint]]
   name = "github.com/google/go-cmp"
@@ -15,11 +19,6 @@
   name = "github.com/spf13/pflag"
   version = "1.0.0"
 
-[prune]
-  non-go = true
-  go-tests = true
-  unused-packages = true
-
 [[constraint]]
   name = "github.com/sirupsen/logrus"
   version = "1.0.5"

main.go

@@ -18,7 +18,12 @@ import (
 func main() {
 	name := os.Args[0]
 	flags, opts := setupFlags(name)
-	if err := flags.Parse(os.Args[1:]); err != nil {
+	switch err := flags.Parse(os.Args[1:]); {
+	case err == pflag.ErrHelp:
+		os.Exit(0)
+	case err != nil:
+		log.Error(err.Error())
+		flags.Usage()
 		os.Exit(1)
 	}
 	opts.args = flags.Args()
@@ -173,6 +178,10 @@ type proc struct {
 }
 
 func startGoTest(ctx context.Context, args []string) (proc, error) {
+	if len(args) == 0 {
+		return proc{}, errors.New("missing command to run")
+	}
+
 	ctx, cancel := context.WithCancel(ctx)
 	p := proc{
 		cmd:    exec.CommandContext(ctx, args[0], args[1:]...),