wip: e2e

Guardfile

@@ -0,0 +1,22 @@
+guard :shell do
+  watch /^selfupdate\/.+\.go$/ do |m|
+    puts "#{Time.now}: #{m[0]}"
+    case m[0]
+    when /_test\.go$/
+      parent = File.dirname m[0]
+      sources = Dir["#{parent}/*.go"].reject{|p| p.end_with? '_test.go'}.join(' ')
+      system "go test -v -short #{m[0]} #{sources}"
+    else
+      system 'go build ./selfupdate/'
+    end
+  end
+
+  watch /^cmd\/selfupdate-example\/.+\.go$/ do |m|
+    puts "#{Time.now}: #{m[0]}"
+    system 'go build ./cmd/selfupdate-example/'
+  end
+
+  watch /^testdata\// do |m|
+    system "go test -v -short ./selfupdate/"
+  end
+end

cmd/selfupdate-example/main.go

@@ -10,11 +10,11 @@ import (
 
 const version = "1.2.3"
 
-func selfUpdate() error {
+func selfUpdate(slug string) error {
 	selfupdate.EnableLog()
 
 	previous := semver.MustParse(version)
-	latest, err := selfupdate.UpdateSelf(previous, "rhysd/go-github-selfupdate")
+	latest, err := selfupdate.UpdateSelf(previous, slug)
 	if err != nil {
 		return err
 	}
@@ -29,7 +29,7 @@ func selfUpdate() error {
 }
 
 func usage() {
-	fmt.Fprintln(os.Stderr, "Usage: selfupdate-example [flags]")
+	fmt.Fprintln(os.Stderr, "Usage: selfupdate-example [flags]\n")
 	flag.PrintDefaults()
 }
 
@@ -37,6 +37,7 @@ func main() {
 	help := flag.Bool("help", false, "Show this help")
 	ver := flag.Bool("version", false, "Show version")
 	update := flag.Bool("selfupdate", false, "Try go-github-selfupdate via GitHub")
+	slug := flag.String("slug", "rhysd/go-github-selfupdate", "Repository of this command")
 
 	flag.Usage = usage
 	flag.Parse()
@@ -52,7 +53,7 @@ func main() {
 	}
 
 	if *update {
-		if err := selfUpdate(); err != nil {
+		if err := selfUpdate(*slug); err != nil {
 			fmt.Fprintln(os.Stderr, err)
 			os.Exit(1)
 		}

selfupdate/e2e_test.go

@@ -0,0 +1,16 @@
+package selfupdate
+
+import (
+	"os/exec"
+	"testing"
+)
+
+func init() {
+	if err := exec.Command("go", "build", "../cmd/selfupdate-example/main.go").Run(); err != nil {
+		panic(err)
+	}
+}
+
+func TestRunSelfUpdateExample(t *testing.T) {
+	t.Fatal("TODO")
+}

selfupdate/update.go

@@ -16,7 +16,7 @@ import (
 	"strings"
 )
 
-func uncompress(src io.ReadCloser, url, cmd string) (io.Reader, error) {
+func uncompress(src io.Reader, url, cmd string) (io.Reader, error) {
 	if strings.HasSuffix(url, ".zip") {
 		// Zip format requires its file size for uncompressing.
 		// So we need to read the HTTP response into a buffer at first.