enforce unique names

Signed-off-by: Jeff Carr <[email protected]>

1 files changed, 24 insertions, 4 deletions

diff --git a/example/main.go b/example/main.go
index 8187d57..923f27c 100644
--- a/example/main.go
+++ b/example/main.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"go.wit.com/lib/protobuf/zoopb"
+	"go.wit.com/log"
 )
 
 func main() {
@@ -11,10 +12,29 @@ func main() {
 	all = new(zoopb.Packages)
 	// r = zoopb.LoadJSON("go.wit.com/lib/protobuf/zoopb")
 
-	newP := new(zoopb.Package)
-	newP.Name = "bash"
-	newP.Version = "5.2.21"
-	all.Append(newP)
+	new1 := new(zoopb.Package)
+	new1.Name = "bash"
+	new1.Version = "5.2.21"
+	if all.Append(new1) {
+		log.Info("added", new1.Name, "ok")
+	} else {
+		log.Info("added", new1.Name, "failed")
+	}
+
+	new2 := new(zoopb.Package)
+	new2.Name = "go-clone"
+	new2.Version = "0.6.8" // good version of the macos
+	if all.Append(new2) {
+		log.Info("added", new2.Name, "ok")
+	} else {
+		log.Info("added", new2.Name, "failed")
+	}
+
+	if all.Append(new2) {
+		log.Info("added", new2.Name, "ok (this is bad)")
+	} else {
+		log.Info("added", new2.Name, "failed (but ok)")
+	}
 
 	fmt.Println("packages are:", len(all.Packages))
 }