resources: Add NewNamedResource helper

This makes the common pattern of NewResource, SetName, easier. It also
makes it less likely for you to forget to use SetName.

test/shell/libmgmt-change1.go

@@ -62,11 +62,10 @@ func (obj *MyGAPI) Graph() (*pgraph.Graph, error) {
 		return nil, err
 	}
 
-	n0, err := resources.NewResource("noop")
+	n0, err := resources.NewNamedResource("noop", "noop1")
 	if err != nil {
 		return nil, err
 	}
-	n0.SetName("noop1")
 	g.AddVertex(n0)
 
 	//g, err := config.NewGraphFromConfig(obj.data.Hostname, obj.data.World, obj.data.Noop)

test/shell/libmgmt-change2.go

@@ -69,28 +69,25 @@ func (obj *MyGAPI) Graph() (*pgraph.Graph, error) {
 	}
 
 	if !obj.flipflop {
-		n0, err := resources.NewResource("noop")
+		n0, err := resources.NewNamedResource("noop", "noop0")
 		if err != nil {
 			return nil, err
 		}
-		n0.SetName("noop0")
 		g.AddVertex(n0)
 
 	} else {
 		// NOTE: these will get autogrouped
-		n1, err := resources.NewResource("noop")
+		n1, err := resources.NewNamedResource("noop", "noop1")
 		if err != nil {
 			return nil, err
 		}
-		n1.SetName("noop1")
 		n1.Meta().AutoGroup = obj.autoGroup // enable or disable it
 		g.AddVertex(n1)
 
-		n2, err := resources.NewResource("noop")
+		n2, err := resources.NewNamedResource("noop", "noop2")
 		if err != nil {
 			return nil, err
 		}
-		n2.SetName("noop2")
 		n2.Meta().AutoGroup = obj.autoGroup // enable or disable it
 		g.AddVertex(n2)
 	}

test/test-examples.sh

@@ -36,7 +36,7 @@ rmdir "$tmpdir"	# cleanup
 
 if [[ -n "$failures" ]]; then
 	echo 'FAIL'
-	echo 'The following tests have failed:'
+	echo "The following tests (in: ${linkto}) have failed:"
 	echo -e "$failures"
 	exit 1
 fi