Move memory to gossip since that's what it is

gossip_test.go

@@ -0,0 +1,78 @@
+package gossip
+
+import (
+	"testing"
+
+	"github.com/micro/go-micro/registry"
+)
+
+func TestDelServices(t *testing.T) {
+	services := []*registry.Service{
+		{
+			Name:    "foo",
+			Version: "1.0.0",
+			Nodes: []*registry.Node{
+				{
+					Id:      "foo-123",
+					Address: "localhost",
+					Port:    9999,
+				},
+			},
+		},
+		{
+			Name:    "foo",
+			Version: "1.0.0",
+			Nodes: []*registry.Node{
+				{
+					Id:      "foo-123",
+					Address: "localhost",
+					Port:    6666,
+				},
+			},
+		},
+	}
+
+	servs := delServices([]*registry.Service{services[0]}, []*registry.Service{services[1]})
+	if i := len(servs); i > 0 {
+		t.Errorf("Expected 0 nodes, got %d: %+v", i, servs)
+	}
+	t.Logf("Services %+v", servs)
+}
+
+func TestDelNodes(t *testing.T) {
+	services := []*registry.Service{
+		{
+			Name:    "foo",
+			Version: "1.0.0",
+			Nodes: []*registry.Node{
+				{
+					Id:      "foo-123",
+					Address: "localhost",
+					Port:    9999,
+				},
+				{
+					Id:      "foo-321",
+					Address: "localhost",
+					Port:    6666,
+				},
+			},
+		},
+		{
+			Name:    "foo",
+			Version: "1.0.0",
+			Nodes: []*registry.Node{
+				{
+					Id:      "foo-123",
+					Address: "localhost",
+					Port:    6666,
+				},
+			},
+		},
+	}
+
+	nodes := delNodes(services[0].Nodes, services[1].Nodes)
+	if i := len(nodes); i != 1 {
+		t.Errorf("Expected only 1 node, got %d: %+v", i, nodes)
+	}
+	t.Logf("Nodes %+v", nodes)
+}