swarm: codebase split from go-ethereum (#1405)

network/simulation/bucket_test.go

@@ -0,0 +1,155 @@
+// Copyright 2018 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package simulation
+
+import (
+	"sync"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/node"
+	"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
+)
+
+// TestServiceBucket tests all bucket functionality using subtests.
+// It constructs a simulation of two nodes by adding items to their buckets
+// in ServiceFunc constructor, then by SetNodeItem. Testing UpNodesItems
+// is done by stopping one node and validating availability of its items.
+func TestServiceBucket(t *testing.T) {
+	testKey := "Key"
+	testValue := "Value"
+
+	sim := New(map[string]ServiceFunc{
+		"noop": func(ctx *adapters.ServiceContext, b *sync.Map) (node.Service, func(), error) {
+			b.Store(testKey, testValue+ctx.Config.ID.String())
+			return newNoopService(), nil, nil
+		},
+	})
+	defer sim.Close()
+
+	id1, err := sim.AddNode()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	id2, err := sim.AddNode()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Run("ServiceFunc bucket Store", func(t *testing.T) {
+		v, ok := sim.NodeItem(id1, testKey)
+		if !ok {
+			t.Fatal("bucket item not found")
+		}
+		s, ok := v.(string)
+		if !ok {
+			t.Fatal("bucket item value is not string")
+		}
+		if s != testValue+id1.String() {
+			t.Fatalf("expected %q, got %q", testValue+id1.String(), s)
+		}
+
+		v, ok = sim.NodeItem(id2, testKey)
+		if !ok {
+			t.Fatal("bucket item not found")
+		}
+		s, ok = v.(string)
+		if !ok {
+			t.Fatal("bucket item value is not string")
+		}
+		if s != testValue+id2.String() {
+			t.Fatalf("expected %q, got %q", testValue+id2.String(), s)
+		}
+	})
+
+	customKey := "anotherKey"
+	customValue := "anotherValue"
+
+	t.Run("SetNodeItem", func(t *testing.T) {
+		sim.SetNodeItem(id1, customKey, customValue)
+
+		v, ok := sim.NodeItem(id1, customKey)
+		if !ok {
+			t.Fatal("bucket item not found")
+		}
+		s, ok := v.(string)
+		if !ok {
+			t.Fatal("bucket item value is not string")
+		}
+		if s != customValue {
+			t.Fatalf("expected %q, got %q", customValue, s)
+		}
+
+		_, ok = sim.NodeItem(id2, customKey)
+		if ok {
+			t.Fatal("bucket item should not be found")
+		}
+	})
+
+	if err := sim.StopNode(id2); err != nil {
+		t.Fatal(err)
+	}
+
+	t.Run("UpNodesItems", func(t *testing.T) {
+		items := sim.UpNodesItems(testKey)
+
+		v, ok := items[id1]
+		if !ok {
+			t.Errorf("node 1 item not found")
+		}
+		s, ok := v.(string)
+		if !ok {
+			t.Fatal("node 1 item value is not string")
+		}
+		if s != testValue+id1.String() {
+			t.Fatalf("expected %q, got %q", testValue+id1.String(), s)
+		}
+
+		_, ok = items[id2]
+		if ok {
+			t.Errorf("node 2 item should not be found")
+		}
+	})
+
+	t.Run("NodeItems", func(t *testing.T) {
+		items := sim.NodesItems(testKey)
+
+		v, ok := items[id1]
+		if !ok {
+			t.Errorf("node 1 item not found")
+		}
+		s, ok := v.(string)
+		if !ok {
+			t.Fatal("node 1 item value is not string")
+		}
+		if s != testValue+id1.String() {
+			t.Fatalf("expected %q, got %q", testValue+id1.String(), s)
+		}
+
+		v, ok = items[id2]
+		if !ok {
+			t.Errorf("node 2 item not found")
+		}
+		s, ok = v.(string)
+		if !ok {
+			t.Fatal("node 1 item value is not string")
+		}
+		if s != testValue+id2.String() {
+			t.Fatalf("expected %q, got %q", testValue+id2.String(), s)
+		}
+	})
+}