les: renamed lespay to vflux (#22347)

les/vflux/client/wrsiterator_test.go

@@ -0,0 +1,103 @@
+// Copyright 2020 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 client
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common/mclock"
+	"github.com/ethereum/go-ethereum/p2p/nodestate"
+)
+
+var (
+	testSetup     = &nodestate.Setup{}
+	sfTest1       = testSetup.NewFlag("test1")
+	sfTest2       = testSetup.NewFlag("test2")
+	sfTest3       = testSetup.NewFlag("test3")
+	sfTest4       = testSetup.NewFlag("test4")
+	sfiTestWeight = testSetup.NewField("nodeWeight", reflect.TypeOf(uint64(0)))
+)
+
+const iterTestNodeCount = 6
+
+func TestWrsIterator(t *testing.T) {
+	ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup)
+	w := NewWrsIterator(ns, sfTest2, sfTest3.Or(sfTest4), sfiTestWeight)
+	ns.Start()
+	for i := 1; i <= iterTestNodeCount; i++ {
+		ns.SetState(testNode(i), sfTest1, nodestate.Flags{}, 0)
+		ns.SetField(testNode(i), sfiTestWeight, uint64(1))
+	}
+	next := func() int {
+		ch := make(chan struct{})
+		go func() {
+			w.Next()
+			close(ch)
+		}()
+		select {
+		case <-ch:
+		case <-time.After(time.Second * 5):
+			t.Fatalf("Iterator.Next() timeout")
+		}
+		node := w.Node()
+		ns.SetState(node, sfTest4, nodestate.Flags{}, 0)
+		return testNodeIndex(node.ID())
+	}
+	set := make(map[int]bool)
+	expset := func() {
+		for len(set) > 0 {
+			n := next()
+			if !set[n] {
+				t.Errorf("Item returned by iterator not in the expected set (got %d)", n)
+			}
+			delete(set, n)
+		}
+	}
+
+	ns.SetState(testNode(1), sfTest2, nodestate.Flags{}, 0)
+	ns.SetState(testNode(2), sfTest2, nodestate.Flags{}, 0)
+	ns.SetState(testNode(3), sfTest2, nodestate.Flags{}, 0)
+	set[1] = true
+	set[2] = true
+	set[3] = true
+	expset()
+	ns.SetState(testNode(4), sfTest2, nodestate.Flags{}, 0)
+	ns.SetState(testNode(5), sfTest2.Or(sfTest3), nodestate.Flags{}, 0)
+	ns.SetState(testNode(6), sfTest2, nodestate.Flags{}, 0)
+	set[4] = true
+	set[6] = true
+	expset()
+	ns.SetField(testNode(2), sfiTestWeight, uint64(0))
+	ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0)
+	ns.SetState(testNode(2), nodestate.Flags{}, sfTest4, 0)
+	ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0)
+	set[1] = true
+	set[3] = true
+	expset()
+	ns.SetField(testNode(2), sfiTestWeight, uint64(1))
+	ns.SetState(testNode(2), nodestate.Flags{}, sfTest2, 0)
+	ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0)
+	ns.SetState(testNode(2), sfTest2, sfTest4, 0)
+	ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0)
+	set[1] = true
+	set[2] = true
+	set[3] = true
+	expset()
+	ns.Stop()
+}