go-pulse/les/vflux/client/wrsiterator_test.go

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// 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()
}