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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 (
- "testing"
- "time"
- "github.com/ethereum/go-ethereum/common/mclock"
- "github.com/ethereum/go-ethereum/p2p/enode"
- "github.com/ethereum/go-ethereum/p2p/enr"
- "github.com/ethereum/go-ethereum/p2p/nodestate"
- )
- func testNode(i int) *enode.Node {
- return enode.SignNull(new(enr.Record), testNodeID(i))
- }
- func TestQueueIteratorFIFO(t *testing.T) {
- testQueueIterator(t, true)
- }
- func TestQueueIteratorLIFO(t *testing.T) {
- testQueueIterator(t, false)
- }
- func testQueueIterator(t *testing.T, fifo bool) {
- ns := nodestate.NewNodeStateMachine(nil, nil, &mclock.Simulated{}, testSetup)
- qi := NewQueueIterator(ns, sfTest2, sfTest3.Or(sfTest4), fifo, nil)
- ns.Start()
- for i := 1; i <= iterTestNodeCount; i++ {
- ns.SetState(testNode(i), sfTest1, nodestate.Flags{}, 0)
- }
- next := func() int {
- ch := make(chan struct{})
- go func() {
- qi.Next()
- close(ch)
- }()
- select {
- case <-ch:
- case <-time.After(time.Second * 5):
- t.Fatalf("Iterator.Next() timeout")
- }
- node := qi.Node()
- ns.SetState(node, sfTest4, nodestate.Flags{}, 0)
- return testNodeIndex(node.ID())
- }
- exp := func(i int) {
- n := next()
- if n != i {
- t.Errorf("Wrong item returned by iterator (expected %d, got %d)", i, n)
- }
- }
- explist := func(list []int) {
- for i := range list {
- if fifo {
- exp(list[i])
- } else {
- exp(list[len(list)-1-i])
- }
- }
- }
- ns.SetState(testNode(1), sfTest2, nodestate.Flags{}, 0)
- ns.SetState(testNode(2), sfTest2, nodestate.Flags{}, 0)
- ns.SetState(testNode(3), sfTest2, nodestate.Flags{}, 0)
- explist([]int{1, 2, 3})
- ns.SetState(testNode(4), sfTest2, nodestate.Flags{}, 0)
- ns.SetState(testNode(5), sfTest2, nodestate.Flags{}, 0)
- ns.SetState(testNode(6), sfTest2, nodestate.Flags{}, 0)
- ns.SetState(testNode(5), sfTest3, nodestate.Flags{}, 0)
- explist([]int{4, 6})
- ns.SetState(testNode(1), nodestate.Flags{}, sfTest4, 0)
- ns.SetState(testNode(2), nodestate.Flags{}, sfTest4, 0)
- ns.SetState(testNode(3), nodestate.Flags{}, sfTest4, 0)
- ns.SetState(testNode(2), sfTest3, nodestate.Flags{}, 0)
- ns.SetState(testNode(2), nodestate.Flags{}, sfTest3, 0)
- explist([]int{1, 3, 2})
- ns.Stop()
- }
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