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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()
- }
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