path: root/common/event_test.go

// Copyright 2018 The dexon-consensus Authors
// This file is part of the dexon-consensus library.
//
// The dexon-consensus 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 dexon-consensus 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 dexon-consensus library. If not, see
// <http://www.gnu.org/licenses/>.

package common

import (
    "math/rand"
    "testing"
    "time"

    "github.com/stretchr/testify/suite"
)

type EventTestSuite struct {
    suite.Suite
}

func (s *EventTestSuite) TestTimeEvent() {
    event := NewEvent()
    now := time.Now()
    triggered := make(chan int, 100)
    trigger := func(id int) func(t time.Time) {
        return func(t time.Time) {
            triggered <- id
        }
    }
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.NotifyTime(now)
    s.Len(triggered, 0)
    event.NotifyTime(now.Add(150 * time.Millisecond))
    s.Len(triggered, 1)
    triggered = make(chan int, 100)
    event.NotifyTime(now.Add(150 * time.Millisecond))
    s.Len(triggered, 0)

    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.NotifyTime(now.Add(150 * time.Millisecond))
    s.Len(triggered, 4)

    triggered = make(chan int, 100)
    for i := 0; i < 10; i++ {
        event.RegisterTime(now.Add(time.Duration(100+i*10)*time.Millisecond),
            trigger(i))
    }
    event.NotifyTime(now.Add(130 * time.Millisecond))
    s.Require().Len(triggered, 4)
    for i := 0; i < 4; i++ {
        j := <-triggered
        s.Equal(i, j)
    }

    event = NewEvent()
    triggered = make(chan int, 100)
    nums := make([]int, 10)
    for i := range nums {
        nums[i] = i
    }
    rand.Shuffle(len(nums), func(i, j int) {
        nums[i], nums[j] = nums[j], nums[i]
    })
    for _, i := range nums {
        event.RegisterTime(now.Add(time.Duration(100+i*10)*time.Millisecond),
            trigger(i))
    }
    event.NotifyTime(now.Add(130 * time.Millisecond))
    s.Require().Len(triggered, 4)
    for i := 0; i < 4; i++ {
        j := <-triggered
        s.Equal(i, j)
    }
}

func (s *EventTestSuite) TestReset() {
    event := NewEvent()
    now := time.Now()
    triggered := make(chan int, 100)
    trigger := func(id int) func(t time.Time) {
        return func(t time.Time) {
            triggered <- id
        }
    }
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.RegisterTime(now.Add(100*time.Millisecond), trigger(0))
    event.Reset()
    event.NotifyTime(now.Add(150 * time.Millisecond))
    s.Len(triggered, 0)
}

func TestEvent(t *testing.T) {
    suite.Run(t, new(EventTestSuite))
}