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127 lines
2.0 KiB
Go
127 lines
2.0 KiB
Go
package service
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import (
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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var (
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number = 1
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mutex sync.Mutex
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done = make(chan struct{})
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)
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type mockedService struct {
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quit chan struct{}
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multiplier int
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}
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func newMockedService(multiplier int) *mockedService {
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return &mockedService{
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quit: make(chan struct{}),
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multiplier: multiplier,
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}
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}
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func (s *mockedService) Start() {
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mutex.Lock()
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number = number * s.multiplier
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mutex.Unlock()
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done <- struct{}{}
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<-s.quit
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}
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func (s *mockedService) Stop() {
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close(s.quit)
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}
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func TestServiceGroup(t *testing.T) {
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multipliers := []int{2, 3, 5, 7}
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want := 1
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group := NewServiceGroup()
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for _, multiplier := range multipliers {
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want *= multiplier
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service := newMockedService(multiplier)
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group.Add(service)
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}
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go group.Start()
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for i := 0; i < len(multipliers); i++ {
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<-done
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}
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group.Stop()
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mutex.Lock()
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defer mutex.Unlock()
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assert.Equal(t, want, number)
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}
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func TestServiceGroup_WithStart(t *testing.T) {
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multipliers := []int{2, 3, 5, 7}
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want := 1
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var wait sync.WaitGroup
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var lock sync.Mutex
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wait.Add(len(multipliers))
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group := NewServiceGroup()
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for _, multiplier := range multipliers {
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var mul = multiplier
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group.Add(WithStart(func() {
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lock.Lock()
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want *= mul
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lock.Unlock()
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wait.Done()
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}))
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}
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go group.Start()
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wait.Wait()
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group.Stop()
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lock.Lock()
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defer lock.Unlock()
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assert.Equal(t, 210, want)
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}
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func TestServiceGroup_WithStarter(t *testing.T) {
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multipliers := []int{2, 3, 5, 7}
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want := 1
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var wait sync.WaitGroup
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var lock sync.Mutex
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wait.Add(len(multipliers))
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group := NewServiceGroup()
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for _, multiplier := range multipliers {
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var mul = multiplier
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group.Add(WithStarter(mockedStarter{
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fn: func() {
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lock.Lock()
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want *= mul
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lock.Unlock()
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wait.Done()
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},
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}))
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}
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go group.Start()
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wait.Wait()
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group.Stop()
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lock.Lock()
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defer lock.Unlock()
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assert.Equal(t, 210, want)
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}
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type mockedStarter struct {
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fn func()
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}
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func (s mockedStarter) Start() {
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s.fn()
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}
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