255 lines
6.8 KiB
Go
255 lines
6.8 KiB
Go
// Package task_test 包含对 task 包的单元测试
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package task_test
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import (
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"errors"
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"fmt"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"git.huangwc.com/pig/pig-farm-controller/internal/task"
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"github.com/stretchr/testify/assert"
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)
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// MockTask 用于测试的模拟任务
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type MockTask struct {
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id string
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priority int
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isDone bool
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execute func() error
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executed int32 // 使用原子操作来跟踪执行次数
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}
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// Execute 实现了 Task 接口，并确保每次调用都增加执行计数
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func (m *MockTask) Execute() error {
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// 核心修复：无论 execute 函数是否为 nil，都应增加计数
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atomic.AddInt32(&m.executed, 1)
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if m.execute != nil {
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return m.execute()
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}
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return nil
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}
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func (m *MockTask) GetID() string {
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return m.id
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}
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func (m *MockTask) GetPriority() int {
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return m.priority
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}
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func (m *MockTask) IsDone() bool {
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return m.isDone
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}
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// ExecutedCount 返回任务被执行的次数
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func (m *MockTask) ExecutedCount() int32 {
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return atomic.LoadInt32(&m.executed)
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}
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// TestNewTaskQueue 测试创建新的任务队列
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func TestNewTaskQueue(t *testing.T) {
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tq := task.NewTaskQueue()
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assert.NotNil(t, tq, "新创建的任务队列不应为 nil")
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assert.Equal(t, 0, tq.GetTaskCount(), "新创建的任务队列应为空")
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}
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// TestTaskQueue_AddTask 测试向队列中添加任务
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func TestTaskQueue_AddTask(t *testing.T) {
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tq := task.NewTaskQueue()
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mockTask := &MockTask{id: "task1", priority: 1}
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tq.AddTask(mockTask)
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assert.Equal(t, 1, tq.GetTaskCount(), "添加任务后，队列中的任务数应为 1")
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}
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// TestTaskQueue_GetNextTask 测试从队列中获取任务
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func TestTaskQueue_GetNextTask(t *testing.T) {
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t.Run("从空队列获取任务", func(t *testing.T) {
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tq := task.NewTaskQueue()
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nextTask := tq.GetNextTask()
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assert.Nil(t, nextTask, "从空队列中获取任务应返回 nil")
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})
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t.Run("按优先级获取任务", func(t *testing.T) {
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tq := task.NewTaskQueue()
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task1 := &MockTask{id: "task1", priority: 10}
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task2 := &MockTask{id: "task2", priority: 1} // 优先级更高
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task3 := &MockTask{id: "task3", priority: 5}
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tq.AddTask(task1)
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tq.AddTask(task2)
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tq.AddTask(task3)
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assert.Equal(t, 3, tq.GetTaskCount(), "添加三个任务后，队列中的任务数应为 3")
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nextTask := tq.GetNextTask()
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assert.NotNil(t, nextTask)
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assert.Equal(t, "task2", nextTask.GetID(), "应首先获取优先级最高的任务 (task2)")
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nextTask = tq.GetNextTask()
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assert.NotNil(t, nextTask)
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assert.Equal(t, "task3", nextTask.GetID(), "应获取下一个优先级最高的任务 (task3)")
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nextTask = tq.GetNextTask()
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assert.NotNil(t, nextTask)
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assert.Equal(t, "task1", nextTask.GetID(), "应最后获取优先级最低的任务 (task1)")
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assert.Equal(t, 0, tq.GetTaskCount(), "获取所有任务后，队列应为空")
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})
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}
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// TestTaskQueue_Concurrency 测试任务队列的并发安全性
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func TestTaskQueue_Concurrency(t *testing.T) {
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tq := task.NewTaskQueue()
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var wg sync.WaitGroup
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taskCount := 100
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wg.Add(taskCount)
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for i := 0; i < taskCount; i++ {
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go func(i int) {
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defer wg.Done()
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tq.AddTask(&MockTask{id: fmt.Sprintf("task-%d", i), priority: i})
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}(i)
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}
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wg.Wait()
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assert.Equal(t, taskCount, tq.GetTaskCount(), "并发添加任务后，队列中的任务数应为 %d", taskCount)
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wg.Add(taskCount)
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for i := 0; i < taskCount; i++ {
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go func() {
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defer wg.Done()
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task := tq.GetNextTask()
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assert.NotNil(t, task)
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}()
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}
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wg.Wait()
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assert.Equal(t, 0, tq.GetTaskCount(), "并发获取所有任务后，队列应为空")
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}
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// TestNewExecutor 测试创建新的任务执行器
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func TestNewExecutor(t *testing.T) {
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executor := task.NewExecutor(5)
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assert.NotNil(t, executor, "新创建的执行器不应为 nil")
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}
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// TestExecutor_StartStop 测试执行器的启动和停止
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func TestExecutor_StartStop(t *testing.T) {
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executor := task.NewExecutor(2)
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executor.Start()
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// 没有简单的方法来断言 worker 已启动，但我们可以立即停止它
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// 以确保没有死锁或竞争条件。
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executor.Stop()
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}
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// TestExecutor_SubmitAndExecuteTask 测试提交并执行单个任务 (已重构)
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func TestExecutor_SubmitAndExecuteTask(t *testing.T) {
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executor := task.NewExecutor(1)
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mockTask := &MockTask{
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id: "task1",
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priority: 1,
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// execute 函数可以为空，我们只关心它是否被调用
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execute: nil,
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}
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executor.Start()
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executor.SubmitTask(mockTask)
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// 等待任务执行
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time.Sleep(200 * time.Millisecond)
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executor.Stop()
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assert.Equal(t, int32(1), mockTask.ExecutedCount(), "任务应该已被执行")
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}
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// TestExecutor_ExecuteMultipleTasks 测试执行多个任务 (已重构)
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func TestExecutor_ExecuteMultipleTasks(t *testing.T) {
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executor := task.NewExecutor(3)
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taskCount := 10
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mockTasks := make([]*MockTask, taskCount)
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for i := 0; i < taskCount; i++ {
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mockTasks[i] = &MockTask{
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id: fmt.Sprintf("task-%d", i),
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priority: i,
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}
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}
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executor.Start()
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for _, task := range mockTasks {
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executor.SubmitTask(task)
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}
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// 等待所有任务完成，可以适当增加延时以应对慢速环境
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time.Sleep(500 * time.Millisecond)
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executor.Stop()
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var totalExecuted int32
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for _, task := range mockTasks {
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totalExecuted += task.ExecutedCount()
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}
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assert.Equal(t, int32(taskCount), totalExecuted, "所有提交的任务都应该被执行")
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}
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// TestExecutor_TaskExecutionError 测试任务执行失败的场景 (失败的测试)
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func TestExecutor_TaskExecutionError(t *testing.T) {
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// 日志记录了错误，这里我们只测试执行流程是否继续
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executor := task.NewExecutor(1)
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errorTask := &MockTask{
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id: "errorTask",
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priority: 1,
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execute: func() error {
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return errors.New("执行失败")
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},
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}
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successTask := &MockTask{
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id: "successTask",
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priority: 2, // 后执行
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}
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executor.Start()
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executor.SubmitTask(errorTask)
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executor.SubmitTask(successTask)
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// 等待任务执行
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time.Sleep(300 * time.Millisecond)
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executor.Stop()
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assert.Equal(t, int32(1), errorTask.ExecutedCount(), "失败的任务应该被执行一次")
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assert.Equal(t, int32(1), successTask.ExecutedCount(), "成功的任务也应该被执行")
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}
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// TestExecutor_StopWithPendingTasks 测试停止执行器时仍有待处理任务
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func TestExecutor_StopWithPendingTasks(t *testing.T) {
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executor := task.NewExecutor(1)
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task1 := &MockTask{
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id: "task1",
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priority: 1,
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execute: func() error {
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// 模拟一个耗时任务
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time.Sleep(500 * time.Millisecond)
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return nil
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},
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}
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task2 := &MockTask{id: "task2", priority: 2}
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executor.Start()
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executor.SubmitTask(task1)
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executor.SubmitTask(task2)
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// 给 task1 一点时间启动，然后停止执行器
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time.Sleep(100 * time.Millisecond)
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executor.Stop()
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assert.Equal(t, int32(1), task1.ExecutedCount(), "task1 应该在停止前开始执行")
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assert.Equal(t, int32(0), task2.ExecutedCount(), "task2 不应该被执行，因为执行器已停止")
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}
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