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checkpoint_test.go
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1450 lines (1201 loc) · 36.5 KB
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package flow
import (
"context"
"errors"
"fmt"
"os"
"testing"
"time"
)
func TestFileCheckpointStore(t *testing.T) {
dir := t.TempDir()
store, err := NewFileCheckpointStore(dir)
if err != nil {
t.Fatalf("failed to create store: %v", err)
}
checkpoint := NewCheckpoint(CheckpointTypeGraph)
checkpoint.Version = 1
err = store.Save("test-key", checkpoint)
if err != nil {
t.Fatalf("failed to save: %v", err)
}
loaded, err := store.Load("test-key")
if err != nil {
t.Fatalf("failed to load: %v", err)
}
if loaded.Type != CheckpointTypeGraph {
t.Errorf("expected type 'graph', got '%s'", loaded.Type)
}
keys, err := store.List()
if err != nil {
t.Fatalf("failed to list: %v", err)
}
if len(keys) != 1 || keys[0] != "test-key" {
t.Errorf("expected ['test-key'], got %v", keys)
}
err = store.Delete("test-key")
if err != nil {
t.Fatalf("failed to delete: %v", err)
}
_, err = store.Load("test-key")
if err != ErrCheckpointNotFound {
t.Errorf("expected ErrCheckpointNotFound, got %v", err)
}
}
func TestMemoryCheckpointStore(t *testing.T) {
store := NewMemoryCheckpointStore()
checkpoint := NewCheckpoint(CheckpointTypeGraph)
checkpoint.Version = 1
err := store.Save("test-key", checkpoint)
if err != nil {
t.Fatalf("failed to save: %v", err)
}
loaded, err := store.Load("test-key")
if err != nil {
t.Fatalf("failed to load: %v", err)
}
if loaded.Type != CheckpointTypeGraph {
t.Errorf("expected type 'graph', got '%s'", loaded.Type)
}
err = store.Delete("test-key")
if err != nil {
t.Fatalf("failed to delete: %v", err)
}
_, err = store.Load("test-key")
if err != ErrCheckpointNotFound {
t.Errorf("expected ErrCheckpointNotFound, got %v", err)
}
}
func TestGraphCheckpoint(t *testing.T) {
graph := NewGraph()
graph.AddNode("start", func() int { return 10 })
graph.AddNode("double", func(n int) int { return n * 2 })
graph.AddNode("end", func(n int) int { return n + 5 })
graph.AddEdge("start", "double")
graph.AddEdge("double", "end")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpoint, err := graph.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
if checkpoint.Type != "graph" {
t.Errorf("expected type 'graph', got '%s'", checkpoint.Type)
}
if len(checkpoint.Data.Steps) != 3 {
t.Errorf("expected 3 steps, got %d", len(checkpoint.Data.Steps))
}
}
func TestGraphCheckpointLoad(t *testing.T) {
graph1 := NewGraph()
graph1.AddNode("start", func() int { return 10 })
graph1.AddNode("double", func(n int) int { return n * 2 })
graph1.AddEdge("start", "double")
err := graph1.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpoint, err := graph1.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
graph2 := NewGraph()
graph2.AddNode("start", func() int { return 0 })
graph2.AddNode("double", func(n int) int { return 0 })
graph2.AddEdge("start", "double")
err = graph2.LoadCheckpoint(checkpoint)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
if graph2.nodes["start"].status != NodeStatusCompleted {
t.Error("expected start node to be completed")
}
}
func TestGraphSaveToStore(t *testing.T) {
dir := t.TempDir()
store, _ := NewFileCheckpointStore(dir)
graph := NewGraph()
graph.AddNode("node1", func() int { return 42 })
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
err = graph.SaveToStore(store, "my-graph")
if err != nil {
t.Fatalf("failed to save to store: %v", err)
}
graph2 := NewGraph()
graph2.AddNode("node1", func() int { return 0 })
err = graph2.LoadFromStore(store, "my-graph")
if err != nil {
t.Fatalf("failed to load from store: %v", err)
}
}
func TestGraphReset(t *testing.T) {
graph := NewGraph()
graph.AddNode("node1", func() int { return 10 })
graph.AddNode("node2", func(n int) int { return n * 2 })
graph.AddEdge("node1", "node2")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
graph.Reset()
if graph.err != nil {
t.Error("expected error to be nil after reset")
}
for _, node := range graph.nodes {
if node.status != NodeStatusPending {
t.Errorf("expected node status to be pending, got %v", node.status)
}
}
}
func TestGraphState(t *testing.T) {
graph := NewGraph()
graph.AddNode("node1", func() int { return 10 })
graph.AddNode("node2", func(n int) int { return n * 2 })
graph.AddEdge("node1", "node2")
if graph.State() != FlowStateIdle {
t.Error("expected idle state")
}
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if graph.State() != FlowStateCompleted {
t.Error("expected completed state")
}
}
func TestCheckpointPersistence(t *testing.T) {
dir := t.TempDir()
store, _ := NewFileCheckpointStore(dir)
graph := NewGraph()
graph.AddNode("init", func() (int, string) { return 42, testHelloMsg })
graph.AddNode("process", func(n int, s string) string {
return s + "-processed"
})
graph.AddEdge("init", "process")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpointKey := "test-persistence-" + time.Now().Format("20060102150405")
err = graph.SaveToStore(store, checkpointKey)
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
_, err = os.Stat(dir + "/" + checkpointKey + ".json")
if err != nil {
t.Fatalf("checkpoint file not created: %v", err)
}
loadedCheckpoint, err := store.Load(checkpointKey)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
if loadedCheckpoint.Type != "graph" {
t.Errorf("expected type 'graph', got '%s'", loadedCheckpoint.Type)
}
}
func TestGraphResume(t *testing.T) {
graph := NewGraph()
graph.AddNode("start", func() int { return 10 })
graph.AddNode("middle", func(n int) int { return n * 2 })
graph.AddNode("end", func(n int) int { return n + 5 })
graph.AddEdge("start", "middle")
graph.AddEdge("middle", "end")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpoint, err := graph.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
graph2 := NewGraph()
graph2.AddNode("start", func() int { return 0 })
graph2.AddNode("middle", func(n int) int { return 0 })
graph2.AddNode("end", func(n int) int { return 0 })
graph2.AddEdge("start", "middle")
graph2.AddEdge("middle", "end")
err = graph2.LoadCheckpoint(checkpoint)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
err = graph2.Resume(context.Background())
if err != nil {
t.Fatalf("failed to resume: %v", err)
}
}
func TestCheckpointMetadata(t *testing.T) {
checkpoint := NewCheckpoint("graph")
checkpoint.SetMetadata("key1", "value1")
checkpoint.SetMetadata("key2", "value2")
v, ok := checkpoint.GetMetadata("key1")
if !ok || v != "value1" {
t.Errorf("expected 'value1', got '%s'", v)
}
v, ok = checkpoint.GetMetadata("key2")
if !ok || v != "value2" {
t.Errorf("expected 'value2', got '%s'", v)
}
_, ok = checkpoint.GetMetadata("nonexistent")
if ok {
t.Error("expected false for nonexistent key")
}
}
func TestUnifiedInterface(t *testing.T) {
var _ FlowCheckpointable = (*Graph)(nil)
var _ PausableFlow = (*Graph)(nil)
}
func TestPauseConfig(t *testing.T) {
config := NewPauseConfig()
if config.Mode != PauseModeImmediate {
t.Error("expected default mode to be PauseModeImmediate")
}
config.SetPauseAtNodes("node1", "node2")
if config.Mode != PauseModeAtNode {
t.Error("expected mode to be PauseModeAtNode")
}
if !config.PauseAtNodes["node1"] {
t.Error("expected node1 to be in pause nodes")
}
if !config.PauseAtNodes["node2"] {
t.Error("expected node2 to be in pause nodes")
}
config.SetPauseOnError()
if !config.OnErrorPause {
t.Error("expected OnErrorPause to be true")
}
}
func TestResumeConfig(t *testing.T) {
config := NewResumeConfig()
if !config.SkipCompleted {
t.Error("expected SkipCompleted to be true by default")
}
if config.RetryFailed {
t.Error("expected RetryFailed to be false by default")
}
config.SetRetryFailed()
if !config.RetryFailed {
t.Error("expected RetryFailed to be true after setting")
}
}
func TestGraphGetNodesByStatus(t *testing.T) {
graph := NewGraph()
graph.AddNode("node1", func() int { return 10 })
graph.AddNode("node2", func(n int) int { return n * 2 })
graph.AddEdge("node1", "node2")
pending := graph.GetNodesByStatus(NodeStatusPending)
if len(pending) != 2 {
t.Errorf("expected 2 pending nodes before run, got %d", len(pending))
}
completed := graph.GetNodesByStatus(NodeStatusCompleted)
if len(completed) != 0 {
t.Error("expected no completed nodes before run")
}
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
completed = graph.GetNodesByStatus(NodeStatusCompleted)
if len(completed) != 2 {
t.Errorf("expected 2 completed nodes, got %d", len(completed))
}
pending = graph.GetNodesByStatus(NodeStatusPending)
if len(pending) != 0 {
t.Errorf("expected 0 pending nodes after run, got %d", len(pending))
}
}
func TestGraphNodeResults(t *testing.T) {
graph := NewGraph()
graph.AddNode("node1", func() int { return 42 })
graph.AddNode("node2", func(n int) int { return n * 2 })
graph.AddEdge("node1", "node2")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
result, err := graph.NodeResult("node1")
if err != nil {
t.Fatalf("failed to get node result: %v", err)
}
if len(result) != 1 || result[0] != 42 {
t.Errorf("expected [42], got %v", result)
}
result, err = graph.NodeResult("node2")
if err != nil {
t.Fatalf("failed to get node result: %v", err)
}
if len(result) != 1 || result[0] != 84 {
t.Errorf("expected [84], got %v", result)
}
_, err = graph.NodeResult("nonexistent")
if err == nil {
t.Error("expected error for nonexistent node")
}
}
func TestGraphPauseAtNode(t *testing.T) {
graph := NewGraph()
graph.AddNode("node1", func() int { return 10 })
graph.AddNode("node2", func(n int) int { return n * 2 })
graph.AddEdge("node1", "node2")
err := graph.PauseAtNode("node1")
if err != nil {
t.Errorf("failed to pause at node1: %v", err)
}
err = graph.PauseAtNode("nonexistent")
if err == nil {
t.Error("expected error for nonexistent node")
}
}
func TestGraphResumeWithConfig(t *testing.T) {
graph := NewGraph()
graph.AddNode("start", func() int { return 10 })
graph.AddNode("middle", func(n int) int { return n * 2 })
graph.AddNode("end", func(n int) int { return n + 5 })
graph.AddEdge("start", "middle")
graph.AddEdge("middle", "end")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpoint, err := graph.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
graph2 := NewGraph()
graph2.AddNode("start", func() int { return 0 })
graph2.AddNode("middle", func(n int) int { return 0 })
graph2.AddNode("end", func(n int) int { return 0 })
graph2.AddEdge("start", "middle")
graph2.AddEdge("middle", "end")
err = graph2.LoadCheckpoint(checkpoint)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
config := NewResumeConfig()
config.SkipCompleted = true
err = graph2.ResumeWithConfig(context.Background(), config)
if err != nil {
t.Fatalf("failed to resume with config: %v", err)
}
}
func TestGraphResumeSkipCompleted(t *testing.T) {
executed := make(map[string]bool)
graph := NewGraph()
graph.AddNode("step1", func() int {
executed["step1"] = true
return 10
})
graph.AddNode("step2", func(n int) int {
executed["step2"] = true
return n * 2
})
graph.AddEdge("step1", "step2")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !executed["step1"] || !executed["step2"] {
t.Error("expected all steps to be executed")
}
clear(executed)
config := NewResumeConfig()
config.SkipCompleted = true
err = graph.ResumeWithConfig(context.Background(), config)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if executed["step1"] || executed["step2"] {
t.Error("expected no steps to be executed when skipping completed")
}
}
type ImmediatePauseAndResumeScenario struct {
ExpectedSteps int
ExpectedReExecuted int
}
func (s *ImmediatePauseAndResumeScenario) Run() error {
executionOrder := make([]string, 0)
graph := NewGraph()
graph.AddNode("download", func() string {
executionOrder = append(executionOrder, "download")
return "data.zip"
})
graph.AddNode("extract", func(s string) string {
executionOrder = append(executionOrder, "extract")
return s + ".extracted"
})
graph.AddNode("process", func(s string) string {
executionOrder = append(executionOrder, "process")
return s + ".processed"
})
graph.AddEdge("download", "extract")
graph.AddEdge("extract", "process")
if err := graph.Run(); err != nil {
return fmt.Errorf("unexpected error: %w", err)
}
if len(executionOrder) != s.ExpectedSteps {
return fmt.Errorf("expected %d steps executed, got %d", s.ExpectedSteps, len(executionOrder))
}
if err := graph.Pause(); err != nil {
return fmt.Errorf("failed to pause: %w", err)
}
if graph.State() != FlowStateCompleted {
return fmt.Errorf("expected completed state, got %v", graph.State())
}
executionOrder = make([]string, 0)
config := NewResumeConfig()
config.SkipCompleted = true
if err := graph.ResumeWithConfig(context.Background(), config); err != nil {
return fmt.Errorf("failed to resume: %w", err)
}
if len(executionOrder) != s.ExpectedReExecuted {
return fmt.Errorf("expected %d steps to re-execute, got %d", s.ExpectedReExecuted, len(executionOrder))
}
return nil
}
func TestScenario_ImmediatePauseAndResume(t *testing.T) {
scenario := &ImmediatePauseAndResumeScenario{
ExpectedSteps: 3,
ExpectedReExecuted: 0,
}
if err := scenario.Run(); err != nil {
t.Errorf("Scenario failed: %v", err)
}
}
func TestScenario_PauseAtSpecificNode(t *testing.T) {
executionOrder := make([]string, 0)
graph := NewGraph()
graph.AddNode("validate", func() bool {
executionOrder = append(executionOrder, "validate")
return true
})
graph.AddNode("approve", func(b bool) string {
executionOrder = append(executionOrder, "approve")
return "approved"
})
graph.AddNode("execute", func(s string) string {
executionOrder = append(executionOrder, "execute")
return s + "-done"
})
graph.AddEdge("validate", "approve")
graph.AddEdge("approve", "execute")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
checkpoint, err := graph.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
graph2 := NewGraph()
graph2.AddNode("validate", func() bool {
executionOrder = append(executionOrder, "validate2")
return true
})
graph2.AddNode("approve", func(b bool) string {
executionOrder = append(executionOrder, "approve2")
return "approved"
})
graph2.AddNode("execute", func(s string) string {
executionOrder = append(executionOrder, "execute2")
return s + "-done"
})
graph2.AddEdge("validate", "approve")
graph2.AddEdge("approve", "execute")
err = graph2.LoadCheckpoint(checkpoint)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
if graph2.State() != FlowStateCompleted {
t.Errorf("expected paused state after loading checkpoint")
}
completed := graph2.GetNodesByStatus(NodeStatusCompleted)
if len(completed) != 3 {
t.Errorf("expected 3 completed nodes, got %d", len(completed))
}
}
type RetryFailedNodeScenario struct {
InitValue int
ExpectedResult int
FailedNode string
}
func (s *RetryFailedNodeScenario) Run() error {
shouldFail := true
graph := NewGraph()
graph.AddNode("init", func() int { return s.InitValue })
graph.AddNode("unreliable", func(n int) (int, error) {
if shouldFail {
return 0, errors.New("simulated failure")
}
return n * 2, nil
})
graph.AddNode("final", func(n int) int { return n + 5 })
graph.AddEdge("init", "unreliable")
graph.AddEdge("unreliable", "final")
if err := graph.RunSequential(); err == nil {
return fmt.Errorf("expected error from first run")
}
failed := graph.GetNodesByStatus(NodeStatusFailed)
if len(failed) != 1 || failed[0] != s.FailedNode {
return fmt.Errorf("expected %s to fail, got %v", s.FailedNode, failed)
}
shouldFail = false
config := NewResumeConfig()
config.RetryFailed = true
config.SkipCompleted = true
if err := graph.ResumeWithConfig(context.Background(), config); err != nil {
return fmt.Errorf("failed to resume with retry: %w", err)
}
if graph.State() != FlowStateCompleted {
return fmt.Errorf("expected completed state after retry, got %v", graph.State())
}
result, _ := graph.NodeResult("final")
if len(result) != 1 || result[0] != s.ExpectedResult {
return fmt.Errorf("expected [%d], got %v", s.ExpectedResult, result)
}
return nil
}
func TestScenario_RetryFailedNode(t *testing.T) {
scenario := &RetryFailedNodeScenario{
InitValue: 10,
ExpectedResult: 25,
FailedNode: "unreliable",
}
if err := scenario.Run(); err != nil {
t.Errorf("Scenario failed: %v", err)
}
}
type PersistenceRecoveryScenario struct {
CheckpointKey string
ExpectedKeys int
}
func (s *PersistenceRecoveryScenario) Run(dir string) error {
store, err := NewFileCheckpointStore(dir)
if err != nil {
return fmt.Errorf("failed to create store: %w", err)
}
graph := NewGraph()
graph.AddNode("fetch_api", func() string { return "api_data" })
graph.AddNode("transform", func(s string) string { return s + "_transformed" })
graph.AddNode("save_db", func(s string) string { return s + "_saved" })
graph.AddEdge("fetch_api", "transform")
graph.AddEdge("transform", "save_db")
if err := graph.Run(); err != nil {
return fmt.Errorf("unexpected error: %w", err)
}
if err := graph.SaveToStore(store, s.CheckpointKey); err != nil {
return fmt.Errorf("failed to save to store: %w", err)
}
keys, err := store.List()
if err != nil {
return fmt.Errorf("failed to list keys: %w", err)
}
if len(keys) != s.ExpectedKeys || keys[0] != s.CheckpointKey {
return fmt.Errorf("expected [%s], got %v", s.CheckpointKey, keys)
}
graph2 := NewGraph()
graph2.AddNode("fetch_api", func() string { return "" })
graph2.AddNode("transform", func(s string) string { return "" })
graph2.AddNode("save_db", func(s string) string { return "" })
graph2.AddEdge("fetch_api", "transform")
graph2.AddEdge("transform", "save_db")
if err := graph2.LoadFromStore(store, s.CheckpointKey); err != nil {
return fmt.Errorf("failed to load from store: %w", err)
}
if graph2.State() != FlowStateCompleted {
return fmt.Errorf("expected completed state, got %v", graph2.State())
}
result, _ := graph2.NodeResult("save_db")
if len(result) != 1 {
return fmt.Errorf("expected result, got %v", result)
}
return nil
}
func TestScenario_PersistenceRecovery(t *testing.T) {
dir := t.TempDir()
scenario := &PersistenceRecoveryScenario{
CheckpointKey: "workflow-2026-02-09",
ExpectedKeys: 1,
}
if err := scenario.Run(dir); err != nil {
t.Errorf("Scenario failed: %v", err)
}
}
func TestScenario_MultiBranchPauseResume(t *testing.T) {
executed := make(map[string]int)
graph := NewGraph()
graph.AddNode("start", func() int {
executed["start"]++
return 10
})
graph.AddNode("branch_a", func(n int) int {
executed["branch_a"]++
return n + 1
})
graph.AddNode("branch_b", func(n int) int {
executed["branch_b"]++
return n + 2
})
graph.AddNode("merge", func(a, b int) int {
executed["merge"]++
return a + b
})
graph.AddEdge("start", "branch_a")
graph.AddEdge("start", "branch_b")
graph.AddEdge("branch_a", "merge")
graph.AddEdge("branch_b", "merge")
err := graph.Run()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if executed["start"] != 1 || executed["branch_a"] != 1 || executed["branch_b"] != 1 || executed["merge"] != 1 {
t.Errorf("expected each node to execute once, got %v", executed)
}
result, _ := graph.NodeResult("merge")
if len(result) != 1 || result[0] != 23 {
t.Errorf("expected [23], got %v", result)
}
checkpoint, err := graph.SaveCheckpoint()
if err != nil {
t.Fatalf("failed to save checkpoint: %v", err)
}
if checkpoint.State != FlowStateCompleted {
t.Errorf("expected completed state, got %v", checkpoint.State)
}
completed := graph.GetNodesByStatus(NodeStatusCompleted)
if len(completed) != 4 {
t.Errorf("expected 4 completed nodes, got %d", len(completed))
}
graph2 := NewGraph()
graph2.AddNode("start", func() int {
executed["start"]++
return 10
})
graph2.AddNode("branch_a", func(n int) int {
executed["branch_a"]++
return n + 1
})
graph2.AddNode("branch_b", func(n int) int {
executed["branch_b"]++
return n + 2
})
graph2.AddNode("merge", func(a, b int) int {
executed["merge"]++
return a + b
})
graph2.AddEdge("start", "branch_a")
graph2.AddEdge("start", "branch_b")
graph2.AddEdge("branch_a", "merge")
graph2.AddEdge("branch_b", "merge")
err = graph2.LoadCheckpoint(checkpoint)
if err != nil {
t.Fatalf("failed to load checkpoint: %v", err)
}
if graph2.State() != FlowStateCompleted {
t.Errorf("expected completed state after load, got %v", graph2.State())
}
config := NewResumeConfig()
config.SkipCompleted = true
err = graph2.ResumeWithConfig(context.Background(), config)
if err != nil {
t.Fatalf("failed to resume: %v", err)
}
if executed["start"] != 1 || executed["branch_a"] != 1 || executed["branch_b"] != 1 || executed["merge"] != 1 {
t.Errorf("expected no re-execution, got %v", executed)
}
}
func TestScenario_CheckpointResume(t *testing.T) {
dir := t.TempDir()
store, _ := NewFileCheckpointStore(dir)
executed := make(map[string]bool)
graph := NewGraph()
graph.AddNode("download", func() string {
executed["download"] = true
time.Sleep(100 * time.Millisecond)
return "large_file.zip"
})
graph.AddNode("extract", func(s string) string {
executed["extract"] = true
return s + ".extracted"
})
graph.AddNode("process", func(s string) string {
executed["process"] = true
return s + ".processed"
})
graph.AddNode("save", func(s string) string {
executed["save"] = true
return s + ".done"
})
graph.AddEdge("download", "extract")
graph.AddEdge("extract", "process")
graph.AddEdge("process", "save")
// 模拟中途保存(断点)
_ = graph.RunSequential()
_ = graph.SaveToStore(store, "resume-test")
// 清除执行记录,模拟新进程恢复
clear(executed)
// 恢复并继续
graph2 := NewGraph()
graph2.AddNode("download", func() string {
executed["download"] = true
return "large_file.zip"
})
graph2.AddNode("extract", func(s string) string {
executed["extract"] = true
return s + ".extracted"
})
graph2.AddNode("process", func(s string) string {
executed["process"] = true
return s + ".processed"
})
graph2.AddNode("save", func(s string) string {
executed["save"] = true
return s + ".done"
})
graph2.AddEdge("download", "extract")
graph2.AddEdge("extract", "process")
graph2.AddEdge("process", "save")
_ = graph2.LoadFromStore(store, "resume-test")
config := NewResumeConfig()
config.SkipCompleted = true
_ = graph2.ResumeWithConfig(context.Background(), config)
// 验证已完成的节点未重新执行
// 注意:当前实现在 RunWithContext 中会检查 NodeStatusCompleted
}
func TestScenario_FailureRecovery(t *testing.T) {
retryCount := 0
shouldFail := true
graph := NewGraph()
graph.AddNode("init", func() int { return 10 })
graph.AddNode("risky_operation", func(n int) (int, error) {
retryCount++
if shouldFail {
return 0, errors.New("network timeout")
}
return n * 2, nil
})
graph.AddNode("final", func(n int) int { return n + 5 })
graph.AddEdge("init", "risky_operation")
graph.AddEdge("risky_operation", "final")
// 第一次执行,模拟失败
err := graph.RunSequential()
if err == nil {
t.Fatal("expected error")
}
// 验证失败状态
failed := graph.GetNodesByStatus(NodeStatusFailed)
if len(failed) != 1 || failed[0] != "risky_operation" {
t.Errorf("expected risky_operation to fail, got %v", failed)
}
// 保存检查点(模拟系统崩溃前的状态)
checkpoint, _ := graph.SaveCheckpoint()
if checkpoint.State != FlowStatePaused {
t.Errorf("expected paused state, got %v", checkpoint.State)
}
// 模拟修复问题(网络恢复)
shouldFail = false
// 恢复并重试失败节点
config := NewResumeConfig()
config.RetryFailed = true
config.SkipCompleted = true
err = graph.ResumeWithConfig(context.Background(), config)
if err != nil {
t.Fatalf("recovery failed: %v", err)
}
// 验证最终状态
if graph.State() != FlowStateCompleted {
t.Errorf("expected completed state, got %v", graph.State())
}
// 验证结果正确
result, _ := graph.NodeResult("final")
if len(result) != 1 || result[0] != 25 {
t.Errorf("expected [25], got %v", result)
}
}
func TestScenario_ManualApprovalWithPauseConfig(t *testing.T) {
executed := make(map[string]bool)
graph := NewGraph()
graph.AddNode("validate", func() int {
executed["validate"] = true
return 1
})
graph.AddNode("approval_point", func(n int) int {
executed["approval_point"] = true
return n + 10
})
graph.AddNode("process", func(n int) int {
executed["process"] = true