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statemachine_test.go
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statemachine_test.go
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package statemachine
import (
"context"
"database/sql"
"errors"
"fmt"
"testing"
"time"
"github.com/DATA-DOG/go-sqlmock"
"go.uber.org/zap"
)
type TestHandler struct {
}
func (handler *TestHandler) GetLogger() *zap.Logger {
return nil
}
func (handler *TestHandler) Name() string {
return "TestHandler" // Provide a default name for the handler
}
func (handler *TestHandler) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "new value1"
data["key3"] = 456
// Return the modified data
return ForwardSuccess, data, nil
}
func (handler *TestHandler) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardSuccess, data, nil
}
func (handler *TestHandler) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *TestHandler) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *TestHandler) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
type TestHandler2 struct {
}
func (handler *TestHandler2) GetLogger() *zap.Logger {
return nil
}
func (handler *TestHandler2) Name() string {
return "TestHandler2" // Provide a default name for the handler
}
func (handler *TestHandler2) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "new value2"
data["key3"] = 457
// Return the modified data
return ForwardSuccess, data, nil
}
func (handler *TestHandler2) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardSuccess, data, nil
}
func (handler *TestHandler2) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *TestHandler2) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *TestHandler2) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
type BackwardTestHandler struct {
}
func (handler *BackwardTestHandler) GetLogger() *zap.Logger {
return nil
}
func (handler *BackwardTestHandler) Name() string {
return "BackwardTestHandler" // Provide a default name for the handler
}
func (handler *BackwardTestHandler) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "some bad state and we need to rollback"
data["key3"] = "changing to some magic value"
// Return the modified data
return ForwardRollback, data, nil
}
func (handler *BackwardTestHandler) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardSuccess, data, nil
}
func (handler *BackwardTestHandler) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *BackwardTestHandler) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *BackwardTestHandler) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
type ForwardRetryTestHandler struct {
}
func (handler *ForwardRetryTestHandler) GetLogger() *zap.Logger {
return nil
}
func (handler *ForwardRetryTestHandler) Name() string {
return "ForwardRetryTestHandler" // Provide a default name for the handler
}
func (handler *ForwardRetryTestHandler) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "some bad state and we need to rollback"
data["key3"] = "changing to some magic value"
// Return the modified data
return ForwardRetry, data, nil
}
func (handler *ForwardRetryTestHandler) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardSuccess, data, nil
}
func (handler *ForwardRetryTestHandler) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *ForwardRetryTestHandler) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *ForwardRetryTestHandler) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
type BackwardRetryTestHandler struct {
}
func (handler *BackwardRetryTestHandler) GetLogger() *zap.Logger {
return nil
}
func (handler *BackwardRetryTestHandler) Name() string {
return "BackwardRetryTestHandler" // Provide a default name for the handler
}
func (handler *BackwardRetryTestHandler) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "some bad state and we need to rollback"
data["key3"] = "changing to some magic value"
return ForwardRollback, data, nil
}
func (handler *BackwardRetryTestHandler) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardRetry, data, nil
}
func (handler *BackwardRetryTestHandler) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *BackwardRetryTestHandler) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *BackwardRetryTestHandler) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
type TestHandlerPause struct {
}
func (handler *TestHandlerPause) GetLogger() *zap.Logger {
return nil
}
func (handler *TestHandlerPause) Name() string {
return "TestHandlerPauseResume" // Provide a default name for the handler
}
func (handler *TestHandlerPause) ExecuteForward(data map[string]interface{}, transitionHistory []TransitionHistory) (ForwardEvent, map[string]interface{}, error) {
// Access and modify arbitrary data in the handler logic
data["key1"] = "new value1"
data["key3"] = 456
// Return the modified data
if len(transitionHistory) == 0 {
return ForwardPause, data, nil
}
return ForwardSuccess, data, nil
}
func (handler *TestHandlerPause) ExecuteBackward(data map[string]interface{}, transitionHistory []TransitionHistory) (BackwardEvent, map[string]interface{}, error) {
return BackwardSuccess, data, nil
}
func (handler *TestHandlerPause) ExecutePause(data map[string]interface{}, transitionHistory []TransitionHistory) (PauseEvent, map[string]interface{}, error) {
return PauseSuccess, data, nil
}
func (handler *TestHandlerPause) ExecuteResume(data map[string]interface{}, transitionHistory []TransitionHistory) (ResumeEvent, map[string]interface{}, error) {
return ResumeSuccess, data, nil
}
func (handler *TestHandlerPause) ExecuteCancel(data map[string]interface{}, transitionHistory []TransitionHistory) (CancelEvent, map[string]interface{}, error) {
return CancelSuccess, data, nil
}
func TestEvent_String(t *testing.T) {
tests := []struct {
event Event
expected string
}{
{OnSuccess, "OnSuccess"},
{OnFailed, "OnFailed"},
{OnAlreadyCompleted, "OnAlreadyCompleted"},
{OnPause, "OnPause"},
{OnResume, "OnResume"},
{OnRollback, "OnRollback"},
{OnRetry, "OnRetry"},
{OnResetTimeout, "OnResetTimeout"},
{OnUnknownSituation, "OnUnknownSituation"},
{OnManualOverride, "OnManualOverride"},
{OnError, "OnError"},
{OnBeforeEvent, "OnBeforeEvent"},
{OnAfterEvent, "OnAfterEvent"},
{OnCompleted, "OnCompleted"},
{OnRollbackCompleted, "OnRollbackCompleted"},
{OnAlreadyRollbackCompleted, "OnAlreadyRollbackCompleted"},
{OnRollbackFailed, "OnRollbackFailed"},
{OnCancelled, "OnCancelled"},
{OnParked, "OnParked"},
{Event(999), "UnknownEvent(999)"},
}
for _, test := range tests {
if result := test.event.String(); result != test.expected {
t.Errorf("Event.String() for %v = %v, want %v", test.event, result, test.expected)
}
}
}
func TestLockType_String(t *testing.T) {
tests := []struct {
lockType LockType
expected string
}{
{NoLock, "NoLock"},
{GlobalLock, "GlobalLock"},
{LocalLock, "LocalLock"},
// Test case for the default scenario
{LockType(999), "UnknownLockType(999)"},
}
for _, test := range tests {
if result := test.lockType.String(); result != test.expected {
t.Errorf("LockType.String() for %v = %v, want %v", test.lockType, result, test.expected)
}
}
}
func TestLoadStateMachineSQL(t *testing.T) {
tableName := "test_table"
expectedSQL := "SELECT * FROM test_table WHERE ID = ?;"
sql := loadStateMachineSQL(tableName)
if sql != expectedSQL {
t.Errorf("Expected %s, got %s", expectedSQL, sql)
}
}
func TestLockStateMachineForTransactionSQL(t *testing.T) {
tableName := "test_table"
expectedSQL := "SELECT ID FROM test_table WHERE ID = ? FOR UPDATE;"
sql := lockStateMachineForTransactionSQL(tableName)
if sql != expectedSQL {
t.Errorf("Expected %s, got %s", expectedSQL, sql)
}
}
func TestLoadAndLockStateMachineSQL(t *testing.T) {
tableName := "test_table"
expectedSQL := "UPDATE test_table SET CurrentState = 'locked', UpdatedTimestamp = NOW() WHERE ID = ?;"
sql := loadAndLockStateMachineSQL(tableName, StateLocked)
if sql != expectedSQL {
t.Errorf("Expected %s, got %s", expectedSQL, sql)
}
}
func TestLoadStateMachine(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
mock.ExpectBegin()
// Set up your expectations
columns := []string{
"ID",
"CurrentState",
"LookupKey",
"ResumeFromStep",
"SaveAfterStep",
"KafkaEventTopic",
"SerializedState",
"CreatedTimestamp",
"UpdatedTimestamp",
"UsesGlobalLock",
"UsesLocalLock",
"UnlockedTimestamp",
"LastRetryTimestamp"}
mock.ExpectQuery("SELECT \\* FROM test_table WHERE ID = \\?").
WithArgs("test_id").
WillReturnRows(sqlmock.NewRows(columns).
AddRow("test_id", "test_state", "test_key", 1, true, "test_topic", "{}", "2021-01-01 00:00:00", "2021-01-01 00:00:00", true, false, nil, nil))
tx, err := db.Begin()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
sm := &StateMachine{Name: "test_table", UniqueID: "test_id", DB: db}
loadedSM, err := loadStateMachine(tx, sm)
if err != nil {
t.Errorf("loadStateMachine() error = %v, wantErr %v", err, false)
}
if loadedSM == nil {
t.Errorf("loadStateMachine() = %v, want non-nil", loadedSM)
}
// Assert that all expectations were met
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
}
func TestLoadAndLockStateMachine(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
sm := &StateMachine{
Name: "test_table",
UniqueID: "test_id",
CurrentState: StateOpen, // Example state, adjust as needed
DB: db,
LookupKey: "test_key",
}
mock.ExpectQuery(escapeRegexChars(checkStateMachineTypeLockSQL())).
WithArgs(sm.Name, sqlmock.AnyArg(), sqlmock.AnyArg()).
WillReturnError(sql.ErrNoRows)
// Begin transaction
mock.ExpectBegin()
// Lock the state machine
lockSQL := "SELECT ID FROM test_table WHERE ID = \\? FOR UPDATE;"
mock.ExpectExec(lockSQL).WithArgs(sm.UniqueID).WillReturnResult(sqlmock.NewResult(0, 0))
columns := []string{
"ID",
"CurrentState",
"LookupKey",
"ResumeFromStep",
"SaveAfterStep",
"KafkaEventTopic",
"SerializedState",
"CreatedTimestamp",
"UpdatedTimestamp",
"UsesGlobalLock",
"UsesLocalLock",
"UnlockedTimestamp",
"LastRetryTimestamp"}
mock.ExpectQuery("SELECT \\* FROM test_table WHERE ID = \\?").
WithArgs("test_id").
WillReturnRows(sqlmock.NewRows(columns).
AddRow("test_id", "test_state", "test_key", 1, true, "test_topic", "{}", "2021-01-01 00:00:00", "2021-01-01 00:00:00", true, false, nil, nil))
// Update the state machine
updateSQL := "UPDATE test_table SET CurrentState = 'locked', UpdatedTimestamp = NOW\\(\\) WHERE ID = \\?"
mock.ExpectExec(updateSQL).WithArgs(sm.UniqueID).WillReturnResult(sqlmock.NewResult(1, 1))
// Commit transaction
mock.ExpectCommit()
loadedSM, err := loadAndLockStateMachine(sm)
if err != nil {
t.Errorf("loadAndLockStateMachine() error = %v, wantErr %v", err, false)
}
if loadedSM == nil {
t.Errorf("loadAndLockStateMachine() = %v, want non-nil", loadedSM)
}
// Assert that all expectations were met
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
}
func TestStateMachine_determineNewState(t *testing.T) {
tests := []struct {
name string
currentState State
event Event
expectedState State
expectedRetry bool
}{
{"OnSuccess from StatePending", StatePending, OnSuccess, StateOpen, false},
{"OnFailed from StatePending", StatePending, OnFailed, StateFailed, false},
{"OnCancelled from StatePending", StatePending, OnCancelled, StateCancelled, false},
{"OnUnknownSituation from StatePending", StatePending, OnUnknownSituation, StateParked, false},
{"OnSuccess from StateOpen", StateOpen, OnSuccess, StateOpen, false},
{"OnCompleted from StateOpen", StateOpen, OnCompleted, StateCompleted, false},
{"OnFailed from StateOpen", StateOpen, OnFailed, StateFailed, false},
{"OnPause from StateOpen", StateOpen, OnPause, StatePaused, false},
{"OnRollback from StateOpen", StateOpen, OnRollback, StateStartRollback, false},
{"OnRetry from StateOpen", StateOpen, OnRetry, StateStartRetry, true},
{"OnLock from StateOpen", StateOpen, OnLock, StateLocked, false},
{"OnCancelled from StateOpen", StateOpen, OnCancelled, StateCancelled, false},
{"OnUnknownSituation from StateOpen", StateOpen, OnUnknownSituation, StateParked, false},
{"OnSuccess from StateRetry", StateRetry, OnSuccess, StateOpen, false},
{"OnFailed from StateRetry", StateRetry, OnFailed, StateFailed, false},
{"OnRetry from StateRetry", StateRetry, OnRetry, StateRetry, true},
{"OnLock from StateRetry", StateRetry, OnLock, StateLocked, false},
{"OnCancelled from StateRetry", StateRetry, OnCancelled, StateCancelled, false},
{"OnResetTimeout from StateRetry", StateRetry, OnResetTimeout, StateFailed, false},
{"OnUnknownSituation from StateRetry", StateRetry, OnUnknownSituation, StateParked, false},
{"OnSuccess from StateRollback", StateRollback, OnSuccess, StateOpen, false},
{"OnRollbackCompleted from StateRollback", StateRollback, OnRollbackCompleted, StateRollbackCompleted, false},
{"OnRollbackFailed from StateRollback", StateRollback, OnRollbackFailed, StateRollbackFailed, false},
{"OnRollback from StateRollback", StateRollback, OnRollback, StateRollback, false},
{"OnCancelled from StateRollback", StateRollback, OnCancelled, StateCancelled, false},
{"OnUnknownSituation from StateRollback", StateRollback, OnUnknownSituation, StateParked, false},
{"OnResume from StatePaused", StatePaused, OnResume, StateOpen, false},
{"OnManualOverride from StateParked", StateParked, OnManualOverride, AnyState, false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
sm := &StateMachine{CurrentState: tt.currentState}
newState, shouldRetry, err := sm.determineNewState(&Context{}, tt.event)
if err != nil {
t.Errorf("determineNewState() error = %v, wantErr %v", err, false)
}
if newState != tt.expectedState && tt.expectedState != AnyState {
t.Errorf("determineNewState() newState = %v, want %v", newState, tt.expectedState)
}
if newState == AnyState && tt.event != OnManualOverride {
t.Errorf("determineNewState() newState = %v, want %v. OnManualOverride is the only thing that should return AnyState", newState, OnManualOverride)
}
if tt.event == OnManualOverride && tt.currentState != StateParked {
t.Errorf("determineNewState() newState = %v, want %v. OnManualOverride should only be valid from StateParked", newState, StateParked)
}
if shouldRetry != tt.expectedRetry {
t.Errorf("determineNewState() shouldRetry = %v, want %v", shouldRetry, tt.expectedRetry)
}
})
}
}
func TestLoadStateMachineFromDB(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
stateMachineType := "test_table"
id := "test_id"
mock.ExpectQuery(escapeRegexChars(checkStateMachineTypeLockSQL())).
WithArgs(stateMachineType, sqlmock.AnyArg(), sqlmock.AnyArg()).
WillReturnError(sql.ErrNoRows)
// Set up mock expectations for loadAndLockStateMachine
// Begin transaction
mock.ExpectBegin()
// Lock the state machine
lockSQL := "SELECT ID FROM .* WHERE ID = \\? FOR UPDATE;"
mock.ExpectExec(lockSQL).WithArgs(id).WillReturnResult(sqlmock.NewResult(0, 0))
columns := []string{
"ID",
"CurrentState",
"LookupKey",
"ResumeFromStep",
"SaveAfterStep",
"KafkaEventTopic",
"SerializedState",
"CreatedTimestamp",
"UpdatedTimestamp",
"UsesGlobalLock",
"UsesLocalLock",
"UnlockedTimestamp",
"LastRetryTimestamp"}
mock.ExpectQuery("SELECT \\* FROM test_table WHERE ID = \\?").
WithArgs("test_id").
WillReturnRows(sqlmock.NewRows(columns).
AddRow("test_id", "test_state", "test_key", 1, true, "test_topic", "{}", "2021-01-01 00:00:00", "2021-01-01 00:00:00", true, false, nil, nil))
// Update the state machine
updateSQL := "UPDATE .* SET CurrentState = 'locked', UpdatedTimestamp = NOW\\(\\) WHERE ID = \\?"
mock.ExpectExec(updateSQL).WithArgs(id).WillReturnResult(sqlmock.NewResult(1, 1))
// Commit transaction
mock.ExpectCommit()
// Call the function
loadedSM, err := loadStateMachineFromDB(stateMachineType, id, db)
if err != nil {
t.Errorf("loadStateMachineFromDB() error = %v, wantErr %v", err, false)
}
if loadedSM == nil {
t.Errorf("loadStateMachineFromDB() = %v, want non-nil", loadedSM)
}
// Assert that all expectations were met
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
}
func TestStateMachine_executeLeaveStateCallback(t *testing.T) {
sm := &StateMachine{
CurrentState: StateOpen,
Callbacks: map[string]StateCallbacks{
"open": {
AfterTheStep: func(sm *StateMachine, ctx *Context) error {
// Mock callback logic
return nil
},
},
},
}
context := &Context{} // Mock context as needed
err := sm.executeLeaveStateCallback(context)
if err != nil {
t.Errorf("executeLeaveStateCallback() error = %v, wantErr %v", err, false)
}
}
func TestStateMachine_CalculateNextRetryDelay(t *testing.T) {
tests := []struct {
name string
retryCount int
baseDelay time.Duration
maxTimeout time.Duration
expectedDelay time.Duration
}{
{
name: "First retry",
retryCount: 0,
baseDelay: 1 * time.Second,
maxTimeout: 60 * time.Second,
expectedDelay: 2 * time.Second,
},
{
name: "Second retry",
retryCount: 1,
baseDelay: 1 * time.Second,
maxTimeout: 60 * time.Second,
expectedDelay: 4 * time.Second,
},
{
name: "Exceeds max timeout",
retryCount: 10,
baseDelay: 1 * time.Second,
maxTimeout: 10 * time.Second,
expectedDelay: 2048 * time.Second,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
sm := &StateMachine{
RetryCount: tt.retryCount,
BaseDelay: tt.baseDelay,
MaxTimeout: tt.maxTimeout,
}
got := sm.CalculateNextRetryDelay()
if got != tt.expectedDelay {
t.Errorf("CalculateNextRetryDelay() = %v, want %v", got, tt.expectedDelay)
}
})
}
}
func TestStateMachine_GetRemainingDelay(t *testing.T) {
now := time.Now()
twentySecondsAgo := now.Add(-60 * time.Second)
tests := []struct {
name string
lastRetry *time.Time
retryCount int
baseDelay time.Duration
expectedDelay time.Duration
maxDelay time.Duration
}{
{
name: "LastRetry is nil",
lastRetry: nil,
expectedDelay: 0,
maxDelay: 60 * time.Second,
},
{
name: "Next retry time in the future",
lastRetry: &now,
retryCount: 1,
baseDelay: 10 * time.Second,
expectedDelay: 40 * time.Second,
maxDelay: 60 * time.Second,
},
{
name: "Next retry time in the past",
lastRetry: &twentySecondsAgo,
retryCount: 1,
baseDelay: 10 * time.Second,
expectedDelay: 0,
maxDelay: 60 * time.Second,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
sm := &StateMachine{
LastRetry: tt.lastRetry,
BaseDelay: tt.baseDelay,
RetryCount: tt.retryCount,
MaxTimeout: tt.maxDelay,
}
got := sm.GetRemainingDelay()
// Allow a small margin of error for time calculations
if got < tt.expectedDelay-time.Second || got > tt.expectedDelay+time.Second {
t.Errorf("GetRemainingDelay() = %v, want %v", got, tt.expectedDelay)
}
})
}
}
func TestIsTerminalState(t *testing.T) {
tests := []struct {
state State
expected bool
}{
{StateCompleted, true},
{StateFailed, true},
{StateOpen, false},
// Add more test cases for different states
}
for _, test := range tests {
result := IsTerminalState(test.state)
if result != test.expected {
t.Errorf("IsTerminalState(%s) = %v; want %v", test.state, result, test.expected)
}
}
}
func TestIsValidTransition(t *testing.T) {
for currentState, events := range ValidTransitions {
for event, validNextStates := range events {
for _, validNextState := range validNextStates {
t.Run(fmt.Sprintf("Valid: %s + %s -> %s", currentState, event, validNextState), func(t *testing.T) {
if !IsValidTransition(currentState, event, validNextState) {
t.Errorf("IsValidTransition(%s, %s, %s) = false; want true", currentState, event, validNextState)
}
})
}
}
}
// Test for an invalid transition
t.Run("Invalid transition", func(t *testing.T) {
invalidTransition := IsValidTransition(StateOpen, OnSuccess, StateFailed) // Assuming this is an invalid transition
if invalidTransition {
t.Errorf("IsValidTransition(StateOpen, OnSuccess, StateFailed) = true; want false")
}
})
}
func TestStateMachine_Forward_Global_Lock_Run_Integration(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
testHandler := &TestHandler{}
testHandler2 := &TestHandler2{}
// Initialize StateMachine with necessary configuration
config := StateMachineConfig{
Name: "testing",
UniqueStateMachineID: "test1",
LookupKey: "5",
DB: db,
//Handlers: []BaseStepHandler{&TestHandler{}, &TestHandler2{}},
Handlers: []StepHandler{NewStep(testHandler.Name(), zap.NewNop(), testHandler.ExecuteForward, testHandler.ExecuteBackward, testHandler.ExecutePause, testHandler.ExecuteResume), NewStep(testHandler2.Name(), zap.NewNop(), testHandler2.ExecuteForward, testHandler2.ExecuteBackward, testHandler2.ExecutePause, testHandler2.ExecuteResume)},
ExecuteSynchronously: true,
RetryPolicy: RetryPolicy{
MaxTimeout: 10 * time.Second,
BaseDelay: 1 * time.Second,
RetryType: ExponentialBackoff,
},
LockType: GlobalLock,
}
// Set up expectations for CreateGlobalLockTableIfNotExists
createTableSQL := escapeRegexChars(`CREATE TABLE IF NOT EXISTS GLOBAL_LOCK (
ID INT NOT NULL AUTO_INCREMENT,
StateMachineType VARCHAR(255),
StateMachineID VARCHAR(255),
LookupKey VARCHAR(255),
LockTimestamp TIMESTAMP,
UnlockTimestamp TIMESTAMP NULL,
PRIMARY KEY (ID),
INDEX (StateMachineType),
INDEX (LookupKey),
INDEX (UnlockTimestamp)
);`)
mock.ExpectExec(createTableSQL).WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectExec(escapeRegexChars(createStateMachineTableIfNotExistsSQL(config.Name))).
WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectExec(escapeRegexChars(createStateMachineLockTableIfNotExistsSQL())).
WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectQuery(escapeRegexChars(checkStateMachineTypeLockSQL())).
WithArgs(config.Name, sqlmock.AnyArg(), sqlmock.AnyArg()).
WillReturnError(sql.ErrNoRows)
var usesGlobalLock, usesLocalLock bool
if config.LockType == GlobalLock {
usesGlobalLock = true
}
if config.LockType == LocalLock {
usesLocalLock = true
}
mock.ExpectExec(escapeRegexChars(insertStateMachineSQL(config.Name))).WithArgs(
config.UniqueStateMachineID,
StatePending,
config.LookupKey,
0,
true,
config.KafkaEventTopic,
sqlmock.AnyArg(),
sqlmock.AnyArg(),
sqlmock.AnyArg(),
nil,
nil,
usesGlobalLock,
usesLocalLock).WillReturnResult(sqlmock.NewResult(1, 1))
// Obtain the local lock with a global lock
mock.ExpectBegin()
mock.ExpectQuery(escapeRegexChars(checkGlobalLockExistsSQL())).WithArgs(config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(isGlobalLockOwnedByThisInstanceSQL())).WithArgs(config.Name, config.UniqueStateMachineID, config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectRollback()
// Update after Handler 1
mock.ExpectBegin()
mock.ExpectExec(escapeRegexChars(updateStateMachineStateSQL(config.Name))).WithArgs(StateOpen, sqlmock.AnyArg(), 1, sqlmock.AnyArg(), config.UniqueStateMachineID).WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
// Obtain the local lock with a global lock
mock.ExpectBegin()
mock.ExpectQuery(escapeRegexChars(checkGlobalLockExistsSQL())).WithArgs(config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(isGlobalLockOwnedByThisInstanceSQL())).WithArgs(config.Name, config.UniqueStateMachineID, config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectRollback()
// Update after Handler 2
mock.ExpectBegin()
mock.ExpectExec(escapeRegexChars(updateStateMachineStateSQL(config.Name))).WithArgs(StateOpen, sqlmock.AnyArg(), 2, sqlmock.AnyArg(), config.UniqueStateMachineID).WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
// Obtain the local lock with a global lock
mock.ExpectBegin()
mock.ExpectQuery(escapeRegexChars(checkGlobalLockExistsSQL())).WithArgs(config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(isGlobalLockOwnedByThisInstanceSQL())).WithArgs(config.Name, config.UniqueStateMachineID, config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectRollback()
// Update to record the completion of the state machine
mock.ExpectBegin()
mock.ExpectExec(escapeRegexChars(updateStateMachineStateSQL(config.Name))).WithArgs(StateCompleted, sqlmock.AnyArg(), 2, sqlmock.AnyArg(), config.UniqueStateMachineID).WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
sm, err := NewStateMachine(config)
if err != nil {
t.Fatalf("error creating StateMachine: %v", err)
}
// Execute the Run method
err = sm.Run()
if err != nil {
t.Errorf("Run() resulted in an error: %v", err)
}
// Assert that all expectations were met
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
if sm.CurrentState != StateCompleted {
t.Errorf("Run() did not result in a completed state machine")
}
if sm.LastRetry != nil {
t.Errorf("Run() should not have set LastRetry")
}
if sm.ResumeFromStep != 2 {
t.Errorf("Run() should have set ResumeFromStep to 2")
}
}
func TestStateMachine_Forward_Run_Context_Cancelled_Integration(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
context, cancel := context.WithCancel(context.Background())
testHandler := &TestHandler{}
testHandler2 := &TestHandler2{}
// Initialize StateMachine with necessary configuration
config := StateMachineConfig{
Name: "testing",
UniqueStateMachineID: "test1",
LookupKey: "5",
DB: db,
//Handlers: []StepHandler{&TestHandler{}, &TestHandler2{}},
Handlers: []StepHandler{NewStep(testHandler.Name(), zap.NewNop(), testHandler.ExecuteForward, testHandler.ExecuteBackward, testHandler.ExecutePause, testHandler.ExecuteResume), NewStep(testHandler2.Name(), zap.NewNop(), testHandler2.ExecuteForward, testHandler2.ExecuteBackward, testHandler2.ExecutePause, testHandler2.ExecuteResume)},
ExecuteSynchronously: true,
RetryPolicy: RetryPolicy{
MaxTimeout: 10 * time.Second,
BaseDelay: 1 * time.Second,
RetryType: ExponentialBackoff,
},
LockType: LocalLock,
Context: context,
}
// Set up expectations for CreateGlobalLockTableIfNotExists
createTableSQL := escapeRegexChars(`CREATE TABLE IF NOT EXISTS GLOBAL_LOCK (
ID INT NOT NULL AUTO_INCREMENT,
StateMachineType VARCHAR(255),
StateMachineID VARCHAR(255),
LookupKey VARCHAR(255),
LockTimestamp TIMESTAMP,
UnlockTimestamp TIMESTAMP NULL,
PRIMARY KEY (ID),
INDEX (StateMachineType),
INDEX (LookupKey),
INDEX (UnlockTimestamp)
);`)
mock.ExpectExec(createTableSQL).WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectExec(escapeRegexChars(createStateMachineTableIfNotExistsSQL(config.Name))).WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectExec(escapeRegexChars(createStateMachineLockTableIfNotExistsSQL())).
WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectQuery(escapeRegexChars(checkStateMachineTypeLockSQL())).
WithArgs(config.Name, sqlmock.AnyArg(), sqlmock.AnyArg()).
WillReturnError(sql.ErrNoRows)
var usesGlobalLock, usesLocalLock bool
if config.LockType == GlobalLock {
usesGlobalLock = true
}
if config.LockType == LocalLock {
usesLocalLock = true
}
mock.ExpectExec(escapeRegexChars(insertStateMachineSQL(config.Name))).WithArgs(
config.UniqueStateMachineID,
StatePending,
config.LookupKey,
0,
true,
config.KafkaEventTopic,
sqlmock.AnyArg(),
sqlmock.AnyArg(),
sqlmock.AnyArg(),
nil,
nil,
usesGlobalLock,
usesLocalLock).WillReturnResult(sqlmock.NewResult(1, 1))
// Obtain the local lock with a global lock
mock.ExpectBegin()
mock.ExpectQuery(escapeRegexChars(checkGlobalLockExistsSQL())).WithArgs(config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(isGlobalLockOwnedByThisInstanceSQL())).WithArgs(config.Name, config.UniqueStateMachineID, config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(checkLocalLockExistsSQL(config.Name))).WithArgs(config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectQuery(escapeRegexChars(isLocalLockOwnedByThisInstanceSQL(config.Name))).WithArgs(config.UniqueStateMachineID, config.LookupKey).WillReturnRows(sqlmock.NewRows([]string{"ID"}).AddRow(1))
mock.ExpectRollback()
// Update after Handler 1
mock.ExpectBegin()
mock.ExpectExec(escapeRegexChars(updateStateMachineStateSQL(config.Name))).WithArgs(StateOpen, sqlmock.AnyArg(), 1, sqlmock.AnyArg(), config.UniqueStateMachineID).WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
// Update after Handler 2
mock.ExpectBegin()
mock.ExpectExec(escapeRegexChars(updateStateMachineStateSQL(config.Name))).WithArgs(StateCancelled, sqlmock.AnyArg(), 1, sqlmock.AnyArg(), config.UniqueStateMachineID).WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
sm, err := NewStateMachine(config)
if err != nil {
t.Fatalf("error creating StateMachine: %v", err)
}
leaveStateCallback := func(sm *StateMachine, ctx *Context) error {
cancel()
return nil
}
sm.AddStateCallbacks(StatePending, StateCallbacks{
AfterTheStep: leaveStateCallback,
})
// Execute the Run method
err = sm.Run()
if err != nil {
t.Errorf("Run() didn't result in an error: %v", err)
}
// Assert that all expectations were met
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
if sm.CurrentState != StateCancelled {
t.Errorf("Run() did not result in a cancelled state machine")
}
if sm.LastRetry != nil {
t.Errorf("Run() should not have set LastRetry")
}
if sm.ResumeFromStep != 1 {
t.Errorf("Run() should have set ResumeFromStep to 1")
}
}
func TestStateMachine_Forward_Run_Integration(t *testing.T) {
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
testHandler := &TestHandler{}
testHandler2 := &TestHandler2{}
// Initialize StateMachine with necessary configuration