246 lines
9.9 KiB
Go
246 lines
9.9 KiB
Go
package dbmigration
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import (
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"context"
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"database/sql"
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"encoding/json"
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"errors"
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"os"
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"path/filepath"
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"runtime"
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"testing"
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"git.pcux.cn/xuans/Smail/config"
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_ "modernc.org/sqlite"
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)
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func newSQLiteMigrationFixture(t *testing.T, switchConfig SQLiteSwitch) (*Service, string) {
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t.Helper()
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root := t.TempDir()
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configDirectory := filepath.Join(root, "config")
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if err := os.Mkdir(configDirectory, 0700); err != nil {
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t.Fatal(err)
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}
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sourcePath := filepath.Join(configDirectory, "smail.db")
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database, err := sql.Open("sqlite", sourcePath)
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if err != nil {
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t.Fatal(err)
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}
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if _, err := database.Exec(`CREATE TABLE messages (id INTEGER PRIMARY KEY, body TEXT NOT NULL); INSERT INTO messages(body) VALUES ('测试邮件');`); err != nil {
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database.Close()
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t.Fatal(err)
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}
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if err := database.Close(); err != nil {
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t.Fatal(err)
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}
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executor := NewSQLiteExecutor(root, switchConfig)
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return NewService(executor), root
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}
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func TestSQLiteExecutorCopiesDatabaseAndSwitchesConfiguration(t *testing.T) {
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var switched config.DatabaseConfig
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service, root := newSQLiteMigrationFixture(t, func(_ context.Context, candidate config.DatabaseConfig) error {
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switched = candidate
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return nil
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})
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 3, "smail-next.db")
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if err != nil {
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t.Fatal(err)
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}
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completed, err := service.Execute(context.Background(), record.ID, token)
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if err != nil {
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t.Fatal(err)
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}
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if completed.Status != StatusSucceeded {
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t.Fatalf("migration status = %s, want succeeded", completed.Status)
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}
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if switched.LocalRef != "smail-next.db" || switched.Type != config.DatabaseTypeSQLite {
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t.Fatalf("unexpected switched configuration: %+v", switched)
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}
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database, err := sql.Open("sqlite", filepath.Join(root, "config", "smail-next.db"))
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if err != nil {
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t.Fatal(err)
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}
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defer database.Close()
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var body string
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if err := database.QueryRow("SELECT body FROM messages WHERE id = 1").Scan(&body); err != nil {
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t.Fatal(err)
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}
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if body != "测试邮件" {
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t.Fatalf("copied row = %q, want copied content", body)
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}
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info, err := os.Stat(filepath.Join(root, "config", "smail-next.db"))
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if err != nil {
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t.Fatal(err)
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}
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if runtime.GOOS != "windows" && info.Mode().Perm() != 0600 {
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t.Fatalf("migrated database permissions = %o, want 600", info.Mode().Perm())
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}
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}
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func TestSQLiteExecutorRejectsExistingTarget(t *testing.T) {
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service, root := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error { return nil })
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if err := os.WriteFile(filepath.Join(root, "config", "smail-next.db"), []byte("existing"), 0600); err != nil {
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t.Fatal(err)
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}
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "smail-next.db")
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if err != nil {
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t.Fatal(err)
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}
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failed, err := service.Execute(context.Background(), record.ID, token)
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if !errors.Is(err, ErrTargetExists) {
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t.Fatalf("execution error = %v, want target exists", err)
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}
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if failed.Status != StatusFailed || failed.ErrorCode != "TARGET_EXISTS" {
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t.Fatalf("unexpected failed migration: %+v", failed)
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}
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}
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func TestSQLiteExecutorRejectsCorruptSource(t *testing.T) {
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root := t.TempDir()
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if err := os.Mkdir(filepath.Join(root, "config"), 0700); err != nil {
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t.Fatal(err)
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}
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if err := os.WriteFile(filepath.Join(root, "config", "smail.db"), []byte("not sqlite"), 0600); err != nil {
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t.Fatal(err)
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}
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executor := NewSQLiteExecutor(root, func(context.Context, config.DatabaseConfig) error { return nil })
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plan := Plan{sourceConfig: config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, targetConfig: config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "next.db"}}
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if err := executor.Run(context.Background(), plan, func(Status) error { return nil }); err == nil {
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t.Fatal("corrupt source unexpectedly migrated")
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} else if !errors.Is(err, ErrSQLiteIntegrity) {
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t.Fatalf("corrupt source error = %v, want integrity error", err)
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}
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}
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func TestSQLiteExecutorRejectsUnsupportedDatabase(t *testing.T) {
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executor := NewSQLiteExecutor(t.TempDir(), func(context.Context, config.DatabaseConfig) error { return nil })
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plan := Plan{sourceConfig: config.DatabaseConfig{Type: config.DatabaseTypeMySQL}, targetConfig: config.DatabaseConfig{Type: config.DatabaseTypeMySQL}}
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if err := executor.Run(context.Background(), plan, func(Status) error { return nil }); !errors.Is(err, ErrUnsupportedDatabase) {
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t.Fatalf("unsupported database error = %v", err)
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}
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}
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func TestSQLiteExecutorRequiresConfigurationSwitch(t *testing.T) {
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service, root := newSQLiteMigrationFixture(t, nil)
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "next.db")
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if err != nil {
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t.Fatal(err)
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}
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failed, err := service.Execute(context.Background(), record.ID, token)
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if !errors.Is(err, ErrSwitchUnavailable) {
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t.Fatalf("execution error = %v, want switch unavailable", err)
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}
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if failed.ErrorCode != "SWITCH_UNAVAILABLE" {
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t.Fatalf("error code = %q, want SWITCH_UNAVAILABLE", failed.ErrorCode)
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}
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if _, err := os.Stat(filepath.Join(root, "config", "next.db")); !errors.Is(err, os.ErrNotExist) {
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t.Fatalf("target database remained after switch failure, stat error = %v", err)
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}
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}
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func TestSQLiteExecutorCleansTargetForKnownConfigurationSwitchRejection(t *testing.T) {
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service, root := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error {
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return config.ErrGenerationConflict
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})
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "known-rejection.db")
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if err != nil {
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t.Fatal(err)
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}
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failed, err := service.Execute(context.Background(), record.ID, token)
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if !errors.Is(err, config.ErrGenerationConflict) || errors.Is(err, ErrSwitchOutcomeUnknown) {
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t.Fatalf("known switch rejection = %v, record = %+v", err, failed)
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}
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if _, statErr := os.Stat(filepath.Join(root, "config", "known-rejection.db")); !errors.Is(statErr, os.ErrNotExist) {
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t.Fatalf("target database remained after known switch rejection, stat error = %v", statErr)
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}
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}
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func TestSQLiteExecutorPreservesTargetWhenConfigurationSwitchOutcomeIsUnknown(t *testing.T) {
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service, root := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error {
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return errors.New("配置切换失败")
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})
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "next.db")
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if err != nil {
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t.Fatal(err)
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}
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failed, err := service.Execute(context.Background(), record.ID, token)
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if err == nil || failed.Status != StatusFailed {
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t.Fatalf("switch failure result = %+v, error = %v", failed, err)
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}
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if !errors.Is(err, ErrSwitchOutcomeUnknown) {
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t.Fatalf("switch failure error = %v, want unknown switch outcome", err)
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}
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if _, statErr := os.Stat(filepath.Join(root, "config", "next.db")); statErr != nil {
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t.Fatalf("target database was removed after unknown switch outcome: %v", statErr)
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}
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}
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func TestSQLiteExecutorRejectsTargetSymlink(t *testing.T) {
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if runtime.GOOS == "windows" {
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t.Skip("Windows 创建符号链接需要额外权限")
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}
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service, root := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error { return nil })
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target := filepath.Join(root, "config", "next.db")
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if err := os.Symlink(filepath.Join(root, "config", "smail.db"), target); err != nil {
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t.Fatal(err)
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}
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "next.db")
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if err != nil {
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t.Fatal(err)
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}
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failed, err := service.Execute(context.Background(), record.ID, token)
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if !errors.Is(err, ErrTargetExists) || failed.Status != StatusFailed {
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t.Fatalf("symlink target result = %+v, error = %v", failed, err)
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}
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}
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func TestSQLiteExecutorHonorsCancellation(t *testing.T) {
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service, _ := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error { return nil })
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record, token, err := service.Preview(context.Background(), config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, 1, "next.db")
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if err != nil {
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t.Fatal(err)
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}
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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failed, err := service.Execute(ctx, record.ID, token)
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if !errors.Is(err, context.Canceled) {
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t.Fatalf("execution error = %v, want context canceled", err)
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}
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if failed.Status != StatusFailed {
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t.Fatalf("migration status = %s, want failed", failed.Status)
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}
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}
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func TestMigrationPlanDoesNotSerializePrivateDatabaseConfig(t *testing.T) {
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plan := Plan{Source: DatabaseIdentity{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}, Target: DatabaseIdentity{Type: config.DatabaseTypeSQLite, LocalRef: "next.db"}, sourceConfig: config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"}}
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data, err := json.Marshal(plan)
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if err != nil {
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t.Fatal(err)
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}
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if string(data) != `{"Source":{"type":"sqlite","localRef":"smail.db"},"Target":{"type":"sqlite","localRef":"next.db"}}` {
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t.Fatalf("serialized plan = %s", data)
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}
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}
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func TestSQLiteExecutorReportsOrderedStatuses(t *testing.T) {
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service, root := newSQLiteMigrationFixture(t, func(context.Context, config.DatabaseConfig) error { return nil })
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executor := service.runner.(*SQLiteExecutor)
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statuses := make([]Status, 0, 2)
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plan := Plan{
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sourceConfig: config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "smail.db"},
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targetConfig: config.DatabaseConfig{Type: config.DatabaseTypeSQLite, LocalRef: "next.db"},
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}
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if err := executor.Run(context.Background(), plan, func(status Status) error {
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statuses = append(statuses, status)
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return nil
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}); err != nil {
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t.Fatal(err)
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}
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if len(statuses) != 2 || statuses[0] != StatusVerifying || statuses[1] != StatusSwitching {
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t.Fatalf("statuses = %v, want verifying then switching", statuses)
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}
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if _, err := os.Stat(filepath.Join(root, "config", "next.db")); err != nil {
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t.Fatal(err)
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}
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}
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