Function TestDB_Checkpoint_ErrorMetrics

db_internal_test.go:510–553

TestDB_Checkpoint_ErrorMetrics verifies that checkpoint error counter is incremented on failure.

(t *testing.T)

// TestDB_Checkpoint_ErrorMetrics verifies that checkpoint error counter is incremented on failure.
func TestDB_Checkpoint_ErrorMetrics(t *testing.T) {
	dir := t.TempDir()
	dbPath := filepath.Join(dir, "db")

	db := NewDB(dbPath)
	db.MonitorInterval = 0
	db.Replica = NewReplica(db)
	db.Replica.Client = &testReplicaClient{dir: t.TempDir()}
	db.Replica.MonitorEnabled = false
	if err := db.Open(); err != nil {
		t.Fatal(err)
	}
	defer func() { _ = db.Close(context.Background()) }()

	sqldb, err := sql.Open("sqlite", dbPath)
	if err != nil {
		t.Fatal(err)
	}
	defer sqldb.Close()

	if _, err := sqldb.Exec(`CREATE TABLE t (id INT, data TEXT)`); err != nil {
		t.Fatal(err)
	}
	if _, err := sqldb.Exec(`INSERT INTO t VALUES (1, 'test data')`); err != nil {
		t.Fatal(err)
	}

	if err := db.Sync(context.Background()); err != nil {
		t.Fatal(err)
	}

	baselineErrors := testutil.ToFloat64(checkpointErrorNCounterVec.WithLabelValues(db.Path(), "PASSIVE"))

	db.db.Close()

	if err := db.execCheckpoint(context.Background(), "PASSIVE"); err == nil {
		t.Fatal("expected error from checkpoint with closed db")
	}

	checkpointErrorValue := testutil.ToFloat64(checkpointErrorNCounterVec.WithLabelValues(db.Path(), "PASSIVE"))
	if checkpointErrorValue <= baselineErrors {
		t.Fatalf("litestream_checkpoint_error_count=%v, want > %v", checkpointErrorValue, baselineErrors)
	}
}

// TestDB_L0RetentionMetrics verifies that L0 retention gauges are set during enforcement.
func TestDB_L0RetentionMetrics(t *testing.T) {