Function downsample_reduces_points

nodedb/src/engine/timeseries/query.rs:282–296

()

    #[test]
    fn downsample_reduces_points() {
        let dir = TempDir::new().unwrap();
        let (idx, registry) = setup_test_data(&dir);
        let l1_dir = dir.path().join("l1");

        let engine = TimeseriesQueryEngine::new(&idx, &l1_dir, &registry);

        let full = engine.scan_metrics(1, &TimeRange::new(0, 20000)).unwrap();
        let downsampled = engine
            .downsample_metrics(1, &TimeRange::new(0, 20000), 5000)
            .unwrap();

        assert!(downsampled.len() < full.len());
        assert!(!downsampled.is_empty());
    }

    #[test]
    fn empty_series_returns_empty() {