#[test]
fn test_float_statistics_nan_middle() {
    let stats = statistics_roundtrip::<FloatType>(&[1.0, f32::NAN, 2.0]);
    assert!(stats.has_min_max_set());
    if let Statistics::Float(stats) = stats {
        assert_eq!(stats.min(), &1.0);
        assert_eq!(stats.max(), &2.0);
    } else {
        panic!("expecting Statistics::Float");
    }
}

#[test]
fn test_float_statistics_nan_start() {
    let stats = statistics_roundtrip::<FloatType>(&[f32::NAN, 1.0, 2.0]);
    assert!(stats.has_min_max_set());
    if let Statistics::Float(stats) = stats {
        assert_eq!(stats.min(), &1.0);
        assert_eq!(stats.max(), &2.0);
    } else {
        panic!("expecting Statistics::Float");
    }
}

#[test]
fn test_float_statistics_nan_only() {
    let stats = statistics_roundtrip::<FloatType>(&[f32::NAN, f32::NAN]);
    assert!(!stats.has_min_max_set());
    assert!(matches!(stats, Statistics::Float(_)));
}

fn statistics_roundtrip<T: DataType>(values: &[<T as DataType>::T]) -> Statistics {
    let page_writer = get_test_page_writer();
    let props = Arc::new(WriterProperties::builder().build());
    let mut writer = get_test_column_writer::<T>(page_writer, 0, 0, props);
    writer.write_batch(values, None, None).unwrap();

    let (_bytes_written, _rows_written, metadata) = writer.close().unwrap();
    if let Some(stats) = metadata.statistics() {
        stats.clone()
    } else {
        panic!("metadata missing statistics");
    }
}