def test_downsample():
dm = DataMatrix(length=2)
dm.series = SeriesColumn(depth=10)
dm.series[0] = range(10)
dm.series[1] = [0, 1] * 5
dm.d3 = series.downsample(dm.series, 3)
dm.d5 = series.downsample(dm.series, 5)
check_series(dm.d3, [[1, 4, 7], [1. / 3, 2. / 3, 1. / 3]])
check_series(dm.d5, [[2, 7], [.4, .6]])
check_integrity(dm)
