public void TestFromColumns()
{
var a = new float[] { 10, 20, 30 };
var b = new float[] { 40, 50, 60, 70 };
var result = DataSourceFactory.FromColumns(new float[][] { a, b });
Assert.AreEqual(2, result.Shape.Rank);
Assert.AreEqual(4, result.Shape.Dimensions[0]);
Assert.AreEqual(2, result.Shape.Dimensions[1]);
Assert.AreEqual(0.0, result[3, 0]);
Assert.AreEqual(60.0, result[2, 1]);
}