public void Case1_Axis_minus1()
{
var a = np.ones((3, 3, 3), NPTypeCode.Int32);
var ret = a.sum(-1);
ret.Shape.IsScalar.Should().BeFalse();
ret.size.Should().Be(9);
FluentExtension.Should(ret.Shape).Be(new Shape(3, 3));
ret.Cast <int>().Should().AllBeEquivalentTo(3);
}
public void Case2_Axis_minus1_keepdims()
{
var a = np.ones((2, 1, 3, 5, 1), np.int32);
var ret = a.sum(-1, keepdims: true);
ret.Shape.IsScalar.Should().BeFalse();
ret.size.Should().Be(30);
FluentExtension.Should(ret.Shape).Be(new Shape(2, 1, 3, 5, 1));
ret.Cast <int>().Should().AllBeEquivalentTo(1);
}
public void Case2_Axis2()
{
var a = np.ones((2, 1, 3, 5, 1), np.int32);
var ret = a.sum(2);
ret.Shape.IsScalar.Should().BeFalse();
ret.size.Should().Be(10);
FluentExtension.Should(ret.Shape).Be(new Shape(2, 1, 5, 1));
ret.Cast <int>().Should().AllBeEquivalentTo(3);
}
public void Case3_TurnIntoScalar()
{
NDArray a;
NDArray ret;
// >>> a = np.array(5)
// >>> print(np.prod(a))
// >>> print(np.prod(a).shape)
// 5
// ()
a = np.array(5);
ret = np.prod(a);
FluentExtension.Should(ret).BeScalar(5);
ret = np.sum(a);
FluentExtension.Should(ret).BeScalar(5);
}