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NdArray.Test.cs
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131 lines (104 loc) · 3.47 KB
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using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Collections.Generic;
using System.Text;
using NumSharp.Extensions;
using System.Linq;
namespace NumSharp.UnitTest
{
[TestClass]
public class NDArrayTest
{
[TestMethod]
public void IndexAccessorGetter()
{
var np = new NumPy<int>();
var n = np.arange(12).reshape(3, 4);
Assert.IsTrue(n[1, 1] == 5);
Assert.IsTrue(n[2, 0] == 8);
n = np.arange(12).reshape(2, 3, 2);
var n1 = n.Vector(1);
Assert.IsTrue(n1[1, 1] == 9);
Assert.IsTrue(n1[2, 1] == 11);
var n2 = n.Vector(1, 2);
Assert.IsTrue(n2[0] == 10);
Assert.IsTrue(n2[1] == 11);
}
[TestMethod]
public void IndexAccessorSetter()
{
var np = new NumPy<int>();
var n = np.arange(12).reshape(3, 4);
Assert.IsTrue(n[0, 3] == 3);
Assert.IsTrue(n[1, 3] == 7);
// set value
n.Vector(new Shape(0), 10);
Assert.IsTrue(n[0, 0] == 10);
Assert.IsTrue(n[0, 3] == 10);
Assert.IsTrue(n[1, 3] == 7);
}
[TestMethod]
public void StringCheck()
{
var np = new NDArray<double>().ARange(9).ReShape(3,3);
var random = new Random();
np.Data = np.Data.Select(x => x + random.NextDouble()).ToArray();
np.Data[1] = 1;
np.Data[2] -= 4;
np.Data[3] -= 20;
np.Data[8] += 23;
var stringOfNp = np.ToString();
Assert.IsTrue(stringOfNp.Contains("[[ 0."));
np = new NDArray<double>().ARange(9).ReShape(3,3);
stringOfNp = np.ToString();
Assert.IsTrue(stringOfNp.Contains("([[ 0,"));
}
[TestMethod]
public void DimOrder()
{
NDArray<double> np1 = new NDArray<double>().Zeros(2,2);
np1[0,0] = 0;
np1[1,0] = 10;
np1[0,1] = 1;
np1[1,1] = 11;
// columns first than rows
Assert.IsTrue(Enumerable.SequenceEqual(new double[] {0,1,10,11}, np1.Data ));
}
[TestMethod]
public void ToDotNetArray1D()
{
var np1 = new NDArray<double>().ARange(9);
double[] np1_ = np1.ToDotNetArray<double[]>();
Assert.IsTrue(Enumerable.SequenceEqual(np1_,np1.Data));
}
[TestMethod]
public void ToDotNetArray2D()
{
var np1 = new NDArray<double>().ARange(9).ReShape(3,3);
double[][] np1_ = np1.ToDotNetArray<double[][]>();
for (int idx = 0; idx < 3; idx ++)
{
for (int jdx = 0; jdx < 3; jdx ++)
{
Assert.IsTrue(np1[idx,jdx] == np1_[idx][jdx]);
}
}
}
[TestMethod]
public void ToDotNetArray3D()
{
var np1 = new NDArray<double>().ARange(27).ReShape(3,3,3);
double[][][] np1_ = np1.ToDotNetArray<double[][][]>();
for (int idx = 0; idx < 3; idx ++)
{
for (int jdx = 0; jdx < 3; jdx ++)
{
for (int kdx = 0; kdx < 3;kdx++)
{
Assert.IsTrue(np1[idx,jdx,kdx] == np1_[idx][jdx][kdx]);
}
}
}
}
}
}