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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today. # working on unit testing - what should I be doing here? I made an attempt but feel I am missing the point

it says to call the OnMap method. I think I tried that did I do this in the right file?

Map.cs
```namespace TreehouseDefense
{
public class Map
{

public Map(int width, int height)
{
if(width < 1 || height < 1)
{
throw new System.ArgumentOutOfRangeException(
"Map must be at least 1x1");
}

Width = width;
Height = height;
}

public bool OnMap(Point point)
{
return point.X >= 0 && point.X < Width &&
point.Y >= 0 && point.Y < Height;
}
}
}
```
MapTests.cs
```using Xunit;

namespace TreehouseDefense.Tests
{
public class MapTests
{
[Fact]
public void OnMapTest()
{
OnMap();
Assert.True(false, "This test needs an implementation");
Assert.True(true, "This test is true");

}
}
}
```
Point.cs
```using System;

namespace TreehouseDefense
{
public class Point
{

public Point(int x, int y)
{
X = x;
Y = y;
}

public double DistanceTo(Point point)
{
return Math.Sqrt(Math.Pow(X - point.X, 2.0) + Math.Pow(Y - point.Y, 2.0));
}
}
}
``` You then need to use the `Assert.True` method. That method takes a boolean (true or false) as the first argument, if the boolean is true it will pass the test, if it is false then the test will fail.