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Help to solve unit test task 1

Hello i have been looking on this task for a while now, and have no clue on how to solve it is there any solution for this task?

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()
{
Assert.True(false, "This test needs an implementation");
}
}
}
```
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));
}
}
}
```

STAFF

Sam,

Just for reference, here are the instructions for the code challenge:

"Fill out MapTests.OnMapTest to test that Map.OnMap returns true when passed a point that is on the map."

To start, think about what you need to do in order to successfully call the `Map.OnMap` method. Do you need to instantiate an instance of the Map class? What do you need to pass to the `OnMap` method?

Once you have the code written to call the `Map.OnMap` method, then think about the property values that the Map and Point objects need to have in order for the `OnMap` method to return a value of `true`. Then, once you have the `OnMap` method returning a value of `true`, you can use the `Assert.True` method to validate that the `OnMap` method's return value is in fact the expected value of `true`.

I hope this helps :)

Thanks ~James

I have compile errors with my submission even with the downloaded solution, So I'm not even going to move forward with this track.

It helped me to think about it from Assert to Arrange. Assert-

```Assert.True(result);
```

The result parameter of the assertion (Assert.True) comes from the method tested in Act-

```var result = mapInstance.OnMap(parameter);
```

The mapInstance is instantiated in Arrange. The parameter of the OnMap method is initialized in Arrange-

```//1) use the new keyword to instantiate Map
Map yourMap = new Map(yourMapWidth, yourMapHeight);

//2) initialize x and y for yourPoint

//3) instantiate yourPoint using x and y just like you instantiated yourMap
```

Of course, your code must follow the order Arrange, Act, then Assert. Ask yourself what the method's signature is (it's name and what type of parameter or parameters it takes) and what it returns. That is why the Map and Point class are so helpful.