Ok, I've got a strange problem. I am testing a usercontrol and have code like this:

```
[TestFixture]
public myTestClass : UserControl
{
    MyControl m_Control;

    [Test]
    public void TestMyControl()
    {
        m_Control = new MyControl();
        this.Controls.Add(m_Control);

        Assert.That(/*SomethingOrOther*/)
    }
}

```

This works fine, but when I change it to:

```
[TestFixture]
public myTestClass : UserControl
{
    MyControl m_Control;

    [Setup]
    public void Setup()
    {
        m_Control = new MyControl();
        this.Controls.Add(m_Control);
    }

    [TearDown]
    public void TearDown()
    {
        this.Controls.Clear();
    }

    [Test]
    public void TestMyControl()
    {
        Assert.That(/*SomethingOrOther*/);
    }
}

```

I get an Object Reference Not Set To An Instance of an Object. I even output to the console to ensure that the setup/teardown were running at the correct times, and they were... but still it isn't newing up the usercontrols.

edit> The exact code is:

```
[TestFixture]
public class MoneyBoxTests : UserControl
{
    private MoneyBox m_MoneyBox;
    private TextBox m_TextBox;

    #region "Setup/TearDown"
    [SetUp]
    public void Setup()
    {
        MoneyBox m_MoneyBox = new MoneyBox();
        TextBox m_TextBox = new TextBox();

        this.Controls.Add(m_MoneyBox);
        this.Controls.Add(m_TextBox);
    }

    [TearDown]
    public void TearDown()
    {
        this.Controls.Clear();
    }
    #endregion

    [Test]
    public void AmountConvertsToDollarsOnLeave()
    {
        m_MoneyBox.Focus();
        m_MoneyBox.Text = "100";
        m_TextBox.Focus();

        Assert.That(m_MoneyBox.Text, Is.EqualTo("$100.00"), "Text isn't $100.00");
    }

    [Test]
    public void AmountStaysANumberAfterConvertToDollars()
    {
        m_MoneyBox.Focus();
        m_MoneyBox.Text = "100";
        m_TextBox.Focus();

        Assert.That(m_MoneyBox.Amount, Is.EqualTo(100), "Amount isn't 100");
    }
}

```

I get the exception(s) at the respective m\_MoneyBox.Focus() calls.

Solved - See Joseph's comments