I'm new to using Testing Tools on the .NET Framework, so I downloaded it from NuGet with help from ReSharper.
I am using this Quick Start to learn how to use nUnit. I had just copied the code and an error came up on this attribute:
[ExpectedException(typeof(InsufficientFundsException))] //it is user defined Exception
The error is:
The type or namespace name 'ExpectedException' could not be found (are you missing a using directive or an assembly reference?)
Why? And if I need such functionality, what should I replace it with?
If you're using NUnit 3.0, then your error is because the ExpectedExceptionAttribute
has been removed. You should instead use a construct like the Throws Constraint.
For example, the tutorial you linked has this test:
[Test]
[ExpectedException(typeof(InsufficientFundsException))]
public void TransferWithInsufficientFunds()
{
Account source = new Account();
source.Deposit(200m);
Account destination = new Account();
destination.Deposit(150m);
source.TransferFunds(destination, 300m);
}
To change this to work under NUnit 3.0, change it to the following:
[Test]
public void TransferWithInsufficientFunds()
{
Account source = new Account();
source.Deposit(200m);
Account destination = new Account();
destination.Deposit(150m);
Assert.That(() => source.TransferFunds(destination, 300m),
Throws.TypeOf<InsufficientFundsException>());
}