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ExpectedExceptionAttribute Constructor (Type, String)

Visual Studio 2012

Initializes a new instance of the ExpectedExceptionAttribute class with and expected exception type and a message that describes the exception.

Namespace: Microsoft.VisualStudio.TestTools.UnitTesting
Assembly: Microsoft.VisualStudio.QualityTools.UnitTestFramework (in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)

Syntax

C++

JScript

public ExpectedExceptionAttribute(
	Type exceptionType,
	string noExceptionMessage
)

Parameters

exceptionType: Type: Type
An expected type of exception to be thrown by a method.

noExceptionMessage: Type: String

Remarks

If exceptionType or message is null, a diagnostic message will be sent to a trace listener.

Examples

The following class contains the method to test:

using System;

namespace MyCSNamespace
{
    public class DivisionClass
    {
        public int Divide(int numerator, int denominator)
        {
            return numerator / denominator;
        }
    }
}

The following test method tests the Divide method of the DivisionClass object. It tests for the existence of a DivideByZeroException.

using Microsoft.VisualStudio.TestTools.UnitTesting;
using MyCSNamespace;

namespace MyCSTestProject
{
    [TestClass()]
    public class DivisionClassTest
    {
        [TestMethod()]
        [ExpectedException(typeof(System.DivideByZeroException), "MyMessage")]
        public void DivideTest()
        {
            DivisionClass target = new DivisionClass();
            int numerator = 4;
            int denominator = 0;
            int actual;
            actual = target.Divide(numerator, denominator);
        }
    }
}

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Reference

ExpectedExceptionAttribute Class

ExpectedExceptionAttribute Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace

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