Initializes a new instance of the ExpectedExceptionAttribute class with and expected exception type and a message that describes the exception.
(in Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll)
Visual Basic (Declaration)
Public Sub New ( _
exceptionType As Type, _
message As String _
)
Dim exceptionType As Type
Dim message As String
Dim instance As New ExpectedExceptionAttribute(exceptionType, _
message)
public ExpectedExceptionAttribute(
Type exceptionType,
string message
)
public:
ExpectedExceptionAttribute(
Type^ exceptionType,
String^ message
)
public function ExpectedExceptionAttribute(
exceptionType : Type,
message : String
)
Parameters
- exceptionType
- Type: System..::.Type
An expected type of exception to be thrown by a method.
- message
- Type: System..::.String
A message to be attached to the exception.
If exceptionType or message is nullNothingnullptra null reference (Nothing in Visual Basic), a diagnostic message will be sent to a trace listener.
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;
}
}
}
Public Class DivisionClass
Public Function Divide(ByVal numerator As Integer, ByVal denominator As Integer) As Integer
Return numerator \ denominator
End Function
End Class
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);
}
}
}
Imports Microsoft.VisualStudio.TestTools.UnitTesting
Imports MyVBProject
<TestClass()> _
Public Class DivisionClassTest
<TestMethod()> _
<ExpectedException(GetType(System.DivideByZeroException), "MyMessage")> _
Public Sub DivideTest()
Dim target As DivisionClass = New DivisionClass
Dim numerator As Integer = 4
Dim denominator As Integer = 0
Dim actual As Integer
actual = target.Divide(numerator, denominator)
End Sub
End Class
Reference