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PrivateObject.Invoke Method (String, BindingFlags, array<Type[], array<Object[], CultureInfo, array<Type )

  • Article

Used to access generic members of a private object.

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

Syntax

'Declaration
Public Function Invoke ( _
    name As String, _
    bindingFlags As BindingFlags, _
    parameterTypes As Type(), _
    args As Object(), _
    culture As CultureInfo, _
    typeArguments As Type() _
) As Object

public Object Invoke(
    string name,
    BindingFlags bindingFlags,
    Type[] parameterTypes,
    Object[] args,
    CultureInfo culture,
    Type[] typeArguments
)

public:
Object^ Invoke(
    String^ name, 
    BindingFlags bindingFlags, 
    array<Type^>^ parameterTypes, 
    array<Object^>^ args, 
    CultureInfo^ culture, 
    array<Type^>^ typeArguments
)

member Invoke : 
        name:string * 
        bindingFlags:BindingFlags * 
        parameterTypes:Type[] * 
        args:Object[] * 
        culture:CultureInfo * 
        typeArguments:Type[] -> Object 

public function Invoke(
    name : String, 
    bindingFlags : BindingFlags, 
    parameterTypes : Type[], 
    args : Object[], 
    culture : CultureInfo, 
    typeArguments : Type[]
) : Object

Parameters

  • parameterTypes
    Type: array<System.Type[]
    An array of Type objects that represents the number, order, and type of the parameters for the method to access.
    -or-
    An empty array of the type Type (that is, Type[] types = new Type[0]) to get a method that takes no parameters.
  • args
    Type: array<System.Object[]
    Any arguments that the member requires.
  • culture
    Type: System.Globalization.CultureInfo
    The CultureInfo object that represents the globalization locale to use, which might be necessary for locale-specific conversions, such as converting a numeric String to a Double.
    -or-
    nulla null reference (Nothing in Visual Basic) to use the current thread's CultureInfo.
  • typeArguments
    Type: array<System.Type[]
    An array of type arguments to use when invoking a generic method.

Return Value

Type: System.Object

Examples

The following code is in the application that you are testing. It contains a generic method that you want to test, TestThisMethod<T>.

internal class Customer
{
    internal T TestThisMethod<T>(T value)
    {
        return (value);
    }

    public Customer()
    {
    }
}

The following code is a test method in your unit test. It shows how to pass a type argument, in the final Type[] parameter, when it invokes the method that you are testing:

[TestMethod]
public void TestSetCustomerId()
{
    PrivateObject po = new PrivateObject(typeof(Customer));

    int id = 100;

    int actual = (int)po.Invoke("TestThisMethod", new Type[] { typeof(int) }, new Object[] { id }, new Type[] { typeof(int) });

    Assert.AreEqual(actual, id);
}

.NET Framework Security

See Also

Reference

PrivateObject Class

Invoke Overload

Microsoft.VisualStudio.TestTools.UnitTesting Namespace