ObjectState Class

Typemock Isolator Developer Guide

Utility Class that takes a snapshot of all the fields of an object or the static fields of a type , in order to reset all the fields back to the saved state.

Inheritance Hierarchy

SystemObject
TypeMockObjectState

Namespace: TypeMock
Assembly: TypeMock (in TypeMock.dll) Version: 9.3.8.0 (9.3.8.0)

Syntax

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public class ObjectState

Public Class ObjectState

The ObjectState type exposes the following members.

Constructors

	Name	Description
	ObjectState(Object)	Take a snapshot of all the fields of an object, in order to reset all the fields back to the saved state.
	ObjectState(Type)	Take a snapshot of all the static fields of a type, in order to reset all the fields back to the saved state.

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Methods

	Name	Description
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetField(String)	Gets the value of a non-public field (member variable) of the managed type.
	GetField(Object, String)	Gets the value of a non-public field (member variable) of an instance.
	GetField(Type, String)	Gets the value of a non-public static field (member variable) of a type.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ResetState	Reset the fields back to their original state
	SetField(String, Object)	Sets the value of a non-public field (member variable) of the managed type.
	SetField(Object, String, Object)	Sets the value of a non-public field (member variable) of an instance.
	SetField(Type, String, Object)	Sets the value of a non-public static field (member variable) of a type.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Remarks

The ObjectState assists testing classes with hidden field, by resetting these field when required

Examples

The following example we want to test a class that has a static counter.

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public class StatefulClass
{
    static private int count = 0;
    public int Count {get { return count++ ;}}
}

[Test]
public void Stateful()
{
    StatefulClass stateful = new StatefulClass();
    // Save our state
    ObjectState objState = new ObjectState(state);
    // Do something to change the state
       Assert.AreEqual(0,stateful.Count);
       // lets reset our code for next test
       objState.ResetState();
       Assert.AreEqual(0,stateful.Count);
   }

Public Class StatefulClass
    Private Shared count As Integer = 0
    Public ReadOnly Property Count() As Integer
        Get
            Return _defaultName
        End Get
    End Property
 End Class

<Test()> _
Public Sub Stateful()
    Dim stateful As StatefulClass = New StatefulClass
    ' Save our state
    Dim objState As ObjectState = New ObjectState(state)
    ' Do something to change the state
       Assert.AreEqual(0,stateful.Count)
       ' lets reset our code for next test
       objState.ResetState()
       Assert.AreEqual(0,stateful.Count)
   End Sub

Reference

TypeMock Namespace