Hello,

I am trying to test an activity with variable but have not been able to.  Please point me to any sample you may have on this.

My test code:

 [TestMethod()]
    public void DataProcessTest()
    {
      MyActivity activity = new MyActivity();      
      var host = WorkflowInvokerTest.Create(activity);
      
      var input = InputDictionary.Create("value1", 1);
 
      try
      {
        // Act
        host.TestActivity(input);       
 
        // Assert
        // Note: The host automatically captures the out arguments
        host.AssertOutArgument.AreEqual("MyVariable", false);
      }
      finally
      {
        // Note: The host automatically captures tracking
        host.Tracking.Trace();
      }
 
    }

My activity executes fine until it gets to this line of code:

PropertyDescriptor myProperty = context.DataContext.GetProperties()["MyVariable"];

myProperty.SetValue(context.DataContext, true);

I got an Object reference not set to an instance of an object.  It is saying myProperty is null.  How do I include this property as an argument to the workflow host?

THank you in advance for your help.

Does "value1" need to be "MyVariable"?

Looks to me like the "MyVariable" is not an OutArgument at all.

What does ' host.OutArguments.MyVariable' look like?

Maybe:

 [TestMethod()]
    public void DataProcessTest()
    {
      MyActivity activity = new MyActivity();      
      var host = WorkflowInvokerTest.Create(activity);
      
      var input = InputDictionary.Create("value1", 1);

      try
      {
        // Act
        host.TestActivity(input);       

        // Assert
        // Note: The host automatically captures the out arguments
        host.AssertOutArgument.AreEqual("value1", false);        
      }
      finally
      {
        // Note: The host automatically captures tracking
        host.Tracking.Trace();
      }

    }