public void Dev2Dialogue_NullTitleDescriptionDescriptionTitleText_ValidImageSource_Expected_ValidImage()
{
IDialogueViewModel dev2Dialogue = new DialogueViewModel();
string newFileName = _filePath.Replace(".png", "Dev2Dialogue_NullTitleDescriptionDescriptionTitleText_ValidImageSource_Expected_ValidImage.png");
createFile(newFileName);
dev2Dialogue.SetupDialogue("Test Title", null, newFileName, null);
File.Delete(newFileName);
Assert.IsNotNull(dev2Dialogue.ImageSource);
// cleanup - Dispose of the dev2Dialogue
dev2Dialogue.Dispose();
}