public void UserMessageService_ShouldInvoke()
{
//Arrange
var testMessage = new UserMessage
{
SenderName = "SenderName",
RecieverName = "RecieverName",
SenderEmail = "SenderEmail",
RecieverEmail = "RecieverEmail",
Subject = "Subject",
Text = "TestMessage"
};
var testMessageService = new Mock <IMessageService>();
var testClass = new TestMessage(testMessageService.Object);
//Act
testClass.SendMessage(testMessage);
//Assert
testMessageService.Verify(ms => ms.MessageToUser(testMessage), Times.AtLeastOnce);
}