public void HasHelpText()
{
Assert.DoesNotThrow(() =>
{
var x = new HelpEvaluator("", Substitute.For <IMessageManager>()).Help;
});
}
public void FewerThanOneParameterFails()
{
var messages = Substitute.For <IMessageManager>();
var helpEvaluator = new HelpEvaluator("", messages);
Assert.Throws <Exception>(() => helpEvaluator.Execute());
}
public void WritesHelpMessage()
{
var messages = Substitute.For <IMessageManager>();
var helpEvaluator = new HelpEvaluator("", messages);
var evaluatorWithHelpMessage = Substitute.For <IEvaluator>();
evaluatorWithHelpMessage.Help.Returns(new HelpText("", ""));
evaluatorWithHelpMessage.Body.Returns(a => null);
evaluatorWithHelpMessage.Next.Returns(a => null);
helpEvaluator.Body = evaluatorWithHelpMessage;
helpEvaluator.Execute();
messages.Received(1).AddMessage(MessageType.Information, Arg.Any <string>());
}
public void MoreThanOneParameterFails()
{
var messages = Substitute.For <IMessageManager>();
var helpEvaluator = new HelpEvaluator("", messages);
var firstParameter = Substitute.For <IEvaluator>();
var secondParameter = Substitute.For <IEvaluator>();
firstParameter.Body.Returns(a => null);
firstParameter.Next.Returns(a => secondParameter);
secondParameter.Body.Returns(a => null);
secondParameter.Next.Returns(a => null);
helpEvaluator.Body = firstParameter;
Assert.Throws <Exception>(() => helpEvaluator.Execute());
}