public void PrintOptionGroupUsage()
{
OptionGroup group = new OptionGroup();
group.AddOption(OptionBuilder.New().Create("a"));
group.AddOption(OptionBuilder.New().Create("b"));
group.AddOption(OptionBuilder.New().Create("c"));
Options options = new Options();
options.AddOptionGroup(group);
StringWriter output = new StringWriter();
HelpFormatter formatter = new HelpFormatter();
formatter.PrintUsage(options, new HelpSettings {
Width = 80, CommandLineSyntax = "app"
}, output);
Assert.AreEqual("usage: app [-a | -b | -c]" + Eol, output.ToString());
}
