public void AutomaticUsage()
{
var hf = new HelpFormatter();
String expected = "usage: app [-a]";
var output = new MemoryStream();
var pw = new StreamWriter(output);
Options options = new Options().AddOption("a", false, "aaaa aaaa aaaa aaaa aaaa");
hf.PrintUsage(options, new HelpSettings {
Width = 60, CommandLineSyntax = "app"
}, pw);
pw.Flush();
Assert.AreEqual(expected, Encoding.UTF8.GetString(output.ToArray()).Trim(), "simple auto usage");
output = new MemoryStream();
pw = new StreamWriter(output);
expected = "usage: app [-a] [-b]";
options = new Options().AddOption("a", false, "aaaa aaaa aaaa aaaa aaaa").AddOption("b", false, "bbb");
hf.PrintUsage(options, new HelpSettings {
CommandLineSyntax = "app", Width = 60
}, pw);
pw.Flush();
Assert.AreEqual(expected, Encoding.UTF8.GetString(output.ToArray()).Trim(), "simple auto usage");
}
public void PrintSortedUsageWithNullComparer()
{
Options opts = new Options();
opts.AddOption(new Option("a", "first"));
opts.AddOption(new Option("b", "second"));
opts.AddOption(new Option("c", "third"));
HelpFormatter helpFormatter = new HelpFormatter();
StringWriter output = new StringWriter();
helpFormatter.PrintUsage(opts, new HelpSettings {
Width = 80, CommandLineSyntax = "app", OptionComparer = null
}, output);
Assert.AreEqual("usage: app [-a] [-b] [-c]" + Eol, output.ToString());
}
public void PrintUsage()
{
var optionA = new Option("a", "first");
var optionB = new Option("b", "second");
var optionC = new Option("c", "third");
var opts = new Options();
opts.AddOption(optionA);
opts.AddOption(optionB);
opts.AddOption(optionC);
var helpFormatter = new HelpFormatter();
var bytesOut = new MemoryStream();
var printWriter = new StreamWriter(bytesOut);
helpFormatter.PrintUsage(opts, new HelpSettings {
Width = 80, CommandLineSyntax = "app"
}, printWriter);
printWriter.Close();
Assert.AreEqual("usage: app [-a] [-b] [-c]" + Eol, Encoding.UTF8.GetString(bytesOut.ToArray()));
}
public void PrintOptionWithEmptyArgNameUsage()
{
Option option = new Option("f", true, null);
option.ArgumentName = "";
option.IsRequired = true;
Options options = new Options();
options.AddOption(option);
StringWriter output = new StringWriter();
HelpFormatter formatter = new HelpFormatter();
formatter.PrintUsage(options, new HelpSettings {
ArgumentName = null, CommandLineSyntax = "app", Width = 80
}, output);
Assert.AreEqual("usage: app -f" + Eol, output.ToString());
}
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());
}