static TextWriter Wrap(TextWriter w, int indent = 2, int pageWidth = 80)
{
var wrap = new ActionTextWriter(line =>
{
var words = Regex.Split(line, @"\s+");
int pos = 0;
bool first = true;
foreach (var word in words)
{
if (first)
{
first = false;
}
else if (pos == 0)
{
w.Write(new string(' ', indent));
pos = indent;
}
w.Write(word); w.Write(' ');
pos += word.Length + 1;
if (pos > pageWidth)
{
w.WriteLine();
pos = 0;
}
}
if (pos != 0)
{
w.WriteLine();
}
});
return(wrap);
}
public void WriteGivenStringPerformsActionManyTimes()
{
string[] originals = { "First", "Second", "Third" };
var expected = string.Join(Environment.NewLine, originals);
var actual = string.Empty;
var actionTextWriter = new ActionTextWriter(value => actual += value);
foreach (var original in originals)
{
actionTextWriter.WriteLine(original);
}
Assert.AreEqual(expected + Environment.NewLine, actual);
}
